Optically pumped distributed feedback dye lasing with slide-coated TiO2 inverse-opal slab as Bragg reflector

Authors
Han, Sung GuLim, JongchulShin, JinsubLee, Sung-MinPark, TaihoYoon, JongseungWoo, KyoungjaLee, HyunjungLee, Wonmok
Issue Date
2014-08-15
Publisher
OPTICAL SOC AMER
Citation
OPTICS LETTERS, v.39, no.16, pp.4743 - 4746
Abstract
We demonstrate an optical amplification of organic dye within a TiO2 inverse-opal (IO) distributed feedback (DFB) reflector prepared by a slide-coating method. Highly reflective TiO2 IO film was fabricated by slide coating the binary aqueous dispersions of polystyrene microspheres and charge-stabilized TiO2 nanoparticles on a glass slide and subsequently removing the polymer-opal template. TiO2 IO film was infiltrated, in turn, with the solutions of DCM, a fluorescent dye in various solvents with different indices of refraction. Optical pumping by frequency-doubled Nd: YAG laser resulted in amplified spontaneous emission in each dye solution. In accordance with the semi-empirical simulation by the FDTD method, DCM in ethanol showed the best emission/stopband matching for the TiO2 IO film used in this study. Therefore, photo excitation of a DCM/ethanol cavity showed a single-mode DFB lasing at 640 nm wavelength at moderate pump energy. (C) 2014 Optical Society of America
Keywords
PHOTONIC CRYSTAL; POLYMER MICROSPHERES; NANOPARTICLES; FABRICATION; FILMS; LASER; BAND; PHOTONIC CRYSTAL; POLYMER MICROSPHERES; NANOPARTICLES; FABRICATION; FILMS; LASER; BAND; dye lasing; TiO2; inverse-opal; Bragg reflector; photonic crystal
ISSN
0146-9592
URI
https://pubs.kist.re.kr/handle/201004/126463
DOI
10.1364/OL.39.004743
Appears in Collections:
KIST Article > 2014
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