SemiNex Feature LIDAR Article Published in Laser Focus World Magazine


For the first time, a thorough study of laser eye safety between 1550nm and 905nm and its performance benchmark in automotive LiDAR was reported by SemiNex Corporation and prominently published in Laser Focus World Magazine. The analysis compares the newly developed 1550nm triple junction laser diode and 905nm on key performance inputs including the eye safety levels, photon budget over the detection range, target reflectivity, and atmospheric media. The LiDAR system model with typical system parameters is then benchmarked based on the signal-to-noise ratio and probability of detection with potentially industry-transforming results.

The study demonstrates that a high-power laser diode with triple junction at eye-safe 1550nm can generate 50 times more photons per second and detect 3 times longer distance than their 905nm counterpart in a controlled head-to-head comparison. This breakthrough in 1550nm diode lasers by SemiNex allows the LiDAR industry to look beyond 200m of detection distance with a single low-cost emitter and opens up a whole array of long-range applications including high-speed autonomous vehicles. 

The benchmark study is featured in the November issue of Laser Focus World Magazine and available online at Details on the triple junction laser diodes is available at  For more information and product availability, contact

SemiNex Showcase Innovations at CIOE 2021


SemiNex Corporation will be at CIOE (The 23rd China International Optoelectronic Exposition) in Shenzhen from September 16th to 18th to connect with regional customers and support new applications. Innovations of high power laser diodes from 1250nm to 1940nm for LiDAR, military, medical, and industrial applications will be showcased. 

Highlights at CIOE will include:

  • 1550nm Triple Junction laser diode for long range LiDAR and rangefinders: Patent-pending multi-junction semiconductor laser diode at eye-safe wavelengths can generate 80 times more photons than 905nm from a LiDAR emitter, and achieve 3 times longer in detection distance and 24 times higher in detection capability. 

  • 1940nm Gallium Antimonide (GaSb) laser diode: SemiNex high power GaSb laser diodes provide 50% more power than comparable diode lasers in the market today for medical, material processing, and sensing applications.
  • 1450nm Laser Engines for home consumer cosmetics: This is a cost-effective solution for wrinkle removal and skin rejuvenation. Its small form factor and powerful light output allows home-use solutions in a hand-held design.
  • Laser diodes and packages: SemiNex provides varieties of laser wavelength, aperture size, cavity length, and packaging for engineering design freedom. Package options include chip-on-carrier, B/C mounts, TO cans with FAC (Fast-Axis Collimating) lens, and various fiber modules and systems. 

“We are excited to participate in CIOE and showcase our broad portfolio with best-in-class products.” says Mr. David Bean, the CEO and Founder of SemiNex. “Our local office in northern China (Liaoning) provides timely product and application support for customers in China and Asia Pacific.”

“To learn more about our laser diode portfolio, visit our Booth 2T006 in Hall 2.” says Ms. Hanyu Yang, Sales and Applications Engineer at SemiNex. “I look forward to working with our customers on various projects and applications.”  She can also be reached at, Tel/WeChat: 15641953339.

SemiNex Welcomes Daniel Chu as VP of Marketing and Business Development

SemiNex welcomes Daniel Chu with the best laser diode technologies 

SemiNex is pleased to announce the hiring of Daniel Chu to drive business growth across the full SemiNex portfolio of high power InP and GaSb semiconductor lasers for LiDAR, medical, military, and industrial markets. Educated as a laser physicist from Northwestern University with a PhD degree, Daniel has extensive experience in product management, applications engineering, and business creation. Daniel’s career spans over 25 years in the laser and optics industry with tenures at world-known companies such as OSRAM and SDL Inc.   

