Single-emitter etendue aspect ratio scaler

OPT OpenIR > 半导体激光器专利数据库

	Single-emitter etendue aspect ratio scaler
其他题名	Single-emitter etendue aspect ratio scaler
	COBB, JOSHUA
	2015-12-23
专利权人	CORNING INCORPORATED
公开日期	2015-12-23
授权国家	欧洲专利局
专利类型	发明申请
摘要	An apparatus (12) emits a laser light beam with a first aspect ratio of etendue R1, wherein the optical invariant with respect to a first direction is less than half the optical invariant with respect to a second orthogonal direction. A first cylindrical lens (15) collimates the beam in the first direction. A second cylindrical lens (14) collimates the light beam in the second direction resulting in an elliptical beam shape (24). A bisecting reflective surface (72) has an edge (73) that splits the collimated beam into undeviated (42) and first deviated (44) beam paths (24a,24b). A folding reflective surface (76) redirects the first deviated beam path back toward the bisecting reflective surface, optically parallel with and displaced from the undeviated beam path with respect to the first direction. At least a portion of the redirected first deviated beam path passes the edge and combines with the undeviated path to form an output beam having a second aspect ratio of etendue R2 not equal to R1 and comprising the two cut beam parts (24a,24b) vertically stacked, for example, for optimized focusing into an optical fiber (20).
其他摘要	装置（12）发射具有第一纵横比R1的激光束，其中相对于第一方向的光学不变量小于相对于第二正交方向的光学不变量的一半。第一柱面透镜（15）沿第一方向准直光束。第二柱面透镜（14）沿第二方向准直光束，产生椭圆形光束形状（24）。二等分反射表面（72）具有边缘（73），该边缘将准直光束分成未偏转的（42）和第一偏离的（44）光束路径（24a，24b）。折叠反射表面（76）将第一偏离光束路径重新引导回二等分反射表面，与第一方向光学平行并偏离未偏转光束路径。重定向的第一偏离光束路径的至少一部分通过边缘并与未偏转的路径组合以形成输出光束，该输出光束具有不等于R1的光学扩展量R2的第二长宽比并且垂直地包括两个切割光束部分（24a，24b）例如，堆叠以优化聚焦到光纤（20）中。
主权项	An apparatus for providing a light beam comprising: a) a solid-state laser that is energizable to emit, along an optical axis, an input laser light beam that has a first aspect ratio of etendue R 1, wherein the optical invariant of the input laser light beam with respect to a first direction is less than half the optical invariant of the input laser light beam with respect to a second direction that is orthogonal to the first direction; b) a first cylindrical lens that is disposed to collimate the input laser light beam with respect to the first direction; c) a second cylindrical lens that is disposed to collimate the input laser light beam with respect to the second direction; d) a bisecting reflective surface having an edge that extends along the first direction and that is disposed along the optical axis to split the collimated laser light beam, with respect to the second direction, into an undeviated beam path from light on one side of the edge, and a first deviated beam path from light on the other side of the edge, wherein the undeviated and first deviated beam paths each contain emitted light from the solid-state laser; and e) a folding reflective surface disposed to redirect the first deviated beam path back toward the bisecting reflective surface, so that the redirected first deviated beam path is optically parallel with the undeviated beam path and is displaced from the undeviated beam path with respect to the first direction, wherein at least a first portion of the redirected first deviated beam path passes the edge and combines with the undeviated beam path to form an output beam having a second aspect ratio of etendue R 2 that is not equal to R
申请日期	2013-06-14
专利号	EP2667238A3
专利状态	申请中
申请号	EP2013172102
公开（公告）号	EP2667238A3
IPC 分类号	H01S5/00 \| G02B19/00 \| G02B27/09 \| H01S5/022
专利代理人	-
代理机构	GREENE, SIMON KENNETH
文献类型	专利
条目标识符	http://ir.opt.ac.cn/handle/181661/54439
专题	半导体激光器专利数据库
作者单位	CORNING INCORPORATED
推荐引用方式 GB/T 7714	COBB, JOSHUA. Single-emitter etendue aspect ratio scaler. EP2667238A3[P]. 2015-12-23.

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