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The SAR500x silicon avalanche photodiodes (Si-APD) from Laser Components (Hudson, NH) feature a 500-μm detector chip with a “reach-through” structure. This structure is responsible for sensitivity in the spectral range of 400 nm to 1,100 nm and, simultaneously, for rise and fall times typically of 450 ps. It is suitable for laser range finding and optical communication, with data transfer rates of up to 1 Gbit/s. It can detect a small amount of light and is suitable for low-noise and low dark current applications, typically 200 pA@M = 100. The SAR500x is available in a hermetically sealed TO-18 can. The SARP500 version can be delivered in a TO-18 can with a thermoelectric cooler in a TO-37 can. It is additionally suitable for use in spectroscopy, fluorescence measurements, medical technology, and LIDAR applications.

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