Coherent light generators – Particular resonant cavity – Mirror support or alignment structure
Patent
1989-04-24
1990-07-03
Scott, Jr., Leon
Coherent light generators
Particular resonant cavity
Mirror support or alignment structure
372 98, 372 38, 372 33, H01S 308
Patent
active
049397397
ABSTRACT:
A servo alignment method and apparatus for maintaining laser beam alignment. An operating parameter of the laser (such as output beam power) is measured, and error signals are generated from the measured operating parameter signal for controlling the laser beam alignment. In one class of embodiments, modulation signals are supplied to an intra-cavity component of a laser system to modulated the beam path. The beam path may be modulated by reciprocating a laser resonator mirror about a mirror axis or two substantially orthogonal mirror axes. In the latter case, the mirror may be vibrated about the axes either alternately (first about one axis and then about the other) or simultaneously. In embodiments in which an intra-cavity component is modulated, the laser operating parameter is measured during such modulation, the measured operating parameter signal is demodulated (preferably by multiplication in a mixer with a selected frequency component of the modulation signal currently being asserted), and error signals are generated from the demodulated signal for controlling the laser beam alignment.
REFERENCES:
patent: 4434490 (1984-02-01), Kavaya et al.
patent: 4592058 (1986-05-01), Mongeon et al.
patent: 4660206 (1987-04-01), Halmos et al.
patent: 4845716 (1989-07-01), Poehler
Hobart James L.
Mefferd Wayne S.
Peuse Bruce
Coherent Inc.
Jr. Leon Scott
LandOfFree
Laser alignment servo method and apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Laser alignment servo method and apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Laser alignment servo method and apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1896494