报告人：

Prof. Maki Tachikawa

日本明治大学教授

邀请人：

孙振东 教授

报告时间：

2017-09-12 16:10

报告地点：

知新楼C702 量子报告厅

报告内容提示：

Although Planck’s law of blackbody radiation well describes spectral profiles of thermal radiation from macroscopic objects, it remains an open question if Planck’s formula is straightforwardly applicable to particles of size comparable to optical wavelengths. We experimentally demonstrate that thermal radiation from a micron-sized dielectric particle depends sensitively on its size and shape through the cavity quantum-electrodynamic effect. Our flow-assisted optical trapping levitates a single molten droplet to enable its emission spectroscopy.  As the particle becomes smaller, a blackbody-like spectrum turns into a spectrum dominated by multiple peaks resonant with whispering gallery modes of the dielectric sphere, showing that the spontaneous emission rate is modified by the discrete mode density.    Mie scattering theory well describes the mode-selective thermal radiation from a micron-sized particle, and also predicts monochromatic thermal radiation when the emitting body further shrinks into the submicron range.

报告人简历：

 1989年东京大学获得博士学位

 1987-1997東京大学理学部物理系  助手

 1994-1997美国国家标准与技术研究院(NIST)  客座研究员

 1997-2003明治大学物理系  副教授

 2003-现在 明治大学物理系  教授