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Title: Multiple stimulated emission fluorescence photoacoustic sensing and spectroscopy
Authors: Li, Gaoming
Gao, Fei
Qiu, Yishen
Feng, Xiaohua
Zheng, Yuanjin
Keywords: Stimulated emission
Photoacoustic spectroscopy
Issue Date: 2016
Source: Li, G., Gao, F., Qiu, Y., Feng, X., & Zheng, Y. (2016). Multiple stimulated emission fluorescence photoacoustic sensing and spectroscopy. Applied Physics Letters, 109(1), 013701-.
Series/Report no.: Applied Physics Letters
Abstract: Multiple stimulated emission fluorescence photoacoustic (MSEF-PA) phenomenon is demonstrated in this letter. Under simultaneous illumination of pumping light and stimulated emission light, the fluorescence emission process is speeded up by the stimulated emission effect. This leads to nonlinear enhancement of photoacoustic signal while the quantity of absorbed photons is more than that of fluorescent molecules illuminated by pumping light. The electronic states' specificity of fluorescent molecular can also be labelled by the MSEF-PA signals, which can potentially be used to obtain fluorescence excitation spectrum in deep scattering tissue with nonlinearly enhanced photoacoustic detection. In this preliminary study, the fluorescence excitation spectrum is reconstructed by MSEF-PA signals through sweeping the wavelength of exciting light, which confirms the theoretical derivation well.
ISSN: 0003-6951
DOI: 10.1063/1.4955096
Schools: School of Electrical and Electronic Engineering 
Rights: © 2016 American Institute of Physics. This paper was published in Applied Physics Letters and is made available as an electronic reprint (preprint) with permission of American Institute of Physics. The published version is available at: []. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
Fulltext Permission: open
Fulltext Availability: With Fulltext
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