| 自混合干涉信号的位相调制 |
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| 引用本文： | 沈赟华,王鸣,郭冬梅.自混合干涉信号的位相调制[J].光学技术,2007,33(4):526-529. |
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| 作者姓名： | 沈赟华 王鸣 郭冬梅 |
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| 作者单位： | 南京师范大学物理科学与技术学院,江苏省光电技术重点实验室,南京,210097 |
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| 基金项目： | 国家自然科学基金资助项目(50375074)，高等学校博士学科点专项科研基金资助项目(20050319007) |
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| 摘 要： | 自混合干涉因其结构简单、紧凑、稳定且易准直等特点而被广泛应用于测量领域。从自混合干涉和电光晶体调制位相的基本原理出发,通过将电光晶体引入自混合干涉外腔调制,研究了自混合干涉测量中电光晶体的位相调制性能。实验证明,利用晶体的调制性能对自混合干涉信号进行位相调制,在很宽的频率范围内都能保证很高的调制精度,测量误差小,具有很好的应用前景。
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| 关 键 词： | 激光技术 位相调制 自混合干涉 电光晶体 |
| 收稿时间： | 2006/6/12 |
Phase modulation applied in self-mixing interferometry |
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| SHEN Yun-hua,WANG Ming,GUO Dong-mei.Phase modulation applied in self-mixing interferometry[J].Optical Technique,2007,33(4):526-529. |
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| Authors: | SHEN Yun-hua WANG Ming GUO Dong-mei |
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| Abstract: | Self-mixing interferometry has widely been used in metrology because of the inherent simplicity, compactness and as well as the self-aligning. From the principles of self-mixing interferometry and phase modulation using electro-optic crystals, an electro-optic modulator in the external cavity is put, and sinusoidal phase modulation using electro-optic crystal in self-mixing interference is analyzed. It is proved that implementing phase modulation to laser beams using electro-optic crystals can obtain good measurement accuracy over a wide frequency rage, and shows good applications in the future. |
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| Keywords: | laser technology phase modulation self-mixing interferometry electro-optic crystal |
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