2013/06/27 by Jinwei Shi, Shi, Jinwei, Shujing Chen +9
Engineering · Physics and Astronomy · #FOS: Physical sciences #Optics (physics.optics) #Random lasers and scattering media #Semiconductor Lasers and Optical Devices #Solid State Laser Technologies #physics.optics
paper · pdf · doi:10.48550/arxiv.1306.6414
arxiv created 2013/06/27 · openalex publication_date 2013/06/27 · arxiv updated 2013/06/28 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
A new kind of mechanism of lasing is investigated experimentally. It is quite different from the traditional laser with cavity and the random laser with random scattering. In this mechanism, the intensity-dependent refractive index effect and thermal lensing effects of the pump beam induce a large gradient of the refractive index in the gain material, which forms a passive equivalent boundary that provides the feedback in the lasing system. A real lasing system, a liquid disk laser, is performed, it achieves 2-D omnidirectional radiation with a high efficiency of 28%, its radiation spectral property can be explained by resonant Raman scattering.