Photothermal mirror Z-scan spectrometry of opaque samples

被引：4
|
作者：
Olaizola, Aristides Marcano [1 ]
机构：
[1] Delaware State Univ, Div Phys Engn Math & Comp Sci, 1200 North DuPont Highway, Dover, DE 19901 USA
来源：
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS | 2019年 / 36卷 / 10期
基金：
美国国家科学基金会;
关键词：
THERMAL MIRROR; LENS; DEFORMATION; SILICON;
D O I：
10.1364/JOSAB.36.002907
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
This contribution introduces a pump-probe photothermal mirror Z-scan method to measure the thermal quantum yield, the thermal diffusivity, and other photothermal parameters of an opaque solid. The focusing of a pump beam of light onto the sample generates thermoelastic surface distortions. The distorted surface acts as a mirror affecting the diffraction pattern of a reflected probe beam yielding the experimental signal. Scanning the focusing lens produces a single peak photothermal mirror Z-scan signature. The amplitude and time evolution of the signal determines the sample's photothermal properties. The method is used to analyze gallium arsenide and silicon plates, obtaining good agreement with previous studies. (C) 2019 Optical Society of America.
引用
收藏
页码：2907 / 2912
页数：6
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