| 激光光源波长调制法增强ESPI振动条纹 |
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| 引用本文： | 卢岚,李耀堂.激光光源波长调制法增强ESPI振动条纹[J].天津大学学报(自然科学与工程技术版),1995,28(2):221-226. |
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| 作者姓名： | 卢岚 李耀堂 |
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| 作者单位： | 天津大学，中科院广州电子技术研究所 |
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| 摘 要： | 提出时间平均振动条纹增强技术：对干涉系统作为相干光源的激光二极管进行波长调制，使之同时产生附加的相移和解相关散斑的综合效应，改善了ＥＳＰＩ时间平均振动条纹的质量。
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| 关 键 词： | 波长调制 ESPT 激光 光源 振动条纹 无损检测 |
WAVELENGTH MODULATION OF A LASER SOURCE FOR ENHANCING ESPI VIBRATION FRINGES |
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| Lu Lan.WAVELENGTH MODULATION OF A LASER SOURCE FOR ENHANCING ESPI VIBRATION FRINGES[J].Journal of Tianjin University(Science and Technology),1995,28(2):221-226. |
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| Authors: | Lu Lan |
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| Abstract: | ased on the wavelength modulation of a laser diode in the interferometer as a coherent light source,a technique for enhancing the time-average ESPI (electronic speckle pattern interferometry)vibration fringes is proposed.The wavelength- modulation of the laser diode gives rise to both the additional phase shift and the speckle pattern decorrelation and hence the time-average ESPI vibration fringe is improved. |
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| Keywords: | wavelength modulation phase shift speckle pattern decorrelation |
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