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SM Series Lens Tubes and Accessories
商品货号:ECS000373
商品品牌:Thorlabs
PDF 文档: DownloadSM Series Lens Tubes and Accessoriesdetails Document
详细介绍

Features

  • Adjustable HV Supply
  • SMA Output
  • 2 Spectral Ranges Available

Photomultiplier Tubes, or PMTs, are sensitive, high-gain devices that provide a current output that is proportional to the incident light. When light is incident on the photocathode of a PMT, electrons are ejected from the surface. The electrons then cascade down a chain of dynodes, each at a successively higher electric potential, until reaching the anode. As the electrons cascade, they free electrons from each dynode surface, resulting in a measureable output current upon reaching the anode.

Thorlabs now offers two photomultiplier modules, each with a different PMT. The PMT in the PMM01 module has the advantage of a smaller dark current and a larger gain; however, the PMT in the PMM02 module can be used to detect light over a greater spectral range. Both modules come with a high-gain, dc coupled, transimpedance amplifier. Since these modules are compatible with our 30 mm cage systems and SM1 lens tubes, imaging optics and filters can be easily mounted and centered on the photocathode of the PMT. Stray and scattered light can be prevented from reaching the detector by utilizing lens tubes to mount the optical components; this is particularly advantageous when working with weak or noisy signals.

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