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Proceedings Paper

Stabilize cw laser power by successive approximation method
Author(s): Hejun Yao; Zai-Qing Li; Renyu Zhang
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Paper 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.

Paper Details

Date Published: 30 September 1996
PDF: 4 pages
Proc. SPIE 2889, High-Power Lasers: Solid State, Gas, Excimer, and Other Advanced Lasers, (30 September 1996); doi: 10.1117/12.253288
Show Author Affiliations
Hejun Yao, National Institute of Metrology (China)
Zai-Qing Li, National Institute of Metrology (China)
Renyu Zhang, National Institute of Metrology (China)


Published in SPIE Proceedings Vol. 2889:
High-Power Lasers: Solid State, Gas, Excimer, and Other Advanced Lasers
Sui-Sheng Mei; Keith A. Truesdell, Editor(s)

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