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The effect of pulsewidth of pumping pulse on the stability of distributed feedback dye laser

Pasandideh, K ; Sharif University of Technology | 2017

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  1. Type of Document: Article
  2. DOI: 10.1088/1555-6611/aa5ceb
  3. Publisher: Institute of Physics Publishing , 2017
  4. Abstract:
  5. The generation of a single and stable picosecond pulse by distributed feedback dye laser is investigated in this work. The numerical result for the rate equation system that includes the thermal effects in the lasing medium is provided. By applying this model to Rhodamine 6G, it is found that considerable improvement in the stability of the laser can be achieved by pumping the system with narrower laser pulses. The simulation shows that if the dye solution is pumped by sub-200 ps pulse, the laser can be operated in single-pulse output mode with acceptable stability in pulsewidth over a long range of pumping intensity. This result is confirmed by a more complicated model composed of non-averaged Maxwell and rate equations. Even though the thermal effects do not play a significant role in equivalent cavity lifetime, they result in considerable wavelength shift toward the shorter wavelengths. © 2017 Astro Ltd Printed in the UK
  6. Keywords:
  7. Picosecond pulse ; Rhodamine 6G ; Dye lasers ; Feedback ; Maxwell equations ; Pumping (laser) ; Ultrashort pulses ; Cavity lifetimes ; Distributed feedback dye laser ; Numerical results ; Pico-second pulse ; Pumping intensity ; Rhodamine 6G ; Shorter wavelength ; Wavelength shift ; Optical pumping
  8. Source: Laser Physics ; Volume 27, Issue 4 , 2017 ; 1054660X (ISSN)
  9. URL: http://iopscience.iop.org/article/10.1088/1555-6611/aa5ceb