A dual color, frequency, pulse duration and shape agile laser system for particle spectroscopy and manipulation

TL;DR

This paper introduces a highly versatile dual-color laser system capable of producing customizable pulses with broad parameter ranges, enabling advanced spectroscopy and particle manipulation techniques, including coherent Rayleigh-Brillouin scattering.

Contribution

The paper presents a novel laser system with unprecedented flexibility in pulse shaping, frequency, and duration, optimized for diverse experimental applications in spectroscopy and diagnostics.

Findings

Successfully demonstrated coherent Rayleigh-Brillouin scattering in single and dual color setups

Achieved pulse durations from ~1 ns to ~1 μs with high chirping rates

Provided a versatile platform for non-intrusive gas and plasma diagnostics

Abstract

A dual color, frequency and pulse duration agile laser system, capable of delivering laser pulses in arbitrary temporal profiles with ~1 ns to ~1 us pulse duration, chirping rates of ~27 MHz/ns with an achievable chirping range of several GHz across the pulse duration, and with energies ranging from a few nJ to hundreds of mJ per pulse has been developed. The flexibility and capability of this laser system provide a wide range of laser parameters that can be exploited to optimize operational conditions in various experiments ranging from laser diagnostics to spectroscopy and optical manipulation of matter. The developed system is successfully demonstrated to obtain coherent Rayleigh-Brillouin scattering (CRBS) in both single and dual color configuration, in an effort to expand the non-intrusive accessibility towards lower pressure regime for neutral gas and plasma diagnostics.