Daniel brings his technical laser expertise and market experience to assist customers in developing best-in-class laser systems.  As an example, Daniel leads the SemiNex commercial team in supporting customers to pursue long-range LiDAR with patent-pending Triple Junction laser diodes. This new technology at eye-safe 1550nm allows LiDAR manufacturers to achieve 3 times the distance and 24 times the detection probability compared to a 905nm emitter. Daniel developed a benchmark calculator based on LiDAR physics to deliver the target performance for high speed autonomous vehicles and works directly with LIDAR customers to optimize their LIDAR designs for both performance and cost.  

“Daniel has a strong knowledge in semiconductor lasers and extensive experience in the photonics industry. He will deliver the highest level of technical support and service to our customers for design wins.” says Mr. David Bean, CEO and Founder of SemiNex Corporation.  

“It is such an exciting time to join SemiNex”, Daniel comments “as we not just have the most powerful 1550nm laser diode for ToF LiDAR, but also SOAs for FMCW LiDAR and GaSb 1940nm laser for medical and many other applications. We offer unparalleled performance that no others can.” Daniel continues “I look forward to working with our customers in designing in our best product offerings as cost effective solutions.”  

Besides working at the SemiNex office near Boston, Daniel will also work closely with customers in Asia Pacific, where SemiNex established a regional office in the Chinese city of Liaoyang in 2020. Besides English, Daniel speaks Mandarin fluently and understands Cantonese and Taiwanese well. To learn more about SemiNex capabilities and product offering, contact Daniel at +1 978-326-7702 and  

SemiNex Launches New 1900-2400nm Laser Diodes

Increases Power by More Than 50 Percent vs. Comparable Lasers on Market

Peabody, MA – Dec. 16th, 2020 – SemiNex announces its new Gallium Antimonide (GaSb) lasers in the 1900-2400nm range that provide 50% more power than comparable lasers on the market today. The new GaSb laser diodes achieve high power using a GaInAsSb/AlGaAsSb strained QW ridge waveguide technique grown by molecular beam epitaxy (MBE) on GaSb substrates. SemiNex’s 1940nm laser diode demonstrates high optical power of 1.5W and a low threshold current density of less than 100 A/cm2 at room temperature in continuous-wave (CW) conditions. GaSb laser diodes are prevalent in medical, material processing and gas sensing applications.

“The introduction of this new 1940nm laser diode will support our customers in the medical, material processing and gas sensing market with higher power diodes enabling smaller, more efficient, and more effective laser systems,” says Ed McIntyre, VP of Business Development at SemiNex.  

Medical Applications

Lasers at a 1900-2400nm wavelength play a crucial role in advanced medical procedures such as varicose veins, tonsillectomies and brain surgery.

In a varicose vein procedure, the laser light is absorbed in tissue at a precise target depth to close the vein from the inside quickly without pain. This allows for a shorter operation time with limited scarring.

In a tonsillectomy procedure, laser diodes with a 1940nm wavelength cut through the tissue with reduced pain and increased efficacy when compared to other methods such as electrocautery. 1940nm lasers have twice the absorption coefficient of a 1470nm laser and 100 times that of a 980nm laser; this helps to prevent the mass pooling of blood in procedures such as neurosurgery. In a brain procedure, 1940nm lasers are capable of vaporizing and coagulating tissue, helping to prevent further blood loss and speed up the repair of damaged tissue.      

In dentistry, GaSb lasers are used in place of radiographs to detect lesions on teeth which appear as pits and fissures, signs of early occlusal decay. This early find by the laser prevents the need for surgery.   

1940nm lasers have twice the absorption of 1470nm and 100 times the absorption of lasers in the 800-1000 nm range.

Material Processing

Lasers produced in the 2µm range find use in industrial applications such as the welding of transparent plastics. GaSb laser welders allow the welding of these plastics by focusing 1940nm light that is absorbed strongly by C-H bonds in the polymer. Many transparent plastics share similarities; these plastics can be absorbed adequately by laser light in the 1940-2400nm range permitting direct processing with the lasers. When compared to lasers operating at 1µm, absorption can only be accomplished through additives to the material resulting in a more complex process. Additional applications for material processing in the 1940nm range include the processing and fabrication of bio-fluidic chips, used for biological and medical mass-screening experiments.

