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    • Generation of ultrasonic waves in water by an elliptical Gaussian laser beam

      M S Sodha S Konar M P Verma V Rai

      Volume 42 Issue 2 February 1994 pp 141-148

    • Fulltext

       

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/pram/042/02/0141-0148

    • Keywords

       

      Thermal generation of sound; thermoacoustic source; far-field directivity pattern; directional acoustic sources

    • Abstract

       

      The paper presents an analysis of ultrasonic wave generation in water by intensity modulated elliptical Gaussian laser beams. It is found that generated acoustic radiation is highly directional both in polar and azimuthal directions. An increase in the assymmetry of the transverse intensity distribution from the Gaussian dependence enhances the source directivity considerably. An obvious conclusion is that elliptical Gaussian beams are better choice in applications where it is desired to communicate in an approximately prescribed small solid angle.

    • Author Affiliations

       

      M S Sodha1 2 S Konar1 3 M P Verma1 V Rai1

      1. School of Physics, Devi Ahilya Vishwavidyalaya, Khandwa Road, Indore - 452 001, India
      2. Lucknow University, Lucknow - 226 007, India
      3. School of Energy Studies, Devi Ahilya Vishwavidyalaya, Khandwa Road, Indore - 452 001, India

    • Dates

       
      Published
      February 1994
      Manuscript received
      24 May 1993
      Manuscript revised
      29 September 1993

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