| Improving frequency stability of laser by means of temperature-controlled Fabry-Perot cavity |
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| 作者姓名： | 赵法刚 潘庆 彭堃墀 |
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| 作者单位： | State Key Laboratory of Quantum Optics and Quantum Optics Devices，Institute of Opto-Electronics，Shanxi University. Taiyuan 030006，State Key Laboratory of Quantum Optics and Quantum Optics Devices，Institute of Opto-Electronics，Shanxi University. Taiyuan 030006，State Key Laboratory of Quantum Optics and Quantum Optics Devices，Institute of Opto-Electronics，Shanxi University. Taiyuan 030006 |
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| 基金项目： | This research was supported by the Major State Basic Research Project of China (No. 2001CB309304)，the National Natural Science Foundation of China (No. 60238010, 60178012, and 60378014), and Shanxi Provin- cial Science Foundation (No. 20011030). |
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| 摘 要： | The frequency stability of an all-solid-state Nd:YVO4 laser is significantly improved by means of a specially designed Fabry-Perot (F-P) interferometer used for the frequency standard in the frequency-stabilizing system. The ten.peraturo of the F-P cavity is accurately controlled by a set of thermoelectric cooler (TEC) modules attached on th dy of the cavity and the electronic feedback circuit. We find that the long-term unidirectional frequency shift of the output laser, resulting from the slow increase of the cavity length under the effect of the temperature integration on the cavity body, is essentially eliminated. The frequency stability of the output laser with the power of 530 mW is better than ±200 kHz in 1 minute and ±2.3 MHz iu 40 minutes, respectively. The fluctuation of output power is smaller than ±0.5% over one hour.
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