System and method for improving laser power and...

Data processing: generic control systems or specific application – Specific application – apparatus or process – Product assembly or manufacturing

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

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

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

System and method for improving laser power and... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with System and method for improving laser power and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method for improving laser power and... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3694091

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.