Infrared imaging arrays based on superlattice photodiodes

Cory J. Hill; Alexander Soibel; Sam A. Keo; Jason M. Mumolo; Sarath D. Gunapala; David R. Rhiger; Robert E. Kvaas; Sean F. Harris

doi:10.1117/12.783934

1 May 2008 Infrared imaging arrays based on superlattice photodiodes

Cory J. Hill, Alexander Soibel, Sam A. Keo, Jason M. Mumolo, Sarath D. Gunapala, David R. Rhiger, Robert E. Kvaas, Sean F. Harris

Author Affiliations +

Proceedings Volume 6940, Infrared Technology and Applications XXXIV; 69400C (2008) https://doi.org/10.1117/12.783934
Event: SPIE Defense and Security Symposium, 2008, Orlando, Florida, United States

Abstract

We report on the status of focal plane arrays (FPAs) based on GaSb/InAs type-II superlattice diodes grown by molecular beam epitaxy (MBE) and designed for infrared absorption in the 2-5μm and 8-10μm bands. Recent LWIR devices have produced differential resistance-area product greater than 100 Ohmcm² at 80K with a long wavelength cutoff of approximately 10μm. The measured quantum efficiency of these front-side illuminated devices is close to 25% in the 8-9 μm range. MWIR devices have produced detectivities as high as 8x10¹³ Jones with a differential resistance-area product greater than 3x10⁷ Ohmcm² at 80K with a long wavelength cutoff of approximately 3.7μm. The measured quantum efficiency of these front-side illuminated MWIR devices is close to 40% in the 2-3μm range at low temperature and increases to over 60% near room temperature. Initial results on SiO₂ and epitaxial-regrowth based passivation techniques are also presented, as well as images from the first lot of 1kx1k MWIR arrays and our latest 256x256 LWIR arrays.

Citation Download Citation

Cory J. Hill, Alexander Soibel, Sam A. Keo, Jason M. Mumolo, Sarath D. Gunapala, David R. Rhiger, Robert E. Kvaas, and Sean F. Harris "Infrared imaging arrays based on superlattice photodiodes", Proc. SPIE 6940, Infrared Technology and Applications XXXIV, 69400C (1 May 2008); https://doi.org/10.1117/12.783934

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