Optimised brightness from solid-state lasers

TL;DR

This paper introduces an intra-cavity beam shaping technique in solid-state lasers that simultaneously maximizes energy content and beam quality, leading to higher brightness and improved laser performance.

Contribution

It demonstrates a novel intra-cavity beam shaping method that achieves optimal high brightness in solid-state lasers by combining multimode energy with Gaussian beam quality.

Findings

Achieved simultaneous maximization of energy and beam quality.

Demonstrated the feasibility of intra-cavity beam shaping in solid-state lasers.

Potential to influence future high brightness laser designs.

Abstract

Laser brightness is a measure of the ability to de- liver intense light to a target, and encapsulates both the energy content and the beam quality. High brightness lasers requires that both parameters be maximised, yet standard laser cavities do not allow this. For example, in solid-state lasers multimode beams have a high energy content but low beam quality, while Gaussian modes have a small mode volume and hence low energy extraction, but in a good quality mode. Here we over- come this fundamental limitation and demonstrate an optimal approach to realising high brightness lasers. We employ intra- cavity beam shaping to produce a Gaussian mode that carries all the energy of the multimode beam, thus energy extraction and beam quality are simultaneously maximised. This work will have a significant influence on the design of future high brightness laser cavities.