Semiconductor laser ageing method

A semiconductor and laser technology, applied in the field of semiconductor laser aging detection methods and the equipment used, can solve the problems of aging, LD overcurrent aging, affecting life and other problems
CN1619899AInactive Publication Date: 2005-05-25惠州市中科光电有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
惠州市中科光电有限公司
Publication Date
2005-05-25
Estimated Expiration
Not applicable · inactive patent

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Abstract

A multi-channel semiconductor laser aging method, the semiconductor laser diodes LD are installed one by one on the multi-channel LD test and aging fixture, and the fixture is connected with a multi-channel constant power control circuit equipped with a power supply and connected with a central analysis and control computer; The computer first tests the constant power resistor that matches a certain LD on the fixture, and then connects the power control circuit unit that matches the LD in the multi-channel constant power control circuit, so that the LD is in the same or similar condition as the actual working condition. Aging is carried out in an environment, and then the remaining LDs to be tested are subjected to the aforementioned steps one by one. Most of the equipment used in the present invention is the transformation of existing equipment, which makes the circuit of the equipment simpler, more reliable, and more convenient to operate. It can be aged only by connecting the power supply; the aging efficiency is high, and the aging result is more accurate and practical; It is free of debugging and works with constant power, so that the LD will not be damaged.
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Description

technical field

[0001] The invention relates to a semiconductor device detection method, in particular to a semiconductor laser aging detection method and equipment used therein. Background technique

[0002] The aging of semiconductor lasers (hereinafter referred to as LD) is a production inspection process that manufacturers must go through before leaving the factory. Only LDs that have passed aging screening can ensure their quality and service life. There are many traditional laser aging screening methods and equipment, such as the U.S. "5172365" patent discloses a laser life testing system, and the applicant's patent application number "01129827.8" also discloses a laser aging screening equipment and screening method . The aging process scheme disclosed in these patents is: install the laser on a special fixture → adjust the potentiometer or change the value of the D / A conversion to change the working current of the laser → detect the power and other parameters of the ...

Claims

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