Resonant-cavity infrared detectors with high quantum efficiency and very thin absorbers at 4.0 microns

I. Vurgaftman; C. L. Canedy; C. D. Merritt; C. S. Kim; W. W. Bewley; M. Kim; M. V. Warren; S. Tomasulo; E. M. Jackson; J. A. Nolde; C. A. Affouda; E. H. Aifer; J. R. Meyer

doi:10.1117/12.2518927

7 May 2019 Resonant-cavity infrared detectors with high quantum efficiency and very thin absorbers at 4.0μm

I. Vurgaftman, C. L. Canedy, C. D. Merritt, C. S. Kim, W. W. Bewley, M. Kim, M. V. Warren, S. Tomasulo, E. M. Jackson, J. A. Nolde, C. A. Affouda, E. H. Aifer, J. R. Meyer

Author Affiliations +

Proceedings Volume 11002, Infrared Technology and Applications XLV; 110020D (2019) https://doi.org/10.1117/12.2518927
Event: SPIE Defense + Commercial Sensing, 2019, Baltimore, MD, United States

Abstract

We report resonant-cavity infrared detectors with absorbers that consist of only five quantum wells, but exhibiting 34% external quantum efficiency at room temperature at the resonant wavelength of 4.0 μm. The FWHM linewidth is 46 nm, and the peak absorption is enhanced by nearly a factor of 30 over that for a single pass through the absorber. Although the Shockley-Read lifetime in the current material is much shorter than the state of the art, the dark current density is at the level of HgCdTe detectors as quantified by “Rule 07”. The Johnson-noise limited detectivity (D*) at 21°C is 7 × 10⁹ cm Hz^½/W. We expect that future improvements in the device design and material quality will lead to higher quantum efficiency, as well as a significant reduction of the dark current density consistent with the very thin absorber.

Conference Presentation

Citation Download Citation

I. Vurgaftman, C. L. Canedy, C. D. Merritt, C. S. Kim, W. W. Bewley, M. Kim, M. V. Warren, S. Tomasulo, E. M. Jackson, J. A. Nolde, C. A. Affouda, E. H. Aifer, and J. R. Meyer "Resonant-cavity infrared detectors with high quantum efficiency and very thin absorbers at 4.0μm", Proc. SPIE 11002, Infrared Technology and Applications XLV, 110020D (7 May 2019); https://doi.org/10.1117/12.2518927

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