Photoacoustic Remote Sensing Microscopy with Lock-In Amplification

被引：0

作者：

Shi, Wei ^{[1
]}

Hajireza, Parsin ^{[1
]}

Bell, Kevan ^{[1
]}

Zemp, Roger ^{[1
]}

机构：

[1] Univ Alberta, Dept Elect & Comp Engn, Edmonton, AB, Canada

来源：

PHOTONS PLUS ULTRASOUND: IMAGING AND SENSING 2017 | 2017年 / 10064卷

基金：

加拿大自然科学与工程研究理事会; 加拿大创新基金会;

关键词：

lock-in amplification; photoacoustic remote sensing; photoacoustic imaging; LASER;

D O I：

10.1117/12.2253195

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

High sensitive detection with lock-in amplification can provide high signal noise ratio even when noise is in orders of magnitude higher than the signal. Here we report to combine lock-in amplification with a novel photoacoustic remote sensing (PARS) technology to achieve high resolution, high contrast, all optical non-contact photoacoustic imaging at depth beyond optical scattering limitation. We demonstrate phantom measurements from PARS with lock-in technology were several orders of magnitude more sensitive than those from PARS with the broadband detection techniques.

引用

页数：6

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