Photoinduced second-harmonic generation in Tm-doped fibers

Peter N. Saeta; Denise M. Krol; David J. DiGiovanni

doi:10.1117/12.165664

22 December 1993 Photoinduced second-harmonic generation in Tm-doped fibers

Peter N. Saeta, Denise M. Krol, David J. DiGiovanni

Proceedings Volume 2044, Photosensitivity and Self-Organization in Optical Fibers and Waveguides; (1993) https://doi.org/10.1117/12.165664
Event: Optics Quebec, 1993, Quebec City, Canada

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.

Citation Download Citation

Peter N. Saeta, Denise M. Krol, and David J. DiGiovanni "Photoinduced second-harmonic generation in Tm-doped fibers", Proc. SPIE 2044, Photosensitivity and Self-Organization in Optical Fibers and Waveguides, (22 December 1993); https://doi.org/10.1117/12.165664

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