Share Email Print

Proceedings Paper

Femtosecond laser interferometric processing of Nd:GGG planar optical waveguide
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

Surface relief type gratings for input laser coupling were fabricated on the PLD deposited 2 at.%Nd:GGG thin film optical waveguide by femtosecond laser interferometric processing. The morphology and coupling efficiency were experimentally evaluated. A clear periodic structure with a fringe period of approximately 800 nm and height of approximately 100 nm was obtained for a surface relief type grating induced on the target surface with a fluence of 0.92 Jcm-2. The coupling efficiency of an 808 nm-centered laser diode pumping light into the 1.35 μm thick film was measured as a function of the incident angle. Three coupling peaks were observed at 57°, 65° and 77°, each being the coupling to the TE0, TE1 and TE2 modes respectively. Each peak had a large FWHM and a maximum coupling efficiency was 3%.

Paper Details

Date Published: 17 October 2003
PDF: 5 pages
Proc. SPIE 4977, Photon Processing in Microelectronics and Photonics II, (17 October 2003); doi: 10.1117/12.479243
Show Author Affiliations
Ken Oi, Keio Univ. (Japan)
Minoru Obara, Keio Univ. (Japan)
Tetsumi Sumiyoshi, Cyber Laser, Inc. (Japan)

Published in SPIE Proceedings Vol. 4977:
Photon Processing in Microelectronics and Photonics II
Alberto Piqué; Koji Sugioka; Peter R. Herman; Jim Fieret; David B. Geohegan; Frank Träger; Kouichi Murakami; Friedrich G. Bachmann; Jan J. Dubowski; Willem Hoving; Kunihiko Washio, Editor(s)

© SPIE. Terms of Use
Back to Top