“Our GaSb laser didoes in the 1900-2400nm range support businesses in medical, material processing, and gas sensing fields. We are excited to enable our medical systems customers to develop higher power systems that improve recovery times and minimize swelling and scarring with higher performance laser components. We also look forward to improving the performance in plastic welding and gas sensing applications by enabling higher powers and efficiency while reducing the system size and cost,” says David Bean, CEO of SemiNex Corporation.

Gas Sensing

Lasers with a 1900-2400nm spectral range can detect atmospheric gases such as H2O, CO2 and N2O. Ammonia can be detected through the laser system by exploiting the specific absorption of the gas at a determined wavelength. Backscattered light at this wavelength is compared with the level of returned light at another wavelength to confirm the presence of the gas of interest while eliminating other potential contaminants.

SemiNex GaSb laser diodes at 1940nm are available for immediate delivery as bare chips and in TO9-can packages. Other packages at 1940nm are available upon request with reasonable lead times. Customer wavelengths from 1900-2400nm are available upon request. For more information contact SemiNex or your nearest SemiNex distributor.

SemiNex Wins Silver Honoree at 2020 Laser Focus World Innovators Awards

Peabody, Mass. – October 28th, 2020 SemiNex has won silver honors in the Laser Focus World Innovators Awards through its new Triple Junction laser diode. The SemiNex 1550nm triple junction laser diode enables a 300 meter eye-safe range for LiDAR systems and provides more than 20 times the photons/second than similar LiDAR at 905nm. The triple junction is the best in its class with 3 times the peak power of other 1550nm diodes. It produces more than 80 watts with 1 watt per amp efficiency enabling automotive LiDAR systems to reach 300 meters, allowing for high speed autonomous travel. Devices are available as a bare chip for integration onto existing control boards, standard TO cans and easy integration into range finding applications.

SemiNex Opens New Office in Asia to Support Increasing Business in High Power Lasers

SemiNex Corporation unveils a new sales and application engineering office in Liaoyang, China to support customers with product selection, system integration, pricing and supply across the entirety of the Asian continent. SemiNex now directly supports new business in Asia for high power laser diodes spanning various industries including consumer devices, professional medical, industrial, military and telecommunications markets. Specifically, the fast-emerging LiDAR applications, including those used in autonomous vehicles, will now benefit from this direct support and the introduction of the new SemiNex Multi-Junction Laser with 300% the power of prior best-in-class lasers. The new multi-junction laser diode produces 80 watts at 1550nm with a 95um aperture width yielding more than 3X the power of current single junction laser diodes at this wavelength.

The Asia office will better support new applications and existing business in China, Korea, Japan, and across Asia. This allows SemiNex to showcase these products directly with the Asian consumer, whereas before, it was only possible to do so remotely, especially with limited travel due to COVID-19 restrictions. An increase in sales, customer satisfaction, and further expansion are already being experienced due to the opening of this new office. SemiNex recently presented its products at the CIOE trade show in Shenzen, China, which in normal years attracts over 89,000 professionals. During the show SemiNex supported dozens of applications and a myriad of customers with in-person meetings.

With the inauguration of this new workspace, SemiNex better responds to customer questions, such as product pricing, specifications, product selection assistance and supply inquires. This comes in a year of pandemic challenges, uncertainty and ever changing variables. Despite these circumstances, SemiNex continues conducting successful business throughout the Far East with increasing sales and support of its laser diodes.

The building, in which the new office is located, is a state of the art structure which recently finished construction. Its central location in Liaoyang allows for easy customer access and convenience, making it effortless to directly schedule in-person meetings, remote calls and web conferences during convenient Asia daily work times. Visitors to the new office will find it contains all the modern amenities one would expect in our present age, providing guests with a comfortable and pleasant experience during their visit. It will serve as a central hub for SemiNex China in the years to come.   

