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      Permanent link:
      https://www.ias.ac.in/article/fulltext/pram/063/05/1003-1010

    • Keywords

       

      Non-linear mirror; mode-locking; Q-switching; powder SHG

    • Abstract

       

      A non-linear mirror consisting of a lithium triborate crystal and a dichroic output coupler are used to mode-lock (passively) an Nd : YVO4 laser, pumped by a diode laser array. The laser can operate both in cw mode-locked and simultaneously Q-switched and mode-locked (QML) regime. The peak power of the laser while operating in QML regime is much higher but pulses suffers from poor amplitude stability. The incorporation of an acousto-optic modulator as an active Q-switch enhances the stability of the QML pulse envelope. The second-order non-linearity of powdered crystalline urea is conclusively measured with respect to KDP while the laser is operating in passively Q-switched and passively mode-locked regime as well as in actively Q-switched and passively mode-locked regime.

    • Author Affiliations

       

      P K Datta1 Chandrajit Basu1 S Mukhopadhyay1 S K Das1 G K Samanta1 Antonio Agnesi2

      1. Department of Physics and Meteorology, Indian Institute of Technology, Kharagpur - 721 302, India
      2. Department of Electronics, University of Pavia, Via Ferrata 1, Pavia - 27100, Italy
    • Dates

       
  • Pramana – Journal of Physics | News

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      Posted on July 25, 2019

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