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model 407A Spectra-Physics

Spectra-Physics社 model 407A 光検出器、動作機序は熱感知式

The detection and measurement of laser power can be classified under two headings, photon detection and thermal detection.
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The present discussion will focus on thermal detectors since the Model 407A uses one type of thermal detector.
http://www.newport.com/images/webDocuments-EN/images/21580.pdf

PMT(フォトマル)のような光子増幅→電圧変換ではなく、なるだけ黒体(brack body)に近い物質でコートしたdetect部+熱電対などで光→熱→電気信号変換

f:id:tarepan5884:20150927120423j:plain Fig. model407A