Applications Engineer Hanyu Yang is managing the new Chinese location. Her background includes a master’s degree in engineering from Northeastern University, USA and prior experience at leading medical device companies such as Becton Dickinson Medical. Ms. Yang’s cultural background, international experience and extensive language skills provide our Asian customers with exceptional service.

Ed McIntyre, Vice President of Sales, works closely with Ms. Yang and noted, “I’m very excited about having Hanyu in China to support our customers in real time to bridge the communications gap with direct and timely customer support. That can be very challenging when working on a new engineering project.”

The new office in the Far East has regular business hours from 9am to 5pm China Standard Time (UTC+8) and can be reached at +86 15641953339 / +86 (0419) 5850799,  WeChat 15641953339 or email at

SemiNex Multi-Junction Lasers Enable Inexpensive, Efficient, Long-Range LiDAR Applications

SemiNex Corporation announces the introduction of a patent-pending, multi-junction, semiconductor laser diode at eye-safe wavelengths between 1310nm and 1550nm with more than 20 times the photons/second and more than 3X the range compared to 905nm LiDAR systems which will enable mass-market auto-driving cars to finally become a reality. The multi-junction laser diode is a drop-in replacement for most compact laser drivers used for existing 9XXnm diode systems. The new SemiNex multi-junction laser diode makes use of 3 monolithic solid-state laser junctions that produce 80 watts at 1550nm with 95µm aperture width and yield more than 3X the power of current laser diodes at this wavelength. Product samples are available immediately and the multi-junction is ready for immediate high volume production.

Typical time-of-flight LiDAR systems using multi-junction 905nm lasers are limited to a range of 100 meters due to eye-safety acceptable emission limits (AEL) of International Electrotechnical Commission (IEC) regulations, thus limiting their use to niche applications such as private security systems, warehouse automation, and limited-use public driving functionality. The new SemiNex multi-junction laser enables high-power, longer-range, lower cost, eye-safe LiDAR solutions for autonomous trains, planes and automobiles.

“SemiNex invested 3 years in research & development to create a long-range and cost-effective solution to overcome the short-range limitations of existing technologies. We see this as a major game changer and believe it will revolutionize the way major LiDAR companies approach this challenge,” said David Bean, CEO of SemiNex Corporation.

The new SemiNex multi-junction laser diode enables eye-safe, autonomous LiDAR systems to reach greater than 250 meters without compromise. Present solutions limit visibility to 100 meters, requiring a vehicles speed to be at 25 mph or less. For the past ten years LiDAR manufacturers have taken two laser approaches for time-of-flight LiDAR systems: 905nm laser diodes or 1550nm fiber lasers. The 905nm laser diodes suffer from limited range due to eye-safety regulations and the 1550nm fiber lasers are impractical for mass market deployment because of their size and cost. Until now, there was no solution that offered the low-cost, small size, and efficiency of 905nm laser diodes with the eye-safety and extended range of 1550nm fiber lasers.

Neither of these past approaches meet the automotive industry goals to enable LIDAR commercialization. The lack of efficient and inexpensive 200 meter eye-safe LiDAR has held back the industry from commercializing autonomous vehicles and seeing any meaningful mass-market deployment at speeds greater than 25 mph. “The SemiNex multi-junction laser diode changes everything,” states Ed McIntyre, SemiNex Director of Sales & Marketing. “Now there is a low-cost, long-range, eye-safe alternative to 9XXnm diodes and 1550nm fiber lasers.”

