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Optical Engineering

Femtosecond laser inscription waveguides in Nd:GdVO4 crystal
Author(s): Shi-Ling Li; Feng-Min Deng; Ze-Ping Huang
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Paper Abstract

Channel waveguides in Nd:GdVO4 crystals were fabricated by using low-repetition-rate (1 kHz) femtosecond laser inscription. The influences of pulse energy and scanning velocity were investigated. Guiding occurs in the surroundings of the focal spot. Single-line, double-line, and double-layer waveguides were realized. The near-field mode images, refractive-index profile reconstruction, and mode analysis of waveguides are presented. The double-line waveguides show strong guidance at 632.8 nm with a loss of about 0.5  dB/mm and an index increase of 3×10−4. The mode profile asymmetry of single-line waveguide has been improved by using multipass scanning.

Paper Details

Date Published: 14 October 2016
PDF: 6 pages
Opt. Eng. 55(10) 107104 doi: 10.1117/1.OE.55.10.107104
Published in: Optical Engineering Volume 55, Issue 10
Show Author Affiliations
Shi-Ling Li, Qufu Normal Univ. (China)
Feng-Min Deng, Qufu Normal Univ. (China)
Ze-Ping Huang, Qufu Normal Univ. (China)

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