Optimal design for wavelength conversion with a configuration of walk-off compensation in free space in the nanosecond pulsed regime

TL;DR

This paper presents a combined numerical and experimental approach to optimize wavelength conversion in nonlinear optical crystals, achieving high energy efficiency and maintaining beam quality in the nanosecond pulsed regime.

Contribution

It introduces an optimal design using walk-off compensation in free space for wavelength conversion, enhancing efficiency and beam quality.

Findings

Near-full energy conversion achieved

Good single-mode properties maintained

Design applicable across various wavelengths and intensities

Abstract

On the basis of standard wavelength conversion by the use of angular phase matching of nonlinear optical crystals arranged in free space, applicable to a wide range of wavelengths and laser intensities, we both numerically and experimentally present an optimal design for achieving near-full energy conversion while maintaining good single-mode properties of fundamental laser radiation in the nanosecond regime.