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Proceedings Paper

Photoinduced second-harmonic generation in Tm-doped fibers
Author(s): Peter N. Saeta; Denise M. Krol; David J. DiGiovanni
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Paper Abstract

We have investigated the influence of Nd:YAG laser light at 1064 nm on the grating growth and erasure processes for 790/395-nm light in Tm-doped fibers. The addition of 1064-nm light to the writing pair of 790/395 nm was observed to cause at most a slight increase in writing speed in a low-Tm fiber; in a high-Tm fiber, however, it caused a rapid drop in second- harmonic generation (SHG). This drop is determined to result from Nd:YAG-induced photodarkening, which can be partially reversed by prolonged exposure to 790-nm light. These results imply either that intense Nd:YAG irradiation does not produce mobile electrons or that the mechanism of second-harmonic generation in these fibers does not involve static macroscopic electric fields.

Paper Details

Date Published: 22 December 1993
PDF: 9 pages
Proc. SPIE 2044, Photosensitivity and Self-Organization in Optical Fibers and Waveguides, (22 December 1993); doi: 10.1117/12.165664
Show Author Affiliations
Peter N. Saeta, AT&T Bell Labs. (United States)
Denise M. Krol, AT&T Bell Labs. (United States)
David J. DiGiovanni, AT&T Bell Labs. (United States)


Published in SPIE Proceedings Vol. 2044:
Photosensitivity and Self-Organization in Optical Fibers and Waveguides
Francois Ouellette, Editor(s)

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