Study on high-range frequency tuning technology for nonplanar ring laser
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School of Opto-Electronic Information, University of Electronic Science and Technology of China, Chengdu 610054, China
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Corresponding author:
WANG Yun-xiang, wanyunxiang@uestc.edu.cn
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Received Date:
2012-07-17
Accepted Date:
2012-08-13
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Abstract
In order to realize high-range piezoelectric(PZT)frequency tuning and temperature frequency tuning of a narrow line width Nd:YAG nonplanar ring laser,applying high voltage modulation signals on a thin PZT affixed to a monolithic laser crystal and changing the temperature of the laser crystal on a large scale,the tuning range is up to 210MHz,the response bandwidth is larger than 90kHz and the PZT tuning coefficient is more than 1MHz/V.When the temperature of the laser crystal is changed from 10℃ to 47℃,the laser frequency can be tuned continuously by 8GHz between the mode-hops covering an overall frequency tuning range of 61GHz.The experimental results show that the distortion of the beat signal in high frequency tuning is caused by the distortion of the PZT driving signal.With the advantages of PZT tuning and temperature tuning,good results of laser frequency tuning were obtained in the experiments.
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