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Shape of the photoacoustic signal generated due to multiphoton absorption of Gaussian laser pulses


Mathematical expressions for the shape and amplitude of a photoacoustic signal generated due to the multiphoton absorption of Gaussian laser pulses are derived. It was found that the sensitivity of a photoacoustic spectrometer increases in proportion to n 3/4 when changing from one-photon linear absorption to nonlinear multiphoton absorption, where n is the nonlinearity exponent. Calibration of the photoacoustic spectrometer used in the measurements of multiphoton absorption cross sections is discussed.

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  1. 1.

    V. P. Zharov and V. S. Letokhov, Laser Optical Acoustical Spectroscopy (Nauka, Moscow, 1984).

    Google Scholar 

  2. 2.

    J.-M. Heritier, “Electrostrictive Limit and Focusing Effects in Pulsed Photoacoustic Detection,” Opt. Commun. 44, 267–272 (1983).

    ADS  Article  Google Scholar 

  3. 3.

    G. J. Diebold, “Application of the Photoacoustic Effects to Studies of Gas Phase Chemical Kinetics,” in Photoacoustic, Phototermal and Photochemical Processes in Gases, Topics in Current Physics, Ed. by P. Hess (Springer, Berlin, 1989), Vol. 46, pp. 125–172.

    Chapter  Google Scholar 

  4. 4.

    A. C. Tam, “Signal Enhancement and Noise Suppression Considerations in Photothermal Spectroscopy,” in Photoacoustic and Photothermal Phenomena III, Springer Series in Optical Sciences, Vol. 69, Ed. by D. Bicanic (Berlin, Springer, 1992), pp. 447–462.

    Google Scholar 

  5. 5.

    N. B. Delone, Interacion of Laser Radiation with Matter (Nauka, Moscow, 1989).

    Google Scholar 

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Correspondence to A. E. Protasevich.

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Original Russian Text © A.E. Protasevich, B.A. Tikhomirov, 2011, published in Optica Atmosfery i Okeana.

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Protasevich, A.E., Tikhomirov, B.A. Shape of the photoacoustic signal generated due to multiphoton absorption of Gaussian laser pulses. Atmos Ocean Opt 24, 492 (2011).

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  • Linear Absorption
  • Nonlinear Absorption
  • Photoacoustic Signal
  • Multiphoton Absorption
  • Gaussian Intensity Distribution