A tunable QWIP FPA device that is configured for spectral tunability for performing the likes of imaging and spectroscopy is disclosed. A selected bias voltage is applied across the contacts associated with a particular detector layer/channel of the device, where each applied bias corresponds to a particular target spectrum/color for detection. Each detector layer/channel can be coarse tuned for a bimodal or dual-band operation (e.g., MWIR/LWIR). Also, each detector layer/channel is configured for continuous or fine tuning within a particular mode (e.g., MWIR/MWIR). Thus, dynamic bias-controlled tuning is enabled. Asymmetric quantum well configurations enable this tunability.
RELATED APPLICATIONS
This application is a continuation-in-part of U.S. patent application Ser. No. 09/746,956, filed Dec. 22, 2000 now U.S. Pat No. 6,875,975, which claims the benefit of U.S. Provisional Application No. 60/173,077, filed Dec. 24, 1999. This application is also a continuation-in-part of U.S. patent application Ser. No. 10/781,523, filed Feb. 18, 2004 now U.S. Pat. No. 7,238,960. Each of these applications is herein incorporated in its entirety by reference.
