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Proceedings Paper

Growth, properties, and applications of potassium niobate single crystals
Author(s): Gregory J. Mizell; William R. Fay; Theodore Alekel III; Daniel Rytz; Mark H. Garrett
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Paper Abstract

Production refinements and pragmatic optical properties of the frequency converter crystal KNbO3 (KN) are highlighted regarding its commercialization. The growth, morphological orientation, and processing of KN crystals into devices are outlined. Passive absorption data are presented that define the effective window range for KN devices. An absorption band at 2.85 micrometers is attributed to the presence of OH groups in the crystal, and its vibrational strength varies with crystal growth conditions and incident polarized light orientation. Although blue light induced infrared absorption (BLIIRA) can reduce second harmonic generation (SHG) efficiency at high powers, single-pass conversion efficiencies of 1%/W(DOT)cm may be achieved with incident fundamental powers of 10 W. The ability of KN to noncritically phasematch by temperature tuning provides blue-green wavelengths; together with critical angle-tuned phasematching, the entire visible spectrum may be accessed with efficient SHG conversion.

Paper Details

Date Published: 1 June 1994
PDF: 12 pages
Proc. SPIE 2115, Visible and UV Lasers, (1 June 1994); doi: 10.1117/12.172743
Show Author Affiliations
Gregory J. Mizell, Virgo Optics (United States)
William R. Fay, Virgo Optics (United States)
Theodore Alekel III, Virgo Optics (United States)
Daniel Rytz, Sandoz Huningue SA (France)
Mark H. Garrett, Sandoz Huningue SA (France)

Published in SPIE Proceedings Vol. 2115:
Visible and UV Lasers
Richard Scheps, Editor(s)

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