A new-type laser spot size detector

Tingwan Wu; Chao Li

doi:10.1117/12.562560

22 October 2004 A new-type laser spot size detector

Tingwan Wu, Chao Li

Proceedings Volume 5524, Novel Optical Systems Design and Optimization VII; (2004) https://doi.org/10.1117/12.562560
Event: Optical Science and Technology, the SPIE 49th Annual Meeting, 2004, Denver, Colorado, United States

Abstract

This paper reports the experimental research result for the measurement of laser pot size and the beam waist with a new method, basic on that a new type detector fabricated with monocrystalline silicon. The design idea for the detector was demonstrated right and doable theoretically and experimentally, with new approach, the so-called "pre-saturation" of silicon. This new detector can detect the size of laser beam pot quickly and accurately, with wide response wavelength band and quite small expense. Also in this work, an interesting novel phenomenon, some abnormal variations of photo- voltage, is observed. For that the model of "competition between photons" set up to give a good qualitative interpretation, which leaded to the final success of experiment design.

Citation Download Citation

Tingwan Wu and Chao Li "A new-type laser spot size detector", Proc. SPIE 5524, Novel Optical Systems Design and Optimization VII, (22 October 2004); https://doi.org/10.1117/12.562560

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