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1. 发明授权

US6078603A Semiconductor diode laser, and method of manufacturing thereof 失效
标题翻译：半导体二极管激光器及其制造方法
公开(公告)号：US6078603A
公开(公告)日：2000-06-20
申请号：US988597
申请日：1997-12-11
申请人： Leo M. Weegels , Henricus M. De Vrieze , Maria H. C. Vermeulen-Hartjes
发明人： Leo M. Weegels , Henricus M. De Vrieze , Maria H. C. Vermeulen-Hartjes
IPC分类号： H01S5/065 , H01S5/02 , H01S5/028 , H01S5/062 , H01S5/10 , H01S5/32 , H01S3/19
CPC分类号： H01S5/06216 , H01S5/028 , H01S5/0658 , H01S5/10 , H01S5/1082
摘要： A diode laser is disclosed that is self-pulsating without an increase in the starting current or a decrease in the efficiency. A special coating on an end face of the laser comprises in order a first mirror, a medium having an optical thickness which is at least substantially equal to an integer number of times half the wavelength of the generated electromagnetic radiation, and a second mirror. The coating comprises exclusively materials which have a higher bandgap value than that which corresponds to the wavelength of the generated radiation, while the reflectivities of the mirrors and the deviation of the optical thickness of the medium with respect to an integer number of times half the emission wavelength are chosen such that the group velocity dispersion (GVD) adjacent the wavelength of the generated electromagnetic radiation is negative, and preferably a minimum. Pulse widening owing to pulses arising from automatic mode locking is no longer possible due to a sufficiently negative group velocity dispersion. A laser exhibiting stable self-pulsation is thus provided.
摘要翻译：公开了一种二极管激光器，其在不增加启动电流或效率降低的情况下是自脉动的。激光器端面上的特殊涂层按顺序包括第一反射镜，具有至少基本上等于产生的电磁辐射的波长的一半的光学厚度的介质和第二反射镜。涂层仅包括具有比对应于所产生的辐射的波长的带隙值更高的带隙值的材料，而反射镜的反射率和介质的光学厚度相对于发射的一半的整数倍的偏差选择波长，使得与所产生的电磁辐射的波长相邻的群速度色散（GVD）为负，优选为最小。由于自动模式锁定引起的脉冲，由于充分的负组速度色散，不再可能产生脉冲加宽。因此提供了表现出稳定的自脉动的激光。

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