| 驻波声光效应对激光相干性的两维调制 |
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| 引用本文： | 董孝义,盛秋琴,夏顺保,王许明,张小洁.驻波声光效应对激光相干性的两维调制[J].中国激光,1986,13(1):8-13. |
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| 作者姓名： | 董孝义 盛秋琴 夏顺保 王许明 张小洁 |
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| 作者单位： | 南开大学现代光学研究所
(董孝义，盛秋琴，夏顺保，王许明)，南开大学现代光学研究所(张小洁) |
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| 摘 要： | 给出两维超声驻波调制光学相干度的理论,并作出了相应分析。理论结果表明,当使用具有同频且相位相关的两维超声驻波场时,两超声场间的相位差(即关联因子)对相干度调制有显著影响,而在使用超声行波时这种影响则很小。 用交叉电极和电光晶体声共振效应激励起来的两维超声驻波场进行了实验,结果与理论分析大体相符。
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| 收稿时间： | 1984/8/19 |
2-D modulation of spatial coherence of laser light by standing A-O effect |
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| Abstract: | The theory on optical coherence modulation using 2-D ultrasonic standing waves is reported and corresponding analyses are made. Theoretical results show that when 2-D ultrasonic standing waves are used, the phase difference between two ultrasonic waves (i. e., correlation coefficient) with the same frequency and correlated phase has strong influence on modulation of coherence degree and that effect is small when ultrasonic travelling wave are nsed.Also reported are the preliminary measured results on coherence degree modulated with 2 D ultrasonic standing waves excited by two cross electrodes and AO-EO resonant coupling effects of LN EO-crystal respectively. The results agree with the theoretical analysis. |
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