Back focal plane imaging spectroscopy of photonic crystals
Back focal plane imaging spectroscopy of photonic crystals
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DOI：
10.1063/1.4746251
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发表时间：
2012-08
影响因子：
4
通讯作者：
Rebecca Wagner;Lars Heerklotz;Nikolai Kortenbruck;F. Cichos
中科院分区：
文献类型：
--
作者：
Rebecca Wagner;Lars Heerklotz;Nikolai Kortenbruck;F. Cichos
Back focal plane imaging spectroscopy is introduced to record angle resolved emission spectra of 3-dimensional colloidal photonic crystals. The auto-fluorescence of the colloids is used to quickly map the photonic band structure up to 72 % of the solid angle of a semisphere with the help of a high numerical aperture objective. Local excitation provides spatially resolved information on the photonic crystal’s optical properties. The obtained fractional density of states allows direct conclusions on the crystal’s stacking faults or defects.
