Optimization for maximum Raman frequency conversion in supercontinuum sources using genetic algorithms

• F.R. Arteaga-Sierra ^[1] ; C. Millán ^[1] ; I. Torres-Gómez ^[2] ; M. Torres-Cisneros ^[1] ; H. Plasencia-Mora ^[1] ; G. Moltó ^[3] ; A. Ferrando ^[3]
  1. [1] Universidad de Guanajuato

     Universidad de Guanajuato

     México

     
  2. [2] Universitat de València

     Universitat de València

     Valencia, España

     
  3. [3] Universidad Politécnica de Valencia

     Universidad Politécnica de Valencia

     Valencia, España

     

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• Localización: Revista Mexicana de Física, ISSN-e 0035-001X, Vol. 63, Nº. 2, 2017, págs. 111-116
• Idioma: inglés
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• Resumen

  • A frequency convertor based on the soliton self-frequency shift by the supercontinuum generation is obtained by optimization of only three parameters of a Ti:Sapphire laser pulse, namely, carrier wavelength, peak power and time duration. The frequency conversion is performed and calculated by simulating the propagation of the pulse in a simple piece of 25 cm long commercial photonic crystal fiber pumped by the femtosecond Ti:Sapphire laser, whose only pre-requisite is to exhibit the standard supercontinuum. The resulting spectral broadening has a maximum spectral conversion in the anomalous region just by playing with the three realistic controllable parameters. Optimization is performed using pre-defined functions of genetic algorithms. Our results indicate that the efficiencies of Raman conversion achieved by merely optimizing the pulse parameters in a commercial fiber are comparable with those obtained in more elaborated Raman convertor devices.