报告题目：Laser effects investigations in ZnO
报告人：Mikhail Ryzhkov， The Institute of Radio engineering and Electronics (IRE) of Russian Academy of Sciences （俄罗斯科学研究院无线电工程和电子研究所）
时间：2010年6月13日9:00
地点：硅材料国家重点实验室会议室（半导体厂内3号楼）
内容摘要：
The main reason of the resonance existing in the metal nanoparticles is the localizing (confinement) of electrons in the small volumes of these particles; under the influence of the plane electromagnetic wave inside the particle with the size less than wavelength electrons move in phase; polarization appear – on the surface of the particle the charge appears, which leads to an effective restoring force appearance, resulting in dipole plasmonic frequency appearance.
As a result, inside and around the particle the electromagnetic field increases dramatically. There is an effect of such giant field – the main principal can be applied in localized plasmonic resonance. The resonance frequency strongly depended on the materials, shape and dimension of metal particle. These fields can provide a better probability of radiative transition for lanthanide ions as well as for ZnO exciton recombination, which can increase the luminescence or laser radiation.
报告人简介：
ScientificAssociateintheInstituteofRadioengineeringandElectronics (IRE) ofRussianAcademyofSciences；
Graduated from Physical department of Moscow State University in 2004; PhD received from the Institute of Radio engineering and Electronics (IRE) of Russian Academy of Sciences in 2007 ;
Research fields: physics of semiconductors, random lasers, photonic.
欢迎师生参加！
2010年5月11日
