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 ∼30 mW, this setup might be beneficial for a variety of spectroscopic applications in the mid-IR.

Publication Date

11-15-2017

Publication Title

Optics Letters

Volume

42

Issue

22

Number of Pages

4756-4759

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1364/OL.42.004756

Socpus ID

85033801436 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85033801436

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