DET210 ThorLabs High-Speed Photo Detector

The Thorlabs High-Speed DET Photo Detectors are compact, versatile, high-speed optical detectors. Each model comes complete with a fast PIN photodiode and an internal bias battery packaged in a rugged aluminum housing. With a wide bandwidth DC-coupled output, these detectors are ideal for monitoring fast-pulsed lasers as well as DC sources. Each DET has a Bias-T circuit that combines a high frequency AC signal to a DC signal into a single output. The direct photodiode anode current is provided on a side panel BNC. This output is easily converted to a positive voltage using a terminating resistor. We recommend a 50Ω load resistance for the fastest response times. Each DET includes a 12V Bias battery installed.

The Thorlabs' DET410 is a ready-to-use high-speed photo detector. The unit comes complete with a photodiode and internal 12V bias battery enclosed in a ruggedized aluminum housing. The head includes a removable 1" optical coupler (SM1T1), providing easy mounting of ND filters, spectral filters and other Thorlabs 1" stackable lens mount accessories. Also available are fiber adapters (SMA, FC and ST style). The FC adapter part number is SM1FC. A #8-32 tapped hole, is provided on the base of the housing to mount the detector directly to a Thorlabs' positioning device (1/2" post holder, mounting plates, etc.).