Broadband Optical Attenuator via Amplified Free Carrier Absorption

Broadband Optical Attenuator via Amplified Free Carrier Absorption

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Physical Sciences Inc. (PSI) has been awarded a Phase II STTR contract from the US Army to develop and mature a fast, frequency-agile, stimuli-responsive, and tunable optical filters that autonomously protect sensors from damaging optical beams, while allowing unobstructed transmission of non-damaging wavelengths and intensities. With our university partner, PSI is developing a technology that that uses amplified free carriers to attenuate more than 99.9% of a high power incident pulse. An individual device will be able to protect against unknown threats across a broad bandwidth (e.g. the full visible) and the concept can be designed to operate in the visible, near infrared and short wave infrared bands, while exhibiting high transmission in the absence of high-intensity threats.

For more information contact:

Dr. David Woolf
Group Leader, Structured Optical Materials
Physical Sciences Inc.
Office: (978) 689-0003

Acknowledgement of Sponsorship: This work is supported under a contract with the U.S. Army. This support does not constitute an express or implied endorsement on the part of the Government.