Abstract

Optical Gaussian beam interaction with a one-dimensional temperature field in the form of a thermal wave in the Raman–Nath configuration is analyzed. For the description of the Gaussian beam propagation through the nonstationary temperature field the complex geometric optics method was used. The influence of the refractive coefficient modulation by thermal wave on the complex ray phase, path, and amplitude was taken into account. It was assumed that for detection of the modulated Gaussian beam parameters two types of detector can be used: quadrant photodiodes or centroidal photodiodes. The influence of such parameters as the size and position of the Gaussian beam waist, the laser–screen (detector) distance, the thermal wave beam position and width, as well as thermal wave frequency and the distance between the probing optical beam axis and source of thermal waves on the so-called normal signal was taken into account.

© 2008 Optical Society of America

Photodeflection signal formation in photothermal measurements: comparison of the complex ray theory, the ray theory, the wave theory, and experimental results

Dorota Korte Kobylińska, Roman J. Bukowski, Boguslaw Burak, Jerzy Bodzenta, and Stanislaw Kochowski
Appl. Opt. 46(22) 5216-5227 (2007)

Detector effects in photothermal deflection experiments

Dorota Korte Kobylińska, Roman J. Bukowski, Jerzy Bodzenta, Stanisław Kochowski, and Anna Kaźmierczak-Balata
Appl. Opt. 47(10) 1559-1566 (2008)

Application of complex geometrical optics to determination of thermal, transport, and optical parameters of thin films by the photothermal beam deflection technique

Dorota Korte and Mladen Franko
J. Opt. Soc. Am. A 32(1) 61-74 (2015)

Polarization changing and beam profile deformation of light during the isotropic Raman–Nath acousto-optic interaction

Chen-Wen Tarn, Ray-Shu Huang, and Cheh-Wei Hsieh
Appl. Opt. 37(32) 7496-7503 (1998)

Acousto-optic interaction of a Gaussian laser beam with an ultrasonic wave of cylindrical symmetry

Ireneusz Grulkowski, Dawid Jankowski, and Piotr Kwiek
Appl. Opt. 46(23) 5870-5876 (2007)