中/长波切换工作模式的双色量子阱红外焦平面研制

报道了中/长波切换工作模式的双色量子阱红外焦平面研制。通过特殊设计的器件和读出电路结构,获得了可对中波波段和长波波段选择的切换架构。突破了双色量子阱材料、器件以及读出电路等关键技术,研制出384288规模、25 m中心距双色量子阱红外焦平面探测器。在70 K条件下器件性能优良,噪声等效温差为28 mK(中波)和30 mK(长波),响应峰值波长分别为5.1 m(中波)和8.5 m(长波)。室温目标红外成像演示了探测器的双色探测功能。

Dual color QWIP FPA with MW/LW switchable architecture

The development of the the MWIR/ LWIR dual color quantum well infrared FPA with the architecture switching between MWIR and LWIR was reported. The architecture including chip and read-out circuit (ROIC) frame was specially designed to realize the selection and switch of the MW band and LW band. The QWIP FPA key technologies such as quantum well material epitaxy, chip preparation and ROIC were described. The dual color 25 m pitch 384288 QWIP FPA is realized with the excellent noise equivalent temperature difference (NETD) of 28 mK in the MWIR and 30 mK in the LWIR at a operating temperature of 70 K. The peak wavelength is 5.1 m for MWIR and 8.5 m for LWIR. The infrared image of the target at room-temperature demonstrates the dual color detection function of the FPA.