| 基于光线追迹的单频激光多重回馈效应研究 |
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| 引用本文： | 曾召利,杜双格,张晓军,刘渊声,尚永兵,李维娜,张敏.基于光线追迹的单频激光多重回馈效应研究[J].应用光学,2015,36(4):639-643. |
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| 作者姓名： | 曾召利 杜双格 张晓军 刘渊声 尚永兵 李维娜 张敏 |
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| 作者单位： | 1.第四军医大学 生物医学工程系物理教研室,陕西 西安 710032 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 提出一种基于非准直平凹回馈腔的单频激光多重回馈光线追迹模型，采用该模型阐明了单频激光多重回馈效应的产生机理，分析了多重回馈高分辨率条纹的特性，明确了影响多重回馈条纹形状的主要因素，包括回馈镜的倾角、曲率半径、反射率以及回馈外腔长等，获得了回馈镜在不同倾角时的有效回馈阶次及其耦合系数。光线追迹分析与实验结果表明:当回馈镜倾斜角为1.7时，多重回馈效应会产生调制幅度均匀、没有大包络的高分辨率回馈条纹，每个条纹的分辨率可达/50。
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| 关 键 词： | 激光回馈 多重回馈 非准直外腔 单频激光 |
Single frequency laser multiple feedback effects based on ray tracing method |
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| Zeng Zhaoli,Du Shuangge,Zhang Xiaojun,Liu Yuansheng,Shang Yongbing,Li Weina,Zhang Min.Single frequency laser multiple feedback effects based on ray tracing method[J].Journal of Applied Optics,2015,36(4):639-643. |
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| Authors: | Zeng Zhaoli Du Shuangge Zhang Xiaojun Liu Yuansheng Shang Yongbing Li Weina Zhang Min |
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| Institution: | 1.Department of Physics,School of Biomedical Engineering,Fourth Military Medical University,Xi’an 710032,China |
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| Abstract: | A ray tracing model of multiple optical feedback with asymmetric plane-concave cavity was presented. With this model, the generation mechanism of high resolution fringes in single frequency laser multiple feedback was elaborated. Also, the affecting factors of fringe-shape were analyzed, including tilted angle, curvature, reflectivity of feedback mirror and length of external cavity. In addition, the effective feedback order and coupling efficiency of feedback beams with different tilted angles were obtained. Theory analysis and experimental results show that the high-resolution feedback fringes without envelopment can be obtained when the tilted angle is 1.7. In particular, the resolution of feedback fringes can be /50, which is very important to explore high-precision displacement measurement system. |
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| Keywords: | laser feedback multiple feedback asymmetric external cavity single frequency laser |
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