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Tuning of random lasers by means of external magnetic fields based on the Voigt effect

Ghasempour Ardakani, A ; Sharif University of Technology | 2013

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  1. Type of Document: Article
  2. DOI: 10.1016/j.optlastec.2012.08.025
  3. Publisher: 2013
  4. Abstract:
  5. It has been proposed that emission spectrum of random lasers with magnetically active semiconductor constituents can be made tunable by external magnetic fields. By employing the FDTD method, the spectral intensity and spatial distribution of electric field are calculated in the presence of an external magnetic field. It is numerically shown that due to the magneto-optical Voigt effect, the emission spectrum of a semiconductor-based random laser can be made tunable by adjusting the external magnetic field. The effect of magnetic field on the localization length of the laser modes is investigated. It is also shown that the spatial distribution of electric field exhibited remarkable modification with variation of magnetic field
  6. Keywords:
  7. FDTD method ; Semiconductor layer ; Voigt effect ; Effect of magnetic field ; Emission spectrums ; External magnetic field ; Localization length ; Magneto-optical ; Random lasers ; Semiconductor layers ; Spectral intensity ; Voigt effects ; Electric fields ; Emission spectroscopy ; Finite difference time domain method ; Laser beams ; Lasers ; Spatial distribution ; Magnetic fields
  8. Source: Optics and Laser Technology ; Volume 47 , April , 2013 , Pages 121-126 ; 00303992 (ISSN)
  9. URL: http://www.sciencedirect.com/science/article/pii/S0030399212003775