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      Permanent link:
      https://www.ias.ac.in/article/fulltext/pram/055/03/0413-0421

    • Keywords

       

      Non-linear optics; ultraviolet radiation; tangential phase-matching; Sellmeier dispersion

    • Abstract

       

      Tangential phase-matching has been realised in cesium lithium borate (CLBO) crystal for the first time for the generation of fourth harmonic (266 nm) of Nd:YAG and third harmonic (226.7 nm) of a dye laser radiation by second harmonic generation and sum-frequency mixing with the angular tolerance as large as 22 mrad and 21 mrad respectively, over one of the interacting beams. An energy conversion efficiency of 15% for fourth harmonic generation is obtained with a 5.5 mm thick crystal and with the average pump powers only 170 and 70 mW. A set of Sellmeier dispersion equations for the CLBO crystal have also been formulated.

    • Author Affiliations

       

      Gopal C Bhar1 Pathik Kumbhakar1 2 Anil K Chaudhary1

      1. Laser Laboratory, Physics Department, Burdwan University, Burdwan - 713 104, India
      2. Regional Engineering College, Durgapur, Burdwan - 713 209, India

    • Dates

       
      Published
      September 2000
      Manuscript received
      8 March 2000
      Manuscript revised
      29 June 2000

  • Pramana – Journal of Physics | News

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      Posted on July 25, 2019

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