SPDMH2F

SPAD Modules & Single-Photon Detectors by THORLABS (US)

SPDMH2F – SPAD Modules & Single-Photon Detectors by THORLABS

Overview

These SPDMHx Single Photon Detector Modules feature high photon detection efficiencies (PDEs) that extend into the NIR and low dark count rates, enabled by combining ultra-low-noise silicon avalanche photodiodes with specially developed quenching and signal processing electronics. Incoming photons generate corresponding electrical pulses that are converted into TTL pulses at the LEMO connector output. A LEMO to BNC adapter is included. Versions are available with a maximum dark count rate of 100 Hz (Item #s SPDMH2 and SPDMH2F) or 250 Hz (Item #s SPDMH3 and SPDMH3F). The detectors can be purchased in a free-space version (Item #s SPDMH2 or SPDMH3) that has internal SM1 (1.035"-40) threading for compatibility with Ø1'' lens tubes. We also offer versions with an FC/PC fiber optic receptacle that is pre-aligned to the detector, allowing a multimode fiber optic patch cable to be directly connected to the input (Item #s SPDMH2F or SPDMH3F). For flexible integration into optical systems, there is an 8-32 tapped hole on each side of the input. The base plate of the detector can be mounted directly to an optical table or breadboard using CL4 Table Clamps. Alternatively, three Ø3.9 mm (Ø0.15") through holes on each side of the base plate accept 6-32 screws for compatibility with the BA4 mounting base. For the free-space detectors, we recommend mounting the BA4 mounting base to a 3-Axis translation stage or other positioning stage to enable precise alignment. In order to avoid damage to the module, adequate heat sinking must be provided by placing or mounting the module onto a suitable heat sink, e.g. an optical table, breadboard or base plate. Avoid stray light impinging on the detector, which affects the count rate. Employ appropriate shielding for the SPDMH2 and SPDMH3 free space models and make sure that any optical fiber assembly attached to the FC/PC connector of the SPDMH2F or SPDMH3F modules shields unwanted light. A power supply with a region-specific plug is included with each module.

Specifications

Wavelength Range400–1000 nm
Minimum Peak PDE50 %
Max Dark Count100 cps

Reference price: 6,629.44 USD

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