Dual-band QWIP MWIR/LWIR focal plane array test results

Arnold C. Goldberg; Theodore Fischer; Stephen W. Kennerly; Samuel C. H. Wang; Mani Sundaram; Parvez N. Uppal; Michael L. Winn; Gregory L. Milne; Mark A. Stevens

doi:10.1117/12.391740

17 July 2000 Dual-band QWIP MWIR/LWIR focal plane array test results

Arnold C. Goldberg, Theodore Fischer, Stephen W. Kennerly, Samuel C. H. Wang, Mani Sundaram, Parvez N. Uppal, Michael L. Winn, Gregory L. Milne, Mark A. Stevens

Author Affiliations +

Proceedings Volume 4028, Infrared Detectors and Focal Plane Arrays VI; (2000) https://doi.org/10.1117/12.391740
Event: AeroSense 2000, 2000, Orlando, FL, United States

Abstract

We report on the results of laboratory and field tests on a pixel-registered, 2-color MWIR/LWIR 256 X 256 QWIP FPA with simultaneous integrating capability. The FPA studied contained stacked QWIP structures with spectral peaks at 5.1 micrometer and 9.0 micrometer. Normally incident radiation was coupled into the devices using a diffraction grating designed to operate in both spectral bands. Each pixel is connected to the read-out integrated circuit by three bumps to permit the application of separate bias levels to each QWIP stack and allow simultaneous integration of the signal current in each band. We found the FPA to have high pixel operability, well balanced response, good imaging performance, high optical fill factor, and low spectral crosstalk. We present data on measurements of the noise-equivalent temperature difference of the FPA in both bands as functions of temperature and bias. The FPA data are compared to single-pixel data taken on devices from the same wafer. We also present data on the sensitivity of this FPA to polarized light. It is found that the LWIR portion of the device is very sensitive to the direction of polarization of the incident light. The MWIR part of the device is relatively insensitive to the polarization. In addition, imagery was taken with this FPA of military targets in the field. Image fusion techniques were applied to the resulting images.

Citation Download Citation

Arnold C. Goldberg, Theodore Fischer, Stephen W. Kennerly, Samuel C. H. Wang, Mani Sundaram, Parvez N. Uppal, Michael L. Winn, Gregory L. Milne, and Mark A. Stevens "Dual-band QWIP MWIR/LWIR focal plane array test results", Proc. SPIE 4028, Infrared Detectors and Focal Plane Arrays VI, (17 July 2000); https://doi.org/10.1117/12.391740

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