@inproceedings{566edb68dbb24010bc6ab19d605f11eb,
title = "New strong higher order spatial harmonic gratings induced by multiwave interaction in photorefractive Bi12SiO20",
keywords = "Optik og sensorsystemer",
author = "P.A. Andersen and P.M. Petersen",
year = "1997",
language = "English",
pages = "539--542",
booktitle = "Proceedings. 1997 Topical meeting on photorefractive materials, effects and devices",
publisher = "Optical Society of Japan",
note = "Photorefractive Materials, Effects and Devices, PR '97 ; Conference date: 11-06-1997 Through 13-06-1997",
}