Stabilize cw laser power by successive approximation method

Hejun Yao; Zai-Qing Li; Renyu Zhang

doi:10.1117/12.253288

30 September 1996 Stabilize cw laser power by successive approximation method

Hejun Yao, Zai-Qing Li, Renyu Zhang

Proceedings Volume 2889, High-Power Lasers: Solid State, Gas, Excimer, and Other Advanced Lasers; (1996) https://doi.org/10.1117/12.253288
Event: Photonics China '96, 1996, Beijing, China

Abstract

The successive approximation method was used to stabilize cw laser power. Silicon photodiode is used to monitor the laser output power, and elector-optical modulator is used to control the power. The feedback loop could work in both linear and non-linear states. Thus the time to reach stabilization is shorten and the stability is improved. We experiment with an external He-Ne laser whose own output power is 8 mW and stability is 3%, and obtained stable output power 5.5 mW with stability 0.002%/hour. This kind of laser power stabilizer can also be used in other visible to near infrared laser.

Citation Download Citation

Hejun Yao, Zai-Qing Li, and Renyu Zhang "Stabilize cw laser power by successive approximation method", Proc. SPIE 2889, High-Power Lasers: Solid State, Gas, Excimer, and Other Advanced Lasers, (30 September 1996); https://doi.org/10.1117/12.253288

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