Near-infrared distributed feedback solgel lasers by intensity modulation and polarization modulation

Jun Wang; Hongxing Dong; Jintai Fan; Rihong Li; Long Zhang; King Y Wong

doi:10.1364/AO.50.006248

Near-infrared distributed feedback solgel lasers by intensity modulation and polarization modulation

Appl Opt. 2011 Nov 20;50(33):6248-53. doi: 10.1364/AO.50.006248.

Authors

Jun Wang¹, Hongxing Dong, Jintai Fan, Rihong Li, Long Zhang, King Y Wong

Affiliation

¹ Key Laboratory of Materials for High-Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, China. jwang@siom.ac.cn

PMID: 22108883
DOI: 10.1364/AO.50.006248

Abstract

Near-infrared distributed feedback (DFB) laser actions of Oxazine 725 dye in zirconia thin films and in silica bulks were investigated. Intensity modulation and polarization modulation were used to generate the DFB lasing. Wideband tuning of the output wavelength was achieved by varying the period of the modulation generated by a nanosecond Nd:YAG laser at 532 nm. Tuning ranges were 716-778 nm and 724-813 nm for the thin film lasers and the bulk lasers, respectively. The laser output showed different polarization characteristics and threshold energy variation when the feedback mechanism was changed from intensity modulation to polarization modulation.