Translator Disclaimer
Presentation
11 October 2018 Optically pumped rare gas lasers (Conference Presentation)
Author Affiliations +
Abstract
There have been concerted efforts to develop high-energy diode-pumped alkali vapor lasers (DPAL). These hybrid gas phase / solid-state laser systems offer possibilities for constructing high-powered lasers that have high beam quality. DPAL's utilize excitation of the alkali metal 2P3/22S1/2 transition, followed by collisional relaxation and lasing on the 2P1/2-2S1/2 line. Considerable progress has been made, but there are technical challenges associated with the reactivity of the metal atoms. Rare gas atoms (Rg) excited to the np5(n+1)s 3P2 configuration are metastable and have spectral properties that are closely similar to those of the alkali metals. In principle, optically pumped lasers can be constructed using excitation of the np5(n+1)p  np5(n+1)s transitions. We have demonstrated gain and lasing for optically pumped Ne*, Ar*, Kr* and Xe*. Three-level lasing schemes were used, with He as the collisional energy transfer agent that established the population inversion. These laser systems have the advantage using inert reagents that are gases at room temperature, with excellent potential for closed-cycle, multi-wavelength operation. The primary technical difficulty for the rare gas laser is the discharge production of sufficient Rg* metastables in the presence of >200 Torr of He. We have developed a high frequency pulsed discharge that yields >10^13 /cm^3 Ar* in the presence of He at pressures up to 730 Torr. Using this discharge, a diode pumped Ar* laser providing 4.1 W of continuous wave output has been demonstrated, with an optical conversion efficiency of 31%. Further development of the pulsed discharge system, lasing demonstrations with Xe* and preliminary experiments with dielectric barrier discharges will be discussed.
Conference Presentation
© (2018) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Michael C. Heaven "Optically pumped rare gas lasers (Conference Presentation)", Proc. SPIE 10798, High-Power Lasers: Technology and Systems, Platforms, and Effects II, 1079806 (11 October 2018); https://doi.org/10.1117/12.2501201
PROCEEDINGS
PRESENTATION


SHARE
Advertisement
Advertisement
RELATED CONTENT

Optically pumped rare gas lasers
Proceedings of SPIE (January 03 2019)
An intense radiation in mid-infrared of Xe
Proceedings of SPIE (January 13 2017)
Gain and lasing of optically pumped metastable rare gas atoms
Proceedings of SPIE (November 08 2012)
Laboratory studies of CO2(nu2)-O vibrational energy transfer
Proceedings of SPIE (February 16 2004)
Impulse enhancement by in-tube operation in laser propulsion
Proceedings of SPIE (September 13 2002)

Back to Top