公开(公告)号：US20130243016A1

公开(公告)日：2013-09-19

申请号：US13989409

申请日：2011-11-26

申请人： Zhiyong Wang ,  Wenbin Qin ,  Yinhua Cao ,  Jingjing Dai ,  Tingwu Ge

发明人： Zhiyong Wang ,  Wenbin Qin ,  Yinhua Cao ,  Jingjing Dai ,  Tingwu Ge

IPC分类号： H01S3/00

CPC分类号： H01S3/0064 ,  B23K26/0613 ,  B23K26/066 ,  B23K26/704 ,  H01S3/2383

摘要： A laser anti-reflection device includes a polarizing beam splitter, a λ/4 wave plate and an absorber disposed in an outgoing light path of a laser emitting linearly polarized light with a wavelength of λ. The linearly polarized light from the laser passes through the polarizing beam splitter and the λ/4 wave plate in turn to become a circularly polarized light beam. Part of the circularly polarized light beam is then reflected by a workpiece to be processed along the original light path and passes the λ/4 wave plate to become a linearly polarized light beam with a polarization direction vertical to that of the outgoing linearly polarized light beam. The vertical polarized beam passes the polarizing beam splitter, deviates from the light path of the outgoing linearly polarized light beam and reaches the absorber. The laser anti-reflection device prevents reflected light from damaging the laser from high power lasers.

摘要翻译： 激光防反射装置包括偏振分束器，λ/ 4波片和设置在发射波长为λ的线偏振光的激光的出射光路中的吸收体。 来自激光器的线偏振光依次通过偏振分束器和λ/ 4波片，成为圆偏振光束。 圆偏振光束的一部分然后沿着原始光路被待处理的工件反射，并使λ/ 4波片成为具有垂直于出射直线偏振光束的偏振方向的线偏振光束 。 垂直偏振光束通过偏振分束器，偏离出射线偏振光束的光路并到达吸收体。 激光防反射装置防止反射光从大功率激光器损坏激光。

公开(公告)号：US08937977B2

公开(公告)日：2015-01-20

申请号：US13989409

申请日：2011-11-26

申请人： Zhiyong Wang ,  Wenbin Qin ,  Yinhua Cao ,  Jingjing Dai ,  Tingwu Ge

发明人： Zhiyong Wang ,  Wenbin Qin ,  Yinhua Cao ,  Jingjing Dai ,  Tingwu Ge

IPC分类号： H01S3/13 ,  H01S3/00 ,  B23K26/06 ,  B23K26/30 ,  H01S3/23

CPC分类号： H01S3/0064 ,  B23K26/0613 ,  B23K26/066 ,  B23K26/704 ,  H01S3/2383

摘要： A laser anti-reflection device includes a polarizing beam splitter, a λ/4 wave plate and an absorber disposed in an outgoing light path of a laser emitting linearly polarized light with a wavelength of λ. The linearly polarized light from the laser passes through the polarizing beam splitter and the λ/4 wave plate in turn to become a circularly polarized light beam. Part of the circularly polarized light beam is then reflected by a workpiece to be processed along the original light path and passes the λ/4 wave plate to become a linearly polarized light beam with a polarization direction vertical to that of the outgoing linearly polarized light beam. The vertical polarized beam passes the polarizing beam splitter, deviates from the light path of the outgoing linearly polarized light beam and reaches the absorber. The laser anti-reflection device prevents reflected light from damaging the laser from high power lasers.

摘要翻译： 激光防反射装置包括偏振分束器，λ/ 4波片和设置在发射波长为λ的线偏振光的激光的出射光路中的吸收体。 来自激光器的线偏振光依次通过偏振分束器和λ/ 4波片，成为圆偏振光束。 圆偏振光束的一部分然后被沿着原始光路的待处理的工件反射，并使λ/ 4波片成为具有垂直于出射线偏振光束的偏振方向的线偏振光束 。 垂直偏振光束通过偏振分束器，偏离出射线偏振光束的光路并到达吸收体。 激光防反射装置防止反射光从大功率激光器损坏激光。