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The dynamics of gain-coupled distributed feedback dye laser: Feedback mechanism and laser field evolution

Pasandideh, K ; Sharif University of Technology | 2018

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  1. Type of Document: Article
  2. DOI: 10.1088/1555-6611/aacd94
  3. Publisher: Institute of Physics Publishing , 2018
  4. Abstract:
  5. The temporal and spatial evolution of the two counter-propagating laser waves inside the active medium of a gain coupled distributed feedback dye laser is studied via a dynamic model. More specifically, the feedback mechanism, the temporal and spatial evolution of laser waves, the interaction between them, and the effect of pump pulse characteristics on the feedback strength are explained. It is shown that a pumping configuration with a spatial Gaussian pattern strongly decreases the laser pulse energy. This has never proposed or described by other models in the literature. For a narrow Gaussian pump pulse, the distributed feedback lasing on both sides of the active medium vanishes and causes further dissipation of stored energy in the form of spontaneous emission. © 2018 Astro Ltd
  6. Keywords:
  7. Distributed feedback (DFB) dye laser ; Dynamic model ; Feedback mechanism ; Dye lasers ; Dynamic models ; Dynamics ; Feedback control ; Counter propagating lasers ; Distributed feedback ; Distributed feedback dye laser ; Distributed-feedback lasing ; Feedback mechanisms ; Gaussian pump pulse ; Pumping configurations ; Temporal and spatial evolutions ; Optical pumping
  8. Source: Laser Physics ; Volume 28, Issue 9 , 2018 ; 1054660X (ISSN)
  9. URL: https://iopscience.iop.org/article/10.1088/1555-6611/aacd94