System and method for improving laser power and...

Details System and method for improving laser power and... System and method for improving laser power and...

2006-02-14

2006-02-14

Paladini, Albert W. (Department: 2125)

Data processing: generic control systems or specific application

Specific application, apparatus or process

Product assembly or manufacturing

C250S205000

Reexamination Certificate

active

06999838

ABSTRACT:
A system and method of stabilizing laser output levels includes a laser (10), an injection circuit for injecting a radio frequency waveform, and a control circuit for energizing and stabilizing the laser. The radio frequency waveform injected by the injection circuit has a high duty cycle to maintain high output power while providing a stable multimode spectrum. A back facet photodiode sensor (102) detects radiation emitted from a back facet semiconductor laser (101) and provides a feedback signal to the control circuit (41) for maintaining the laser output power. The response of the photodiode is not fast enough to track intensity variations due to the RF waveform, and thus provides feedback to the control circuit (41) only when there is a substantial need to adjust laser power.

REFERENCES:
patent: 4972425 (1990-11-01), Braski
patent: 5077748 (1991-12-01), Kozlovsky et al.
patent: 5175722 (1992-12-01), Minami et al.
patent: 5197059 (1993-03-01), Minami et al.
patent: 5386409 (1995-01-01), Yokota et al.
patent: 5422900 (1995-06-01), Reele et al.
patent: 5495464 (1996-02-01), Fujikawa et al.
patent: 5809049 (1998-09-01), Schaefer et al.
patent: 5970078 (1999-10-01), Walker
patent: 6049073 (2000-04-01), Roddy et al.
patent: 6226309 (2001-05-01), Tsubota

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