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Spectral gain and 2-micron lasing in Tm:Lu2O3 ceramic under intense pumping (Conference Presentation)
Author(s): John Vetrovec; David M. Filgas; Drew A. Copeland; Carey A. Smith; Eldridge Briscoe

Paper Abstract

Wide-band tunable 2 µm lasers are sought for remote sensing, eye–safe lasers, laser processing of transparent plastics, medical therapy, ultra¬fast lasers (UFL), accelera¬tion of nuclear particles, and generation of visible output via harmonic conversion [1]. We have previously reported efficient lasing in Tm:Lu2O3 ceramic while tuning over 230-nm range in the vicinity of 2 µm and delivering up to 43 W QCW [2]. Tm:Lu2O3 ceramic gain material has a much lower saturation fluence than the traditionally used Tm:YLF and Tm:YAG materials, thus offering improved energy extraction. Ceramic construction offers size scalability and convenient fabrication of gain medium composites. This paper reports on experimental evaluation of laser gain and q-switched output pulse energy in vicinity of 2-microns in Tm:Lu2O3 ceramic rod end-pumped by 796-nm diodes. Also included is the operation and spectral gain evaluation of a Tm:Lu2O3 ceramic edge-pumped disk laser with multi-passed extraction, which is seeded by the above end-pumped rod laser. This work was supported by the U.S. Department of Energy grant number DE-SC0013762. 1. Drew A. Copeland, John Vetrovec, and Amar S. Litt, "Wide-Bandwidth Ceramic Tm:Lu2O3 Amplifier," SPIE 9834, (2016). 2. John Vetrovec, et al., "2-Micron Lasing in Tm:Lu2O3 Ceramic: Initial Operation," SPIE vol. 10511 (2018)

Paper Details

Date Published: 13 March 2019
Proc. SPIE 10896, Solid State Lasers XXVIII: Technology and Devices, 1089605 (13 March 2019); doi: 10.1117/12.2511059
Show Author Affiliations
John Vetrovec, Aqwest, LLC (United States)
David M. Filgas, Aqwest, LLC (United States)
Drew A. Copeland, Aqwest, LLC (United States)
Carey A. Smith, Aqwest, LLC (United States)
Eldridge Briscoe, General Atomics Aeronautical Systems, Inc. (United States)

Published in SPIE Proceedings Vol. 10896:
Solid State Lasers XXVIII: Technology and Devices
W. Andrew Clarkson; Ramesh K. Shori, Editor(s)

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