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Research on Beam Characteristics of Semiconductor Laser

WANG Xiao-ni, ZHU Lin-quan (Dept. of Information Engineering of North University of China, Taiyuan 030051, China)  
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.
【CateGory Index】: TN248.4
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