Analytical model of tunable Alexandrite lasing under diode end-pumping with experimental comparison

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Title: Analytical model of tunable Alexandrite lasing under diode end-pumping with experimental comparison
Author(s): Kerridge-Johns, WR
Damzen, MJ
Item Type: Journal Article
Abstract: An analytical model is formulated to support understanding and underpin experimental development of laser action in the promising diode end-pumped Alexandrite system. Closed form solutions are found for output power, threshold, and slope efficiency that for the first time incorporate the combined effects of laser ground state absorption and excited state absorption (laser ESA), along with pump excited state absorption (pump ESA), in the case of an end-pumping geometry. Comparison is made between model predictions and experimental results from a fiber-delivered diode end-pumped Alexandrite laser system, showing the impact of wavelength tuning, crystal temperature, laser output coupling, and intracavity loss. The model is broadly applicable to other quasi-three-level lasers with combined laser and pump ESA. A condition for bistable operation is also formulated.
Publication Date: 15-Nov-2016
Date of Acceptance: 20-Oct-2016
URI: http://hdl.handle.net/10044/1/44506
DOI: https://dx.doi.org/10.1364/JOSAB.33.002525
ISSN: 0740-3224
Publisher: Optical Society of America
Start Page: 2525
End Page: 2534
Journal / Book Title: Journal of the Optical Society of America B
Volume: 33
Issue: 12
Copyright Statement: © 2016 Optical Society of America. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modifications of the content of this paper are prohibited.
Keywords: Science & Technology
Physical Sciences
Optics
EXCITED-STATE ABSORPTION
OPTICAL BISTABILITY
WAVELENGTH REGION
LASER
TEMPERATURE
Optics
0205 Optical Physics
0906 Electrical And Electronic Engineering
0102 Applied Mathematics
Publication Status: Published
Article Number: 273999
Appears in Collections:Physics
Photonics
Faculty of Natural Sciences



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