Laser module and production process thereof

Coherent light generators – Short wavelength laser

Reexamination Certificate

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Details

C372S043010

Reexamination Certificate

active

07110425

ABSTRACT:
In a disclosed laser module, a usage amount of organic adhesive is set to no more than 1.0 g/ml. Thus, an equilibrium density of outgas components from the adhesive after an air removal treatment is less than 1000 ppm. In another laser module, a heat sink at which a semiconductor laser element is adhered on a submount, an electrode terminal wire-connected with the laser element, a photodiode wire-connected with the electrode terminal, and a zeolite adsorbent are fixedly provided on a stem. These are ring-welded in a container in a dry air atmosphere (80% nitrogen, 20% oxygen). In still another laser module, sixteen multiplexed lasers are disposed in a container. The container is connected with an air circulation apparatus, which is provided with a filter for removing contaminants, a rotary pump for circulating inert gas, and a valve for controlling replenishment of the gas.

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patent: 5629952 (1997-05-01), Bartholomew et al.
patent: 6546030 (2003-04-01), Sasao
patent: 2002/0090172 (2002-07-01), Okazaki et al.
patent: 11-54852 (1999-02-01), None
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patent: 11-167132 (1999-06-01), None
patent: 2001-177166 (2001-06-01), None
patent: 2002-202442 (2002-07-01), None

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