The beam profiles of pulsed lasers are currently measured using either complementary metal oxide semiconductor (CMOS) or charge coupled device (CCD) cameras. Despite providing high-resolution beam profiles, these devices cannot work with high power lasers. If additional optical attenuators are used, beam distortions may occur. In this paper we demonstrate a high-resolution photoacoustic technique capable of measuring the beam profile of pulsed lasers. The beam profiles of a pulsed neodymium-doped yttrium aluminium garnet (Nd:YAG) laser and a pulsed optical parametric oscillator (OPO) laser system were measured using a polydimethylsiloxane film and a single element high-frequency ultrasonic transducer. The advantages and limitations of the developed photoacoustic technique are discussed.
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Research Article| May 08 2009
Photoacoustic technique to measure beam profile of pulsed laser systems
Srivalleesha Mallidi, Stanislav Emelianov; Photoacoustic technique to measure beam profile of pulsed laser systems. Rev. Sci. Instrum. 1 May 2009; 80 (5): 054901. https://doi.org/10.1063/1.3125625
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