主办：现代光学技术应用研究所

时间：2014年10月24日下午2:30

地点：理六栋2楼多功能厅

报告人： 黄佐华教授

题目：Quantitative Measurement of Phase Variation Amplitude of Ultrasonic Diffraction Grating Based on Diffraction Spectral Analysis

摘要：A new method based on diffraction spectral analysis is proposed for the quantitative measurement of the phase variation amplitude of ultrasonic diffraction grating. For a traveling wave, the phase variation amplitude of the grating depends on the intensity of the zeroth- and first-order diffraction waves. By contrast, for a standing wave, this amplitude depends on the intensity of the zeroth-, first-, and second-order diffraction waves. The proposed method is verified experimentally. The measured phase variation amplitude ranges from 0 to 2π, with relative error of approximately 5%. A nearly linear relation exists between the phase variation amplitude and driving voltage. Our proposed method can also be applied to ordinary sinusoidal phase grating.

报告人：吴泳波

题目：解读2014诺贝尔化学奖-超分辨光学显微成像技术-纳米显微时代；  

摘要：显微镜的发明为揭示生命的奥秘带来了革命性的进展，本年度的诺贝尔化学奖-超分辨光学显微成像技术将光学显微成像推进到了纳米的显微时代，本报告主要解读该诺贝尔化学奖的内在联系，为大家介绍目前国际上常用的几种超分辨光学显微成像技术的原理

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