Laser power stabilization systems with time sequence control

ZHANG Shu; JIN Shangzhong; FAN Xialei; LI Ye; LIN Baike; LIN Yige; FANG Zhanjun

doi:10.7510/jgjs.issn.1001-3806.2016.04.001

In order to cope with changeable environment and complex requirements of strontium optical lattice clock experiments, laser power should be stabilized and controlled in time sequence in some laser paths. Acousto-optic modulation was adopted to stabilize the laser power based on the principle that diffraction efficiency of acousto-optic crystal varies with the change of driving radio frequency power. A feedback control system was established to realize active stabilization of laser power and timing control of power. The result shows that laser power can be set at arbitrary levels within its setting range according to time sequence. When the control system is enabled, the relative laser power stability is improved from 10-2 to 10-4 compared with the disabled state. The advantage of the system is power stability with timing control.

Laser power stabilization systems with time sequence control

Corresponding author: LIN Yige, jinsz@cjlu.edu.cn;

1. College of Optical and Electronic Technology, China Jiliang University, Hangzhou 310038, China;

2. Research Division of Time and Frequency, National Institute of Metrology, Beijing 100013, China;

3. Department of Precision Instrument, Tsinghua University, Beijing 100084, China

Received Date: 2015-06-02

Accepted Date: 2015-06-24

Available Online: 2016-07-25

Abstract: In order to cope with changeable environment and complex requirements of strontium optical lattice clock experiments, laser power should be stabilized and controlled in time sequence in some laser paths. Acousto-optic modulation was adopted to stabilize the laser power based on the principle that diffraction efficiency of acousto-optic crystal varies with the change of driving radio frequency power. A feedback control system was established to realize active stabilization of laser power and timing control of power. The result shows that laser power can be set at arbitrary levels within its setting range according to time sequence. When the control system is enabled, the relative laser power stability is improved from 10-2 to 10-4 compared with the disabled state. The advantage of the system is power stability with timing control.

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Reference (15)

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Laser power stabilization systems with time sequence control

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