Share Email Print
cover

Proceedings Paper

Nonlinear photoacoustic generation by pump-probe excitation
Format Member Price Non-Member Price
PDF $17.00 $21.00

Paper Abstract

Photoacoustic technique has undergone major developments in recent decades. Most of current photoacoustic systems work in the linear range, in which the photoacoustic amplitude increases proportionally to the increasing of illuminating light power. The imaging sensitivity and contrast, however, in this case are limited due to stronger background signals from intrinsic chromophores in biological tissue. The current work investigates the advantages of nonlinear photoacoustic generation compared to linear signal, by using a single-wavelength pump-probe and nanosecond-scale two-pulse excitation scheme. The results show that nonlinearity induced by this scheme yields higher detection sensitivity and contrast.

Paper Details

Date Published: 27 February 2019
PDF: 6 pages
Proc. SPIE 10878, Photons Plus Ultrasound: Imaging and Sensing 2019, 108784R (27 February 2019); doi: 10.1117/12.2507342
Show Author Affiliations
Fei Cao, The Hong Kong Polytechnic Univ. (Hong Kong, China)
Zhihai Qiu, The Hong Kong Polytechnic Univ. (Hong Kong, China)
Kinfung Wong, The Hong Kong Polytechnic Univ. (Hong Kong, China)
Puxiang Lai, The Hong Kong Polytechnic Univ. (Hong Kong, China)
Lei Sun, The Hong Kong Polytechnic Univ. (Hong Kong, China)


Published in SPIE Proceedings Vol. 10878:
Photons Plus Ultrasound: Imaging and Sensing 2019
Alexander A. Oraevsky; Lihong V. Wang, Editor(s)

© SPIE. Terms of Use
Back to Top