Stabilized local oscillator frequency for heterodyne laser sensors
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 17, 1992
Grant Date -
N/A
app pub date -
Jan 3, 1991
filing date -
Jan 3, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A stabilized local oscillator frequency for heterodyne laser sensors comped of an acousto-optic crystal which provides a constant frequency offset f.sub.1, to a portion of laser transmitter power at frequency f.sub.0, for injection locking a separate local oscillator connected to a detector which simultaneously mixes f.sub.1 with the return signal f.sub.0 from a target. The detector outputs the difference frequency between f.sub.0 -f.sub.1 which is processed for the desired information. Proper local oscillator tuning is maintained through the use of a piezo-electric translator regulating the axial length of the local oscillator.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully