A Tunable transmission filter using Phase Change Materials (PCM) for smart IR night vision applications

Remona Heenkenda; Keigo Hirakawa; Andrew M. Sarangan

doi:10.1117/12.2670243

15 June 2023 A Tunable transmission filter using Phase Change Materials (PCM) for smart IR night vision applications

Remona Heenkenda, Keigo Hirakawa, Andrew M. Sarangan

Proceedings Volume 12514, Image Sensing Technologies: Materials, Devices, Systems, and Applications X; 125140I (2023) https://doi.org/10.1117/12.2670243
Event: SPIE Defense + Commercial Sensing, 2023, Orlando, Florida, United States

Conference Poster

Abstract

We demonstrate the design of a transmission filter that can switch the 850nm transmission band on and off to enable a single silicon camera to perform day time and night time (NIR) imaging. In a prior work we demonstrated imaging trials using a tunable reflection-mode filter, but it required a separate dual band static filter for proper operation. Our new design is a self-contained filter that does not require a second filter. It utilizes GSST (Ge2Sb2Se4Te1) as a phase change material to dynamically alter the transmission spectrum. The design consists of a DBR cavity with an active layer consisting of the phase change material and a compensating dielectric film.

Citation Download Citation

Remona Heenkenda, Keigo Hirakawa, and Andrew M. Sarangan "A Tunable transmission filter using Phase Change Materials (PCM) for smart IR night vision applications", Proc. SPIE 12514, Image Sensing Technologies: Materials, Devices, Systems, and Applications X, 125140I (15 June 2023); https://doi.org/10.1117/12.2670243

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available