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Title: Polarization feedback laser stabilization

Abstract

A system for locking two Nd:YAG laser oscillators includes an optical path for feeding the output of one laser into the other with different polarizations. Elliptical polarization is incorporated into the optical path so that the change in polarization that occurs when the frequencies coincide may be detected to provide a feedback signal to control one laser relative to the other. 4 figs.

Inventors:
;
Publication Date:
Research Org.:
Sandia National Labs., Albuquerque, NM (USA)
OSTI Identifier:
6772423
Alternate Identifier(s):
OSTI ID: 6772423
Patent Number(s):
PATENTS-US-A6101535
Assignee:
SNL; EDB-88-178975
DOE Contract Number:
AC04-76DP00789
Resource Type:
Patent
Resource Relation:
Other Information: Portions of this document are illegible in microfiche products
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; CONTROL SYSTEMS; DESIGN; LASERS; FEEDBACK; FLOWSHEETS; FREQUENCY CONTROL; FREQUENCY MIXING; INVENTIONS; NUMERICAL DATA; POLARIZATION; CONTROL; DATA; DIAGRAMS; INFORMATION 420300* -- Engineering-- Lasers-- (-1989)

Citation Formats

Esherick, P., and Owyoung, A.. Polarization feedback laser stabilization. United States: N. p., 1987. Web.
Esherick, P., & Owyoung, A.. Polarization feedback laser stabilization. United States.
Esherick, P., and Owyoung, A.. Mon . "Polarization feedback laser stabilization". United States. doi:.
@article{osti_6772423,
title = {Polarization feedback laser stabilization},
author = {Esherick, P. and Owyoung, A.},
abstractNote = {A system for locking two Nd:YAG laser oscillators includes an optical path for feeding the output of one laser into the other with different polarizations. Elliptical polarization is incorporated into the optical path so that the change in polarization that occurs when the frequencies coincide may be detected to provide a feedback signal to control one laser relative to the other. 4 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Sep 28 00:00:00 EDT 1987},
month = {Mon Sep 28 00:00:00 EDT 1987}
}
  • A system for locking two Nd:YAG laser oscillators includes an optical path for feeding the output of one laser into the other with different polarizations. Elliptical polarization is incorporated into the optical path so that the change in polarization that occurs when the frequencies coincide may be detected to provide a feedback signal to control one laser relative to the other.
  • This patent describes a system for locking two Nd:YAG laser oscillators includes an optical path for feeding the output of one laser into the other with different polarizations. Elliptical polarization is incorporated into the optical path so that the change in polarization that occurs when the frequencies coincide may be detected to provide a feedback signal to control one laser relative to the other.
  • We have achieved reliable operation of a tunable, single-mode injection-seeded Nd:YAG laser that incorporates a novel feedback scheme to maintain the required match between the master- and slave-resonator cavity lengths. The reliability of the system is illustrated by both fluorescence excitation and sub-Doppler polarization spectra of I/sub 2/ taken with the second-harmonic output of the slave laser while temperature tuning the injected frequency from the master oscillator. These spectra should provide extremely useful for long-term stabilization of the system to an absolute frequency reference.
  • A feedback stabilization system for pulse single-frequency tunable lasers having an excited laser medium contained within an adjustable length cavity and producing a laser beam through the use of an optical element, including detection of angular deviation in the output laser beam, and generating an error signal based thereon. The error signal can be integrated and amplified and then applied as a correcting signal to a piezoelectric transducer mounted on a mirror of the laser cavity for controlling the cavity length.
  • A feedback stabilization system for pulse single longitudinal mode tunable lasers having an excited laser medium contained within an adjustable length cavity and producing a laser beam through the use of an internal dispersive element, including detection of angular deviation in the output laser beam resulting from detuning between the cavity mode frequency and the passband of the internal dispersive element, and generating an error signal based thereon. The error signal can be integrated and amplified and then applied as a correcting signal to a piezoelectric transducer mounted on a mirror of the laser cavity for controlling the cavity length.