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ADTECH PHOTONICS, INC STTR Phase I Award, October 2020

A STTR Phase I contract was awarded to ADTECH PHOTONICS, INC in October, 2020 for $139,626.0 USD from the U.S. Department of Defense and United States Navy.

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AbstractTimelineTable: Further ResourcesReferences
sbir.gov/node/1926267
Is a
SBIR/STTR Awards
SBIR/STTR Awards

SBIR/STTR Award attributes

SBIR/STTR Award Recipient
ADTECH PHOTONICS, INC
ADTECH PHOTONICS, INC
1
Government Agency
U.S. Department of Defense
U.S. Department of Defense
1
Government Branch
United States Navy
United States Navy
1
Award Type
STTR1
Contract Number (US Government)
N68936-21-C-00071
Award Phase
Phase I1
Award Amount (USD)
139,6261
Date Awarded
October 29, 2020
1
End Date
April 29, 2021
1
Abstract

Quantum Cascade Lasers (QCLs) are one of the most versatile sources of radiation in the mid-infrared range and have found applications in a variety of fields. Despite their widespread adoption, one of the main hurdles holding QCLs back from large volume manufacturing is the large cost of ownership. While QCLs, like most semiconductor devices based on III-V compounds, can leverage the economies of scale typical of semiconductor manufacturing, and therefore lower production cost at wafer and chip level, it is at the testing and packaging stages of QCL production that most of the cost can build up and not scale as easily in large volumes. One of the most time-consuming steps during the post-fabrication testing and packaging process is device burn-in. Burn-in generally consists in running the devices in controlled conditions deemed representative of the actual operating specs in the field for a number of hours. This is done in order to screen out possible early degradation issues that may lead to costly device replacement after system installation is complete. Notwithstanding the importance of this issue, up till now there are no recognized industry standards for device burn-in qualification procedures and there are no proven models for laser degradation to support such procedures. Optimizing early screening of defective devices by improved burn-in procedures is likely going to reduce post-fabrication costs (testing, packaging, installation, etc.) which in large volume manufacturing typically represent the largest portion of production costs. A long burn-in procedure (i.e. 100hrs or more) can help reduce the rate of rejection of QCLs from ~20% straight out of the wafer to less than 2% when delivered to the customer, so a 10-fold reduction in returned product costs both for the manufacturer and for the final user. This result though, comes at the cost of a very time-consuming procedure that cannot easily be scaled up to large volumes without increasing the cost of capital equipment and production logistics. Reducing the burn-in time to a few hours, or maybe even minutes, at least for the devices most likely to fail, will unlock a great cost reduction for the manufacturer that can be passed on to the final user. The key to realizing such a dedicated burn-in procedure lays in the following main steps: Understand the failure mechanisms of high power QCLs (device degradation models) Enhance burn-in stressors that map the failure modes specific to QCLs (“accelerated” burn-in) Identify key screening parameters leading to early signs of degradation (“quick rejection” tests) In this way we can not only build a more effective burn-in procedure that can reduce the rejection rate of finished products, but we will also be able to reject defective devices earlier in the process and therefore reduce the costs associated with testing time and facilities.

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