Nonresonance adiabatic photon trap

TL;DR

This paper introduces a nonresonance adiabatic photon trap that efficiently stores high-divergence and broad-spectrum light using concave mirrors, demonstrating high efficiency with a commercial fiber laser.

Contribution

It presents a novel photon storage method based on adiabatic confinement that is tolerant to typical resonator imperfections and broad spectral and angular ranges.

Findings

High efficiency photon accumulation confirmed

Effective with broad angular spread and spectrum

Uses commercial fiber laser as source

Abstract

Concept of high efficiency photon storage based on adiabatic confinement between concave mirrors is presented and experimentally investigated. The approach is insensitive to typical for Fabri-Perot cells requirements on quality of accumulated radiation, tolerance of resonator elements and their stability. Experiments have been carried out with the trap, which consists from opposed concave cylindrical mirrors and conjugated with them spherical mirrors. In result, high efficiency for accumulation of radiation with large angular spread and spectrum width has been confirmed. As radiation source a commercial fiber laser has been used.