Modeling of Self-Pumped Singly Resonant Optical Parametric Oscillator

TL;DR

This paper develops a comprehensive steady-state model for a self-pumped singly resonant optical parametric oscillator, considering laser gain, cavity effects, and pump characteristics, to analyze threshold and efficiency.

Contribution

It introduces a detailed model incorporating gain medium properties, cavity standing wave effects, and pump beam focusing for SPSROs, advancing understanding of their operation.

Findings

Threshold power and efficiency characteristics analyzed

Impact of reabsorption losses and focusing on performance

Model applicable to Yb3+:MgO:PPLN gain medium

Abstract

A model of the steady-state operating, self-pumped singly resonant optical parametric oscillator (SPSRO) has been developed. The characteristics of quasi three-level laser gain medium pumped longitudinally have been taken into account. The characteristics of standing wave cavity, reabsorption losses, focusing Gaussian beams of the pump laser, fundamental laser and signal wave have been considered in the analyses. Furthermore, The power characteristics of threshold and efficiency have been analyzed, employing a Yb3+-doped periodically poled lithium niobate co-doped with MgO (Yb3+:MgO:PPLN) as the medium of laser gain and second-order nonlinear crystal.