公开(公告)号：JP2003035849A

公开(公告)日：2003-02-07

申请号：JP2002168470

申请日：2002-06-10

Applicant: Spectra-Physics Laser Diode Systems Inc ,  スペクトラ−フイジクス・レーザ・ダイオード・システムズ・インコーポレイテツド

Inventor： BAER THOMAS M ,  KEIRSTEAD MARK S

IPC: G02B6/32 ,  G02B6/42 ,  H01S3/094 ,  H01S3/0941 ,  H01S5/40

CPC classification number: G02B6/425 ,  G02B6/4206 ,  H01S3/094053 ,  H01S3/0941 ,  H01S5/4012 ,  H01S5/4025

Abstract: PROBLEM TO BE SOLVED: To provide a means suitable for coupling a multimode optical fiber with a low NA(numerical aperture) with a laser diode. SOLUTION: Before butt-coupling the output of the laser diode with an optical fiber, a small diameter multimode optical fiber having a low numerical aperture (i.e., 0.1) is used as a microlens to collimate the output emissions of the laser diode. The optical fiber used as the microlens is selected so that its diameter is roughly equal to the diameter of the fiber to be coupled with the laser diode. The collimation is performed in the high NA direction of the output of the laser diode. The output of a bundle of butt-coupled optical fibers can be used for pumping a laser system.

Abstract translation: 要解决的问题：提供适合于用激光二极管耦合具有低NA（数值孔径）的多模光纤的装置。 解决方案：在将激光二极管的输出与光纤对接之前，使用具有低数值孔径（即，0.1）的小直径多模光纤作为微透镜来校准激光二极管的输出发射。 选择用作微透镜的光纤，使得其直径大致等于与激光二极管耦合的光纤的直径。 在激光二极管的输出的高NA方向进行准直。 一对对接光纤的输出可用于泵浦激光系统。