Study of the Short-Wave Infrared Range Photodetector Array Module in the Rangefinder Mode

The first domestic matrix photodetector module (PDM) of the short-wave infrared range (SWIR) for active-pulse imaging devices is presented. The PDM includes matrix p–i–n photodiodes based on an InGaAs/InP heterostructure, with a 320 × 256 format with a step of 30 microns; a large integrated circuit for reading photosignals; thermoelectric cooler; and a sealed case with a sapphire window. The main feature of the PDM is the ability to operate in 3 modes: passive 2D, active-pulse 3D (rangefinder), and asynchronous binary. A flexible combination of these modes allows you to get the maximum information about the observed objects. The information about the range, formed in each pixel of the PDM, in combination with the brightness signals, allows synthesis of 3D images of objects. The paper presents the results of a study of a PDM operating in an active-pulse 3D (rangefinder) mode. The results of an experiment on the creation of a 3D-image effect are presented, which confirm the ability of the PDM to detect objects at different distances with a high resolution.