Kinetics of the CuBr vapor active medium under non-typical excitation conditions

TL;DR

This paper investigates a novel excitation mode for copper bromide lasers using pulse train pumping, revealing extended pulse durations and superradiance, supported by kinetic modeling and experimental validation.

Contribution

It introduces a new excitation mode for copper bromide lasers that extends pulse duration and enables superradiance, supported by kinetic analysis and experimental data.

Findings

Extended laser pulse durations achieved with pulse train excitation

Relaxation processes during pauses influence pulse characteristics

New insights into copper bromide kinetics in active media

Abstract

We study a non-typical excitation mode of the copper bromide active medium using the kinetic model. The active medium is pumped by the pulse train and the laser generation is obtained in the subsequent single excitation pulse. Such mode allows one to obtain the laser generation pulse with the extended duration by increase in the pause duration after the pulse train. The relaxation processes during the pause are studied in order to explain such effect. It is shown that this operation mode can also be used to obtain the superradiance and amplification pulses of the extended duration that is of interest for active optical systems. Based on the comparison with the experimental results, new fundamental results are obtained regarding the copper bromide kinetics in the active medium.