公开(公告)号：WO1991007787A1

公开(公告)日：1991-05-30

申请号：PCT/US1990003805

申请日：1990-07-02

Applicant: BELL COMMUNICATIONS RESEARCH, INC.

Inventor： BELL COMMUNICATIONS RESEARCH, INC. ,  ZAH, Cheung-en

IPC: H01S03/08

CPC classification number: H01S5/50 ,  H01S5/10 ,  H01S5/1064 ,  H01S5/1085

Abstract: The effective modal reflectivity of angled antireflection-coated facets (18, 16) of a traveling-wave laser amplifier is significantly reduced by flaring the waveguiding portion (22, 24) of the amplifier in the immediate vicinity of the facets. In this way, low-reflectivity facets are achieved with simple low-cost antireflection coatings (19, 17), thereby providing economical amplifiers characterized by wide bandwidth and high output saturation power.