Modellization of RGB lasers based on QPM structures with independent control of laser intensities by electrooptic effect

TL;DR

This paper models RGB lasers based on quasi-phase matching structures, exploring independent intensity control via the electrooptic effect, with potential advantages in Sr0.6Ba0.4(NbO3)2 over LiNbO3.

Contribution

It introduces a Fourier Transform-based model for RGB lasers with independent intensity control using electrooptic effects in quasi-periodic ferroelectric structures.

Findings

Electrooptic control is more effective in Sr0.6Ba0.4(NbO3)2 than in LiNbO3.

The model demonstrates potential for independent laser intensity modulation.

The approach simplifies the design of tunable RGB laser sources.

Abstract

Recently simultaneous generation of continuous-wave visible laser light in the three fundamental colors has been experimentally demonstrated in Nd3+-doped LiNbO3 and Sr0.6Ba0.4(NbO3)2 by quasi-phase matching intracavity self-frequency conversion. In this work, we report the modelization of RGB lasers operating under similar experimental conditions but designed in the simplest quasi-periodically poled ferroelectric form by using the Fourier Transform technique. The aim of this work is to analyse the possibility of controlling the three laser intensities in an independent and novel way by means of the linear electrooptic (Pockels) effect in these non-linear materials. Our results suggest that the application of electrooptic effect for this purpose, according to our proposed scheme, is better adapted to Sr0.6Ba0.4(NbO3)2 than to Nd3+-doped LiNbO3.