2014/12/08 by Guoping Lin, Souleymane Diallo, Khaldoun Saleh +5 · 75 citations
Engineering · Physics and Astronomy · #Advanced Fiber Laser Technologies #Barium fluoride #Brillouin scattering #Brillouin zone #Laser #Lasing threshold #Materials science #Mechanical and Optical Resonators #Optics #Optoelectronics #Photonic and Optical Devices #Physics #Q factor #Resonator #Whispering-gallery wave #physics.optics
paper · pdf · doi:10.1063/1.4903516
published in Applied Physics Letters 105(23) (American Institute of Physics)
openalex publication_date 2014/12/08 · arxiv created 2015/01/10 · arxiv updated 2015/01/13 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We report the observation of stimulated Brillouin scattering and lasing at 1550 nm in barium fluoride (BaF2) crystal. Brillouin lasing was achieved with ultra-high quality (Q) factor monolithic whispering gallery mode mm-size disk resonators. Overmoded resonators were specifically used to provide cavity resonances for both the pump and all Brillouin Stokes waves. Single and multiple Brillouin Stokes radiations with frequency shift ranging from 8.2 GHz up to 49 GHz have been generated through cascaded Brillouin lasing. BaF2 resonator-based Brillouin lasing can find potential applications for high-coherence lasers and microwave photonics.