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Proceedings Paper

Molecular engineering and photostability of laser dyes within sol-gel hosts
Author(s): Tayyab I. Suratwala; Kevin Davidson; Zack Gardlund; Donald R. Uhlmann; Sandra I. Bonilla; Nasser Peyghambarian
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Paper Abstract

The use of solid-state dye laser for commercial applications has been limited largely by the poor photostability of the gain medium. Techniques are examined to improve the photostability of Coumarin and Pyrromethene-BF2 567 (PM- 567) laser dyes within xerogel and Polyceram hosts synthesized by sol-gel processing. The photochemical mechanisms by which laser dyes degrade are discussed and determined specifically for PM-567. PM-567 was determined to degrade both by photo-oxidation and acid degradation. Techniques for improving photostability are described from a molecular engineering perspective. These techniques include: covalently attaching the laser dye to the host; controlling the chemical environment of the dye; increasing dye caging by increasing the SiO2 content; removing porosity from the host; and incorporating additives such as hindered amine light stabilizers to minimize photodegradation.

Paper Details

Date Published: 31 March 1997
PDF: 12 pages
Proc. SPIE 2986, Solid State Lasers VI, (31 March 1997); doi: 10.1117/12.269991
Show Author Affiliations
Tayyab I. Suratwala, Univ. of Arizona (United States)
Kevin Davidson, Univ. of Arizona (United States)
Zack Gardlund, Univ. of Arizona (United States)
Donald R. Uhlmann, Univ. of Arizona (United States)
Sandra I. Bonilla, Optical Sciences Ctr./Univ. of Arizona (United States)
Nasser Peyghambarian, Optical Sciences Ctr./Univ. of Arizona (United States)

Published in SPIE Proceedings Vol. 2986:
Solid State Lasers VI
Richard Scheps, Editor(s)

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