Incoherently pumped continuous wave optical parametric oscillator broadened by non-collinear phasematching

TL;DR

This paper demonstrates a singly resonant optical parametric oscillator pumped by ASE that achieves a broad 230 nm spectral bandwidth through non-collinear phasematching, with potential for further spectral broadening.

Contribution

It introduces a novel non-collinear phasematching scheme in an ASE-pumped OPO to significantly broaden its spectral bandwidth.

Findings

Achieved 230 nm spectral bandwidth in OPO

Non-collinear phasematching enables spectral broadening

Calculations suggest further bandwidth enhancements possible

Abstract

In this paper, we report on a singly resonant optical parametric oscillator (OPO) pumped by an amplified spontaneous emission (ASE) source. The pump focusing conditions allow non-collinear phasematching, which resulted in a 230 nm (190 cm$^{-1}$) spectral bandwidth. Calculations indicate that such phasematching schemes may be used to further broaden OPO spectral bandwidths.