Today, the LiDAR market for automotive and industrial applications is expected to be $981 million and limited to short range applications. However, with improvements in technology and broader acceptance, the market is expected to grow to $2.8 billion by 2025. A major challenge with the existing LiDAR technology for autonomous vehicles has been to find a cost-effective semi-conductor laser diode that can provide high peak power at eye-safe wavelengths for long range applications. Operating at 1550nm, the SemiNex triple junction device provides 3X the peak power of a single emitter thus improving the resolution and penetration effectiveness in bad weather while remaining eye-safe. It can be operated at pulse widths between 2ns and 100ns at 200kHz to 400kHz pulse repetition rate. SemiNex offers multi-junction devices between 1310nm and 1550nm at various aperture widths and cavity lengths to meet specific customer requirements.

“The SemiNex multi-junction laser diodes will allow vehicles to autonomously navigate at higher speeds that can’t be achieved with the existing technology; this could finally enable driverless cars to be a reality within the next 5 years,” suggests McIntyre.

The multi-junction device is available in double and triple junction configurations in various packaging and submount configurations. Samples in either TO-9 or bare die configuration at 1550nm are available for immediate delivery.

For more information visit or visit us at CIOE trade show in Shenzhen, China, September 11th– 13th Booth #2D80. To schedule a meeting with Hanyu Yang, our Applications Engineer, click here.

Seminex Aims to Revolutionize Home Skincare with Lasers


SemiNex Corporation is pleased to announce its collaboration with Dermal Photonics Corporation, maker of NIRA Skin, to bring professional dermatology laser technology to the home market at an affordable price. The NIRA Skincare Laser is the first of its kind, delivering dramatic and lasting improvements by stimulating natural collagen production to renew skin without causing pain or redness. The NIRA Skincare Laser holds 12 patents and is FDA-cleared with proven safety and efficacy based on clinical studies that were reviewed and cleared by the US government.

SemiNex is a major supplier for laser diodes for professional dermatology systems with over 15 years of experience supply to laser components for non-ablative fractional and non-fractional laser system.  To enable these types of non-ablative laser treatments for in-home use, SemiNex developed a patented low-cost packaging named the Laser Engine. The high-volume, low-cost Laser Engine enables Dermal Photonics to use the same laser diodes as a professional system in a cost-effective solution for the home market. SemiNex developed production capability to build over 100,000 units annually with plans to grow further as needed.  

SemiNex is proud to partner with Dermal Photonics who designed, assembles and manufactures their products in the USA. The skin-care market makes up about $100 billion with $40 billion focused on anti-aging skincare.

SemiNex is delivering an eye-safe 1450nm laser engine to Dermal Photonics for their NIRA Skincare Laser. The light being emitted from the SemiNex laser within the NIRA Skincare Laser is absorbed deep in the dermal cells and releases proteins which signal the body to rejuvenate and renew the skin. SemiNex provides Dermal Photonics best-in-class laser technology that provides real and dramatic results while avoiding all the traditional issues with lasers such as high cost, pain, redness (erythema), and difficulty of use.

Laser Engine

Customers from all over the world are noticing a difference. “My face has not looked this young or this good in more than a decade. This product was painless and delivered amazing results,” said one NIRA Skin customer in their product review.

In December 2019, NIRA was featured on Ideal World, a UK home shopping network, for the first time and it was a major success. They sold out of their allotment of NIRA Skincare Lasers within the first show and had to rush 3 additional shipments overseas to the Ideal World England warehouse to keep up with demand. The product was so successful that Ideal World has brought back NIRA for two additional weeks and is scheduled to hold a “Pick of the Day” special promotion soon. 

“With the present COVID-19 situation, we are finding people who would normally go to their professional dermatologist or medical spas for treatments, can now treat themselves in the comfort of their own home using the NIRA Skincare Laser,” commented David Bean, Founder/Inventor of Dermal Photonics.

David Bean

If you have any requests or inquiries, we are here to assist and support. Please contact us by e-mail at or at

About NIRA Skin:

NIRA Skin is committed to providing the newest generation skincare solutions to help improve the health and beauty of your skin. We believe everyone should have access to professional-level skincare at home and at an affordable price. NIRA Skin brings you the same technology used by professionals into the home, with an easy-to-use program that is enjoyable to use and guarantees results.

