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Proceedings Paper

Comparative study of broadband, narrowband and multi-wavelength resonant pumping of Er:YAG lasers
Author(s): H. Fritsche; O. Lux; M. Gaertner; A. Grohe; W. Gries; H. J. Eichler
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Paper Abstract

The multiplicity of narrow absorption lines of erbium ions in the spectral range from 1450 to 1560 nm is exploited for the development of a highly efficient Er:YAG laser emitting at 1645 nm. We present a comparative analysis on the performance of resonantly pumped Er:YAG lasers using different pumping schemes including both broadband and narrowband sources as well as different pump wavelengths. An absorption efficiency of up to 96% is achieved when pumping with narrow bandwidth sources. Furthermore, multi-wavelength pumping allows for both substantial power scaling and reduction of the laser threshold, thus providing a low power-consuming laser system.

Paper Details

Date Published: 16 March 2016
PDF: 7 pages
Proc. SPIE 9726, Solid State Lasers XXV: Technology and Devices, 972606 (16 March 2016); doi: 10.1117/12.2213321
Show Author Affiliations
H. Fritsche, Technische Univ. Berlin (Germany)
DirectPhotonics Industries GmbH (Germany)
O. Lux, Technische Univ. Berlin (Germany)
M. Gaertner, Technische Univ. Berlin (Germany)
A. Grohe, DirectPhotonics Industries GmbH (Germany)
W. Gries, DirectPhotonics Industries GmbH (Germany)
H. J. Eichler, Technische Univ. Berlin (Germany)

Published in SPIE Proceedings Vol. 9726:
Solid State Lasers XXV: Technology and Devices
W. Andrew Clarkson; Ramesh K. Shori, Editor(s)

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