Abstract

The optoacoustic signal generated via pulsed laser excitation-transducer detection is frequency analyzed via a discrete Fourier transform. The frequency spectrum is found to exhibit a pronounced maximum at the transducer resonant frequency. Use of this maximum as a measure of the optoacoustic signal strength allows for discrimination against window absorption and various electrical and mechanical noise sources.

Resonant optoacoustic cells for trace gas analysis*

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High-frequency optoacoustic transmitter based on nanostructured germanium via metal-assisted chemical etching

Geonwook Yoo, Youngseo Park, Pilgyu Sang, Hyoung Won Baac, and Junseok Heo
Opt. Mater. Express 6(8) 2567-2572 (2016)

Experimental demonstration of multiple pulse nonlinear optoacoustic signal generation and control

Fletcher Blackmon and Lynn Antonelli
Appl. Opt. 44(1) 103-112 (2005)

Fast Fourier backprojection for frequency-domain optoacoustic tomography

Pouyan Mohajerani, Stephan Kellnberger, and Vasilis Ntziachristos
Opt. Lett. 39(18) 5455-5458 (2014)

Quantitative signal analysis in pulsed resonant photoacoustics

Stefan Schäfer, András Miklós, and Peter Hess
Appl. Opt. 36(15) 3202-3211 (1997)