Request InfoMartin, Froeschner & AssociatesMartin, Froeschner & Associates' Series 99 photodetector modules incorporate extremely fast photo-diodes and monolithic microwave amplifiers and have a spectral range from 850 to 1750 nm. These compact ultrafast and supersensitive instruments are true-DC coupled and have internal batteries and an adjustable gain feature. Sensitivity can be set with a continuous four-turn or discrete 10-position selector to produce volt-level signals at incident light levels ranging from microwatts to milliwatts.See full productRelated content from Photonics MediaPRODUCTSPhotonics Spectra September 2023 IssueMulti-Stage Thermoelectric CoolersThe OptoTEC™ MSX series of micro multistage thermoelectric coolers from Laird Thermal Systems Inc. allows integration into various optical packages. 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