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Eigenpolarization theory of monolithic nonplanar ring oscillatorsDiode-laser-pumped monolithic nonplanar ring oscillators (NPROs) in an applied magnetic field can operate as unidirectional traveling-wave lasers. The diode laser pumping, monolithic construction, and unidirectional oscillation lead to narrow linewidth radiation. Here, a comprehensive theory of the eigenpolarizations of a monolithic NPRO is presented. It is shown how the properties of the integral optical diode that forces unidirectional operation depend on the choice of the gain medium, the applied magnetic field, the output coupler, and the geometry of the nonplanar ring light path. Using optical equivalence theorems to gain insight into the polarization characteristics of the NPRO, a strategy for designing NPROs with low thresholds and large loss nonreciprocities is given. An analysis of the eigenpolarizations for one such NPRO is presented, alternative optimization approaches are considered, and the prospects for further reducing the linewidths of these lasers are briefly discussed.
Document ID
19890048406
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Nilsson, Alan C.
(Stanford Univ. CA, United States)
Gustafson, Eric K.
(Stanford Univ. CA, United States)
Byer, Robert L.
(Stanford University CA, United States)
Date Acquired
August 14, 2013
Publication Date
April 1, 1989
Publication Information
Publication: IEEE Journal of Quantum Electronics
Volume: 25
ISSN: 0018-9197
Subject Category
Lasers And Masers
Accession Number
89A35777
Funding Number(s)
CONTRACT_GRANT: NAG1-839
Distribution Limits
Public
Copyright
Other

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