| 用超声光栅测量氦氖激光的波长 |
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| 引用本文： | 杨燕婷,王敏,周誉昌.用超声光栅测量氦氖激光的波长[J].大学物理,2009,28(7). |
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| 作者姓名： | 杨燕婷 王敏 周誉昌 |
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| 作者单位： | 广东工业大学,实验教学部,广东,广州,510006 |
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| 摘 要： | 介绍了一种新的测量激光波长的方法,并与传统的迈克耳孙干涉仪测量的结果进行了比较.我们对汞光和氦氖激光在乙醇(97%)形成的超声光栅中的衍射光谱进行了测量研究,首先利用汞光数据计算得到了超声波在乙醇中的传播速度,并分析了温度对结果的影响,然后利用超声波波速计算了氦氖激光的波长,得到的结果与标准值相比的相对误差为0.55%.此方法操作简便,且有与迈克耳孙干涉仪可比的精度.
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| 关 键 词： | 超声光栅 声速 氦氖激光 |
The measurement of laser wavelength by ultrasonic grating |
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| YANG Yan-ting,WANG Min,ZHOU Yu-chang.The measurement of laser wavelength by ultrasonic grating[J].College Physics,2009,28(7). |
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| Authors: | YANG Yan-ting WANG Min ZHOU Yu-chang |
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| Institution: | Experiment Center;Guangdong University of Technology;Guangzhou;Guangdong 510006;China |
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| Abstract: | A new method is presented for measuring the laser wavelength.The experimental results are compared with those obtained by the classical Michelson interferometry.We analyze the diffraction spectra of the ultrasonic grating formed by mercury and He-Ne lasers through ethanol solution(97%).We study further the effect of temperature on the velocity of ultrasonic wave propagation that is first measured using mercury laser.The wavelength of He-Ne laser can be accordingly calculated from the velocity of ultrasonic ... |
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| Keywords: | ultrasonic diffraction grating ultrasonic velocity He-Ne laser |
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