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Single-longitudinal-mode diamond laser stabilization using polarization-dependent Raman gain

MetadataDetails
Publication Date2019-03-15
JournalOSA Continuum
AuthorsSoumya Sarang, Ondřej Kitzler, Oliver Lux, Zhenxu Bai, Robert J. Williams
InstitutionsDeutsches Zentrum für Luft- und Raumfahrt e. V. (DLR), Macquarie University
Citations25

We report a novel cavity feedback mechanism for stabilizing single-longitudinal-mode (SLM) operation of diamond Raman lasers. Polarization-dependent Raman gain and in-grown stress birefringence in diamond were investigated as sources for HƤnsch-Couillaud-type locking signals. The power range of SLM operation increased from 2.1 W to 7.2 W, compared to the free-running laser, for a simple standing-wave laser cavity without frequency-selective elements. Methods for further increasing power range and frequency stability are discussed.