Non-resonant cavity for intensity buildup of multiple lasers

TL;DR

This paper introduces a non-resonant cavity that enhances laser intensity for multiple wavelengths, offering a simple, robust, and flexible solution for applications like atomic traps without the need for resonant conditions.

Contribution

The paper presents a novel non-resonant cavity design capable of increasing laser intensities for multiple wavelengths simultaneously, with practical advantages over traditional resonant cavities.

Findings

Achieved over tenfold intensity increase for multiple lasers

Maintained good uniformity across the laser beams

Demonstrated robustness against perturbations

Abstract

A non-resonant cavity to build up laser intensity is modeled, developed and tested. It can be used for overlapping multiple lasers of different wavelengths, increasing their intensities by over an order of magnitude while maintaining good uniformity. It is simple to set up, has flexible optical characteristics, and is robust against perturbations. The intensity buildup requires no resonances, and the wavelength dependence of the performance is limited only by the mirror coatings. The cavity can be used in applications requiring a spatially-constrained intensity buildup, for example in atomic and molecular traps.