Low cost means of modulating a laser

Details Low cost means of modulating a laser Low cost means of modulating a laser

2005-03-15

2005-03-15

Wong, Don (Department: 2828)

Coherent light generators

Particular beam control device

Modulation

C372S045013, C372S029015

Reexamination Certificate

active

06868101

ABSTRACT:
The present invention discusses a modulation method and apparatus for modulating an extended-cavity laser (211). The method and apparatus (200-203) entails the use of each pulse in an input modulating pulse train as the trigger for the generation of a brief or “notch” pulse, i.e. a pulse that briefly diminishes the normal drive current. Each “notch” pulse is used to drive the semiconduct (211) embedded in an extended cavity with a current that flows opposite to its normal drive current. This serves to diminish the inverted charge-carrier population essential to lasing action, so the laser output falls sharply in a form of amplitude modulation. The invention also discloses a simple, miniaturized means (372, 352, 312) of micropositioning, based on the differential rotation of nested conical plugs, that can serve to couple the semiconductor laser to the cavity.

REFERENCES:
patent: 4612555 (1986-09-01), Hongou et al.
patent: 4872080 (1989-10-01), Hentschel et al.
patent: 5007062 (1991-04-01), Chesnoy
patent: 5231683 (1993-07-01), Hockaday et al.
patent: 5315436 (1994-05-01), Lowenhar et al.
patent: 5337323 (1994-08-01), Rokugawa
patent: 5659560 (1997-08-01), Ouchi et al.
patent: 5724164 (1998-03-01), Lowenhar

Affiliated with

Also associated with

Rating

Low cost means of modulating a laser does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Low cost means of modulating a laser, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Low cost means of modulating a laser will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3440824