Use of Pulsed Photoacoustic Technique for the Study of Nonlinear Processes in Liquids
نویسنده
چکیده
Pulsed photoacoustic measurements have been carried out in toluene, benzene and carbon disulphide liquids using 532 nm radiation from a Q-switched frequency doubled Nd:YAG laser. The present chapter deals with the detection and analysis of the photoacoustic effect in certain organic liquids in the visible region. The variation of photoacoustic signal am plitude with incident laser power indicates the involvement of the multiphoton absorption in the generation of photoacoustic signal. The studies made here demonstrate that pulsed photoacoustic technique is a simple and effective toll for the investigation of multiphoton processes in liquids.
منابع مشابه
Pulsed photoacoustic technique to study nonlinear processes in liquids: Results in toluene
Abstract. Pulsed photoacoustic measurements have been carried out in toluene at 532 nm wavelength using a Q-switched frequency doubled Nd:YAG laser. The variation of photoacoustic signal amplitude with incident laser power indicates that at lower laser powers one photon absorption takes place at this wavelength while a clear two photon absorption occurs in this liquid at higher laser powers. Th...
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تاریخ انتشار 2014