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

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

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 o...

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Veröffentlicht in:Applied Optics 2011-11, Vol.50 (33), p.6248-6253
Hauptverfasser: Wang, Jun, Dong, Hongxing, Fan, Jintai, Li, Rihong, Zhang, Long, Wong, King Y
Format: Artikel
Sprache:eng
Schlagworte:
Feedback
Lasers
Modulation
Nanostructure
Polarization modulation
Thin films
Tuning
Zirconium dioxide
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Zusammenfassung: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.
ISSN:0003-6935
1559-128X
2155-3165
1539-4522
DOI:10.1364/AO.50.006248