32 x 32 Geiger-Mode Avalanche Photodiode (GmAPD) Focal Plane Array (FPA)

Princeton Lightwave has released 32 x 32 Geiger-mode avalanche photodiode (GmAPD) focal plane arrays (FPAs) for use in three-dimensional laser radar (LADAR) imaging systems. These 100 µm pixel pitch imaging sensors incorporate InP/InGaAs(P) GmAPDs pixels that provide true single photon sensitivity at shortwave infrared wavelengths with high photon detection efficiency and low dark count rates. GmAPD detector arrays are hybridized to CMOS read-out integrated circuits (ROICs) that enable independent LADAR time-of-flight range measurements at every pixel. Each ROIC pixel also includes an active quenching circuit governing Geiger-mode operation, and high-bandwidth readout circuitry provides 3-D image data transfer at frame rates approaching 200 kHz. GaP microlens arrays are used to maintain high fill factors, and the hermetically sealed FPA housing has an integrated two-stage thermoelectric cooler with pin-grid array electronic connections and a multi-layer antireflection-coated window.

The GmAPD FPA is available in versions optimized specifically for system operation with 1.06 µm lasers or 1.55 µm lasers. The FPA is also supplied with an FPGA-based interface board and GUI-driven software to provide flexible turn-key operation of the FPA with camera-level functionality.

Please contact Princeton Lightwave for additional specifications and pricing.

SOURCE: Princeton Lightwave