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

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 TEM00 mode property of fundamental laser radiation in the nanosecond regime.(c) 2023 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement

Automated summary

In this study, we propose an optimal design for achieving near-full energy conversion while maintaining good TEM00 mode property of fundamental laser radiation in the nanosecond regime. The design is based on standard wavelength conversion using angular phase matching of nonlinear optical crystals arranged in free space, and is applicable to a wide range of wavelengths and laser intensities.