Effective control over the dual-color emitted light waves from one-dimensional random media pumped by Femtosecond-Lasing Pulses

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• 作者：Hai Liu (1)
  Hongshuai Pan (1)
  Xiaocong Niu (1)
  Jiantao Lv (2)
  
• 关键词：Light modulation ; Local pumping ; Random laser ; Laser physics
• 刊名：Optical and Quantum Electronics
• 出版年：2014
• 出版时间：June 2014
• 年：2014
• 卷：46
• 期：6
• 页码：797-808
• 全文大小：
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• 作者单位：Hai Liu (1)
  Hongshuai Pan (1)
  Xiaocong Niu (1)
  Jiantao Lv (2)
  
  1. School of Information and Electrical Engineering, China University of Mining and Technology, Xuzhou聽, 221116, China
  2. School of Science, Foshan University, Foshan聽, 528000, China
  
• ISSN：1572-817X

文摘

The spectral property of dual-color random laser is investigated by simultaneously solving Maxwell鈥檚 equations and rate equations of electronic population in which the pumping rate is described by a time function with duration of hundreds of femtoseconds. Results show that the delay time and peak intensity of the emitted light depends strongly on the pumping process. An effective optimization method is proposed to exercise control over the dual-color laser emission from the dye solution with scattering nano-particles. It is demonstrated numerically that the controllable single mode operation of a dual-color random laser by choosing the proper pump profile and pumping region. The present work enriches the knowledge about random lasers and offers more guidance for relevant experiments.