DocumentCode :
2177189
Title :
Ultrafast switching of Si inverse opal photonic band gap crystals
Author :
Euser, Tijmen G. ; Wei, Hong ; Kalkman, Jeroen ; Jun, Yunhoo ; Polman, Albert ; Norris, David J. ; Vos, Willem L.
Author_Institution :
FOM Inst. for Atomic & Molecular Phys., Amsterdam
fYear :
2007
fDate :
17-22 June 2007
Firstpage :
1
Lastpage :
1
Abstract :
We present the first ultrafast optical switching of 3D photonic band gaps using Si inverse opals. Switching is achieved by homogeneously exciting free carriers by a two-photon process. We probe reflectivity over a broad frequency range, in particular the range where the photonic band gap is predicted. We observe a large frequency shift, and a fast decay time of 21 ps, which implies that switching could potentially be repeated at GHz rates, which is relevant to future switching and modulation applications. We also discuss the favorable prospects for ultrafast QED: switching spontaneous emission of light sources such as embedded quantum dots.
Keywords :
high-speed optical techniques; opalescence; optical materials; optical switches; photonic band gap; photonic crystals; silicon; two-photon processes; 3D photonic band gap crystal; Si inverse opals; embedded quantum dot; reflectivity; spontaneous emission; time 21 ps; two-photon process; ultrafast QED; ultrafast optical switching; Frequency; Light sources; Materials science and technology; Optical control; Optical pumping; Optical refraction; Photonic band gap; Photonic crystals; Physics; Reflectivity;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Lasers and Electro-Optics, 2007 and the International Quantum Electronics Conference. CLEOE-IQEC 2007. European Conference on
Conference_Location :
Munich
Print_ISBN :
978-1-4244-0931-0
Electronic_ISBN :
978-1-4244-0931-0
Type :
conf
DOI :
10.1109/CLEOE-IQEC.2007.4387040
Filename :
4387040
Link To Document :
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