Semiconductor laser module

Details Semiconductor laser module Semiconductor laser module

1998-10-21

2000-09-12

Ullah, Akm E.

Optical waveguides

With disengagable mechanical connector

Optical fiber to a nonfiber optical device connector

G02B 636

Patent

active

061167924

ABSTRACT:
In a semiconductor laser module (10) in which the upper surface of a base board (14) comprises two surfaces, one surface acting as the upper surface of a lens mount portion (14b) onto which a lens (16) is fixed by YAG laser welding, and the other surface acting as the upper surface of a laser mount portion (14a), the upper surface of the lens mount portion (14b) being set to be lower in height than the upper surface of the laser mount portion (14a) by the length corresponding to the radius of the lens (16), the lens mount portion (14b) comprises upper and lower layer portions (14u, 14d) formed of materials which are different in thermal conductivity, and the lower layer portion (14d) is formed of the same material as the laser mount portion (14a) of the base board (14). The material of the upper layer portion (14u) of the lens mount portion (14b) is lower in thermal conductivity than the material of the lower layer portion (14d). The upper layer portion (14u) may be formed of iron-nickel-cobalt alloy, and the lower layer portion (14d) may be formed of copper-tungsten alloy.

REFERENCES:
patent: 5848210 (1998-12-01), Kimura
patent: 5974065 (1999-10-01), Kanda

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