Coherent light generators – Particular beam control device – Tuning
Patent
1991-09-26
1992-11-03
Scott, Jr, . Leon
Coherent light generators
Particular beam control device
Tuning
372 31, 372102, 372 92, 372 38, H01S 313
Patent
active
051611651
ABSTRACT:
An etalon stabilized external cavity laser. The present invention is embodied in an external cavity laser and utilizes a servo circuit to adjust the angle of an intra-cavity etalon to suppress multimode operation of the laser. The servo circuit employs a diode detector to detect a beat frequency that occurs during multimode laser operation. The output from the diode is amplified, compared and integrated to produce a control signal. This signal is used to control the angle of the etalon and thereby suppress the multimode operation of the laser.
REFERENCES:
patent: 4103254 (1978-07-01), Chikami
patent: 4504950 (1985-03-01), AuYeung
patent: 4622672 (1986-11-01), Coldren et al.
patent: 4942583 (1990-07-01), Nazarathy et al.
patent: 4995050 (1991-02-01), Waarts et al.
patent: 5077747 (1991-12-01), Hemmer et al.
N. A. Olsson et al., "Performance Characteristics of 1.5-.sup.- m External cavity Semiconductor Laser for Coherent Optical Communication", Apr. '87, Journal of Lightwave Technology, pp. 510-515.
Richard E. Wagner et al., "Heterodyne Lightwave System: Moving towards Commercial Use", Nov. '90, IEEE LCS, pp. 28-35.
Paul S. Henry, "Lightwave Primer", Dec. '85, IEEE Journal of Quantum Electronics, vol. QE-21, No. 12, pp. 1862-1878.
Richard A. Linke et al., "Coherent optical detection: a thousand calls on one circuit", Feb. '87, IEEE Spectrum, pp. 52-57.
A. Olsson et al., "Electrooptically Tuned External-Cavity CW Semiconductor Laser and FM Optical Communications", Oct. '79, IEEE Journal of Quantum Electronics, vol. QE-15, No. 10, pp. 1085-1088.
M. Ohtsu, et al., "A simple Interferometric Method For Monitoring Mode Hopping in Tunable External-Cavity Semiconductor Lasers", Jan. '89, Journal of Lightwave Technology, vol. 7, No. 1, pp. 68-76.
Boyle Howard R.
Hewlett--Packard Company
Scott, Jr . Leon
LandOfFree
Multimode stabilized external cavity 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 Multimode stabilized external cavity laser, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multimode stabilized external cavity laser will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2056054