Learn more at

For additional information please contact NIRA Skin at

COVID-19 – How we are managing in these uncertain times

First and foremost, we hope you and your family are well. During this period of uncertainty, we feel a major responsibility in helping slow the spread of COVID-19 in the US. Our office is taking every precaution to ensure the health and safety of our clients, colleagues, and staff while remaining fully functional during this worldwide crisis.

Our sales teams and most office staff are fully equipped to work remotely and meet the needs of our customers. Meanwhile, our operation team is ensuring business continuity by working in small shifts and strict procedures to keep safe and effective operations.

We are focusing our attention on meeting our delivery commitments to all our customers and most importantly we support medical projects like the Veralase laser vaccine adjuvant development that will increase the efficacy of vaccinations up to 10X when a COVID-19 vaccine is discovered. As a key supplier of critical components into defense and medical industries, SemiNex is designated as an “essential” business and we continue to work through this crisis and to support important medical development and other critical industries.

Specifically, at SemiNex we are applying the follow procedures to ensure safety:

  • -No in-person visitors; we encourage phone and web-conferences
  • -General hygiene and safety precautions
  • -Important actions for safety at the workplace
  • -Sanitizing the workplace and maintaining hygiene
  • -Safety of shared surfaces (meeting rooms, work desks, bathrooms etc.)
  • -Screening of visitors
  • -Travel on hold
  • -Reducing large gatherings and meetings
  • -Elbow bump instead of handshakes

We thank you for your understanding and cooperation through this extraordinary period of time. We will keep you informed of any significant changes.

If you have any requests or inquiries, we are here to assist and support. Please contact us by e-mail at or at

LMU MUNICH and MPQ Reveal Direct Diode-Pumped KLM Cr:ZnSe Oscillator

Research by a joint team of scientists from the Max Planck Institute of Quantum Optics and the Ludwig Maximilian University of Munich has led to the first directly diode-pumped Kerr-lens mode-locked Cr2+-doped II-VI oscillator capable of providing average output powers over 500 mW using a SemiNex diode as the diode source. This development will reduce the cost dramatically by more than 5X over the existing common fiber laser technologies available on the market today.

“With this new class of cost-effective and table-top driver for mid-infrared generation, we have taken a crucial step in providing a more accessible alternative to synchrotron-like infrared radiation,” emphasized Nathalie Nagl, Ph.D. student at the LMU Munich.

Cost-efficient MIR sources are requisite to meeting the growing demand in a spectroscopy market estimated to be worth $1.27 Billion by 2022¹. Known as the molecular “fingerprint region,” the mid-infrared can be used to accurately identify samples for pharmaceutical, defense, food safety and manufacturing processes.

The performance of the team’s solution rivals larger, more costly fiber-pumped oscillators by yielding 2.5-times the peak power compared to previous Cr:ZnSe oscillators at 45 fs pulse durations and delivers outstanding low-noise performance.

Other efforts to directly pump Cr:ZnS/ZnSe crystals using diodes in the 1.5-1.6 um regime have been hampered by heat-related issues. SemiNex InP diodes are designed to provide the best thermal performance and highest brightness at these wavelengths in the market today.

“SemiNex is constantly looking to participate with companies and universities to develop innovative technologies that will open new markets for us to participate in. This new approach will impact the availability of lower cost/higher performance portable spectroscopic devices in the mid-IR range,” commented Ed McIntyre, head of Business Development at SemiNex Corporation.

The results of the project were presented at the CLEO conference during this year’s Laser World of Photonics in Munich, and have recently been published in the journal Optics Express². For inquiries about the research team, please contact Nathalie Nagl at

Visit SemiNex at Booth #163 at Photonics West Moscone Center, San Francisco, CA, or schedule a meeting with Hanyu by clicking here.