Title:
【発明の名称】レーザ
Document Type and Number:
Japanese Patent JPH09508239
Kind Code:
A
Abstract:
A high power monomode laser arrangement is able to manipulate the output from a high power laser diode array pump source 3 using a computer-generated hologram 4 to launch a high proportion of the pump source light into a multimode fiber portion including in input reflector 6. A monomode fiber portion 2 with the same fundamental-mode spot size as the multimode fiber portion 1 is optically coupled to the multimode fiber portion and includes a reflector 5 which reflects only the fundamental mode of the multimode and monomode fiber portions. The fundamental mode reflection forced by the monomode fiber portion 2 provides the feedback necessary to force predominantly fundamental mode oscillation which enables stimulated emission in only the fundamental mode.
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Inventors:
Wyatt, Richard
Armitage, Jonathan Richard
Armitage, Jonathan Richard
Application Number:
JP51994295A
Publication Date:
August 19, 1997
Filing Date:
January 27, 1995
Export Citation:
Assignee:
British Telecommunications Public Limited Company
International Classes:
H01S3/06; H01S3/067; H01S3/063; H01S3/07; H01S3/094; (IPC1-7): H01S3/06
Attorney, Agent or Firm:
Takehiko Suzue (4 outside)