Beam-stacking element for diode-laser bar stack

OPT OpenIR > 半导体激光器专利数据库

	Beam-stacking element for diode-laser bar stack
其他题名	Beam-stacking element for diode-laser bar stack
	CAPRARA, ANDREA; JERMAN, JOHN, H.
	2015-04-02
专利权人	COHERENT, INC.
公开日期	2015-04-02
授权国家	世界知识产权组织
专利类型	发明申请
摘要	Optical apparatus (40) includes a diode-laser bar stack (42) having N fast-axis stacked diode-laser bars (17) cooperative with a parallel sided transparent stacking plate (50). The stacking plate receives N original beams (44) from the N diode-laser bars and converts the N beams to 2N fast-axis stacked beams (44A, 44B) having one-half of a width the original beams and one-half of a fast-axis spacing between the original beams. The transparent plate has parallel surfaces (50A,50B) with the surfaces being tilted in both perpendicular directions versus the incoming laser beams (44). The second surface (50B) is coated with a reflective coating (66) that reflects half of the width of the incoming beams towards reflective coating stripes (60) on the first surface (50A) thereby interleaving the reflected beams (44B) between the remainder of the incoming beams (44A) in order to increase the filling factor of the overall laser beam.
其他摘要	光学设备（40）包括二极管激光条堆叠（42），其具有与平行侧面透明堆叠板（50）配合的N个快轴堆叠二极管激光条（17）。堆叠板从N个二极管激光器条接收N个原始光束（44），并将N个光束转换成2N个快轴堆叠光束（44A，44B），其具有原始光束的一半宽度和一半的光束。原始光束之间的快轴间距。透明板具有平行表面（50A，50B），其表面相对于入射激光束（44）在两个垂直方向上倾斜。第二表面（50B）涂覆有反射涂层（66），该反射涂层将入射光束的一半宽度反射到第一表面（50A）上的反射涂层条纹（60），从而在其余部分之间交错反射光束（44B）为了增加整个激光束的填充系数，输入光束（44A）的入射光束（44A）。
主权项	Optical apparatus, comprising: a plurality N of diode laser-bars characterized as having a slow-axis in a length direction, a fast-axis perpendicular to the slow-axis, and a propagation-axis perpendicular to the slow-axis and the fast-axis, the diode-laser bars stacked one above another in the fast-axis direction with a predetermined pitch P therebetween; a plurality N of fast-axis collimating lenses one for each of the diode-laser bars and a plurality N of slow-axis collimating lens arrays, one for each of the diode- laser bars, the diode-lasers bars, fast-axis collimating lenses, and slow-axis collimating lenses providing a plurality N of combined-radiation beams propagating one above another in the fast-axis direction parallel to the propagation-axis direction, each beam having a width W in the slow-axis direction; a transparent plate in the path of the combined radiation beams, the transparent plate having a thickness and first and second opposite surfaces parallel to each other, the surfaces inclined to the fast-axis direction at a first angle, and inclined to the slow- axis direction at a second angle, with the first surface of the plate facing the diode- laser bar stack, and with first and second reflective coatings partly covering respectively the first and second surfaces of the plate; and wherein the first and second reflective coatings are configured and the thickness of the plate and the first and second angles are selected such that the plate transmits 2N combined beams propagating one above another in the fast-axis direction parallel to each other in the propagation-axis direction, each beam having a width less than W in the slow-axis direction, and with the beams spaced apart in the fast-axis direction by a distance of about P/2.
申请日期	2014-09-19
专利号	WO2015047918A1
专利状态	未确认
申请号	PCT/US2014/056683
公开（公告）号	WO2015047918A1
IPC 分类号	H01S5/40 \| G02B19/00 \| G02B27/09 \| H01S5/00
专利代理人	STALLMAN, MICHAEL, A. ET AL.
代理机构	-
文献类型	专利
条目标识符	http://ir.opt.ac.cn/handle/181661/67126
专题	半导体激光器专利数据库
作者单位	COHERENT, INC.
推荐引用方式 GB/T 7714	CAPRARA, ANDREA,JERMAN, JOHN, H.. Beam-stacking element for diode-laser bar stack. WO2015047918A1[P]. 2015-04-02.