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Self-referenced octave-wide subharmonic GaP optical parametric oscillator centered at 3 μm and pumped by an Er-fiber laser

Abstract

We report an octave-wide mid-IR spectrum (2.3–4.8 μm) obtained from a subharmonic optical parametric oscillator (OPO) based on a newly developed nonlinear crystal, orientation-patterned gallium phosphide (OP-GaP), which was synchronously pumped by a femtosecond 1560 nm fiber laser. We proved that the octave-wide output is in the form of a single frequency comb. The observed f-to-2f frequency beats, originating directly from the OPO, can be used for self-referencing and phase locking of the pump laser comb with no need for supercontinuum generation. With an average output power of 30mW, this setup might be beneficial for a variety of spectroscopic applications in the mid-IR.

© 2017 Optical Society of America

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Corrections

Qitian Ru, Zachary E. Loparo, XiaoSheng Zhang, Sean Crystal, Subith Vasu, Peter G. Schunemann, and Konstantin L. Vodopyanov, "Self-referenced octave-wide subharmonic GaP optical parametric oscillator centered at 3  μm and pumped by an Er-fiber laser: erratum," Opt. Lett. 43, 21-21 (2018)
https://opg.optica.org/ol/abstract.cfm?uri=ol-43-1-21

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