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Proceedings Paper

Growth And Characterization Of Ti:YA103 For Tunable Solid State Laser Applications
Author(s): C. P. Khattak; F. Schmid; K. F. Wall; R. L. Aggarwal
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Paper Abstract

Titanium-doped YA1O3 (Ti:YA1O3) is an attractive candidate for a visible to near-infrared tunable solid-state laser. Un-seeded crystal growth utilizing the heat exchanger method has produced Ti:YA1O3 crystals up to 1-cm in length. Spectroscopic measurements at room temperature showed that the Ti3+ absorption peaked at approximately 430 nm and extended from 380 nm to 550 nm. The fluorescence emission peaked at 600 nm and extended from 540 nm to 800 nm. No detectable parasitic absorption was observed in the 600-800 nm region; the figure of merit was estimated to be in excess of 15 as compared to previously reported values of 1.5 to 3. The lifetime of the excited state was measured to be 11.4 ± 0.5 gsec. In this work lasing was not observed because of pump-induced excited-state absorption in our crystals, presumably arising from charge transfer transitions to energy levels of defects, and not because of parasitic absorption.

Paper Details

Date Published: 25 September 1989
PDF: 5 pages
Proc. SPIE 1104, Growth, Characterization, and Applications of Laser Host and Nonlinear Crystals, (25 September 1989); doi: 10.1117/12.960584
Show Author Affiliations
C. P. Khattak, Crystal Systems, Inc. (United States)
F. Schmid, Crystal Systems, Inc. (United States)
K. F. Wall, Massachusetts Institute of Technology (United States)
R. L. Aggarwal, Massachusetts Institute of Technology (United States)

Published in SPIE Proceedings Vol. 1104:
Growth, Characterization, and Applications of Laser Host and Nonlinear Crystals
Jui Teng Lin, Editor(s)

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