公开(公告)号：US09742148B2

公开(公告)日：2017-08-22

申请号：US14572044

申请日：2014-12-16

Applicant: Redshift Systems Corporation

Inventor： Eugene Yi-Shan Ma ,  Charles M. Marshall

IPC: H01S5/068 ,  G02B5/28 ,  H01S5/14 ,  B82Y20/00 ,  H01S3/106 ,  H01S5/024 ,  H01S5/028 ,  H01S5/34

CPC classification number: H01S5/068 ,  B82Y20/00 ,  G02B5/288 ,  H01S3/1062 ,  H01S5/02446 ,  H01S5/028 ,  H01S5/141 ,  H01S5/3401

Abstract: A tunable laser has a solid state laser medium having an optical gain region and generates coherent radiation through a facet. A lens collects the coherent radiation and generates a collimated light beam. Components of an external cavity include a reflective surface and an optical filter, the reflective surface reflecting the collimated beam back to the lens and the laser medium, the optical filter positioned between the reflective surface and the lens and having two surfaces with a thermally tunable optical transmission band within the optical gain region of the laser medium. The optical filter (1) transmits a predominant portion of the collimated beam at a desired wavelength of operation, and (2) specularly reflects a remaining portion of the collimated beam from each surface, the collimated beam being incident on the optical filter such that the reflected collimated beams propagate at a non-zero angle with respect to the incident collimated beam.

公开(公告)号：US20150103851A1

公开(公告)日：2015-04-16

申请号：US14572044

申请日：2014-12-16

Applicant: Redshift Systems Corporation

Inventor： Eugene Yi-Shan Ma ,  Charles M. Marshall

IPC: H01S5/068 ,  H01S5/14

CPC classification number: H01S5/068 ,  B82Y20/00 ,  G02B5/288 ,  H01S3/1062 ,  H01S5/02446 ,  H01S5/028 ,  H01S5/141 ,  H01S5/3401

Abstract: A tunable laser has a solid state laser medium having an optical gain region and generates coherent radiation through a facet. A lens collects the coherent radiation and generates a collimated light beam. Components of an external cavity include a reflective surface and an optical filter, the reflective surface reflecting the collimated beam back to the lens and the laser medium, the optical filter positioned between the reflective surface and the lens and having two surfaces with a thermally tunable optical transmission band within the optical gain region of the laser medium. The optical filter (1) transmits a predominant portion of the collimated beam at a desired wavelength of operation, and (2) specularly reflects a remaining portion of the collimated beam from each surface, the collimated beam being incident on the optical filter such that the reflected collimated beams propagate at a non-zero angle with respect to the incident collimated beam.

Abstract translation: 可调谐激光器具有具有光学增益区域的固态激光介质，并通过刻面产生相干辐射。 透镜收集相干辐射并产生准直光束。 外部空腔的部件包括反射表面和滤光器，反射表面将准直光束反射回透镜和激光介质，光学滤光器位于反射表面和透镜之间，并且具有两个具有热可调光学的表面 在激光介质的光学增益区域内的传输带。 光学滤波器（1）以所需的操作波长发射准直光束的主要部分，（2）镜面反射来自每个表面的准直光束的剩余部分，准直光束入射到滤光器上，使得 反射的准直光束相对于入射准直光束以非零角度传播。