| 半导体激光器光束特性的研究 |
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| 引用本文： | 王小妮,朱林泉.半导体激光器光束特性的研究[J].红外,2007,28(3):28-30,48. |
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| 作者姓名： | 王小妮 朱林泉 |
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| 作者单位： | 中北大学信息与通信工程学院,山西,太原,030051;中北大学信息与通信工程学院,山西,太原,030051 |
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| 摘 要： | 研究半导体激光器(LD)的光束特性,并对其远场图像是近场图像的傅里叶变换进行了分析和推导。半导体激光器输出光束的方向性很差,发散角大致为10°-40°,并且在快轴和慢轴两个方向上相差较大,使得半导体激光器发射的激光束的束斑呈椭圆状,这对长距离传输很不利,因此本文还研究了光束的准直技术。
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| 关 键 词： | 半导体激光器 光束特性 傅里叶变换 光束准直 |
| 文章编号： | 1672-8785（2007）03-0028-03 |
| 修稿时间： | 2006-11-13 |
Research on Beam Characteristics of Semiconductor Laser |
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| WANG Xiao-ni,ZHU Lin-quan.Research on Beam Characteristics of Semiconductor Laser[J].Infrared,2007,28(3):28-30,48. |
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| Authors: | WANG Xiao-ni ZHU Lin-quan |
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| Affiliation: | Dept. of Information Engineering of North University of China, Taiyuan 030051, China |
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| Abstract: | In this paper, the beam characteristics of semiconductor lasers are studied and their far-field images which are the Fourier transform of near-field images are analyzed and deduced. The semiconductor laser beam has a bad directivity and its divergence angles in the fast and slow axes have a large difference which can causes the beam spot emitted by the semiconductor laser to be elliptical. This is disadvantage to its transmission in a long distance, so the collimating technology of the laser beam is also studied. |
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| Keywords: | semiconductor laser beam characteristics Fourier transform beam collimating |
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