Emission properties of a distributed feedback laser cavity containing silicon nanocrystals
作者： K. Dohnalová , K. Kůsová , I. Pelant , J. Valenta , P. Gilliot
DOI: 10.1016/J.JLUMIN.2006.08.045
关键词: Photoluminescence 、 Resonator 、 Silicon 、 Light emission 、 Distributed feedback laser 、 Wafer 、 Optics 、 Optical cavity 、 Optical pumping 、 Materials science
摘要: Abstract We report on light emission from silicon nanocrystals (Si-nc) in a laser cavity. Using modified electrochemical etching of Si wafers we prepare Si-nc with blue-shifted photoluminescence spectrum down to 580–620 nm, embedded at high-volume fractions SiO 2 -based solid matrix. insert this active medium into an optically pumped resonator. Since our samples are only partially homogeneous, cannot use external mirrors order achieve optical feedback: induced internal distributed cavity by intense, spatially periodical excitation. Mode selection was simulated simplified theoretical model, based approach multiple reflections. In the framework model discuss experimentally observed spectral changes
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