1 April 2003 Optoacoustic determination of optical attenuation depth using interferometric detection
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We use a modified Mach-Zehnder interferometer to measure surface displacement resulting from the thermoelastic response of a target to the absorption of a short laser pulse with axial and temporal resolutions of 0.1 nm and 3 ns, respectively. These measurements are used in conjunction with a solution to the thermoelastic wave equation and a nonlinear optimization algorithm to extract optical attenuation depth. We demonstrate the ability to determine the effective optical attenuation depth of homogeneous targets with either diffuse or specular reflecting surfaces with a precision of 4% for attenuation depths spanning 0.1 to 2 mm.
© (2003) Society of Photo-Optical Instrumentation Engineers (SPIE)
Barry P. Payne, Vasan Venugopalan, Bora B. Mikic, Norman S. Nishioka, "Optoacoustic determination of optical attenuation depth using interferometric detection," Journal of Biomedical Optics 8(2), (1 April 2003). https://doi.org/10.1117/1.1559731 . Submission:

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