| LD注入调频扫描系统研究 |
| |
| 引用本文： | 董翔宇,郑刚,李孟超.LD注入调频扫描系统研究[J].光学仪器,2006,28(6):73-77. |
| |
| 作者姓名： | 董翔宇 郑刚 李孟超 |
| |
| 作者单位： | 上海理工大学光学与电了信息工程学院,上海,200093;上海理工大学光学与电了信息工程学院,上海,200093;上海理工大学光学与电了信息工程学院,上海,200093 |
| |
| 摘 要： | 为了减小扫描系统测量误差,可以利用半导体激光器注入式调频装置和光栅来建立扫描系统。通过改变注入电流来改变半导体激光器的输出光频,使输出光入射在光栅上,随着频率的改变,衍射光的衍射角会发生改变,进而衍射光点的位置发生改变,从而实现无机械光点扫描,能够消除扫描测量过程中机械抖动和振动带来的误差。
|
| 关 键 词： | LD光频调制 衍射光栅 PSD 迈克尔逊干涉仪 |
| 文章编号： | 1005-5630(2006)06-0073-05 |
| 收稿时间： | 2006/3/10 |
| 修稿时间： | 2006年3月10日 |
Research of scanning system with frequency-modulated LD |
| |
| DONG Xiang-yu,ZHENG Gang,LI Meng-chao.Research of scanning system with frequency-modulated LD[J].Optical Instruments,2006,28(6):73-77. |
| |
| Authors: | DONG Xiang-yu ZHENG Gang LI Meng-chao |
| |
| Abstract: | In order to reduce the measurement error of scanning system,the scanning system can be designed with frequency-modulated laser diode and a grating.The frequency of the beam can be easily modulated by modulation of the laser diode injection current.When the beam reaches to a grating,the diffraction angle will be changed with the frequency modulation,and then the light-spot′s position will be different.The diffracted ray can be used to scan the object without any mechanical movement and the measurement error will be reduced. |
| |
| Keywords: | frequency modulation of laser diode diffraction grating PSD Michelson interferometer |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《光学仪器》浏览原始摘要信息 |
|
点击此处可从《光学仪器》下载全文 |
|
