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http://hdl.handle.net/10397/94366
Title: | Nonlinear photoacoustic generation by pump-probe excitation | Authors: | Cao, F Qiu, Z Wong, K Lai, P Sun, L |
Issue Date: | Feb-2019 | Source: | Proceedings of SPIE : the International Society for Optical Engineering, 2019, v. 10878, , Photons Plus Ultrasound: Imaging and Sensing 2019, 108784R | 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. | Keywords: | Nonlinearity Photoacoustic Pump-probe |
Publisher: | SPIE-International Society for Optical Engineering | Journal: | Proceedings of SPIE : the International Society for Optical Engineering | DOI: | 10.1117/12.2507342 | Description: | SPIE BIOS, 2-7 February 2019, San Francisco, California, United States | Rights: | Copyright 2019 Society of Photo‑Optical Instrumentation Engineers (SPIE). One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this publication for a fee or for commercial purposes, and modification of the contents of the publication are prohibited. The following publication Cao, F., Qiu, Z., Wong, K., Lai, P., & Sun, L., Nonlinear photoacoustic generation by pump-probe excitation, volume 10878, Photons Plus Ultrasound: Imaging and Sensing 2019, pp. 382-387 (27 February 2019) is available at http://dx.doi.org/10.1117/12.2507342. |
Appears in Collections: | Conference Paper |
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