Generation of High‐Order Laguerre‐Gaussian Modes from an Optical Vortex Pumped Diamond Raman Laser
Chuang Xuan, Yuxia Zhou, Xining Yang, Yuanyuan Ma, A. Srinivasa Rao, Takashige Omatsu, Zhenxu Bai, Ying Wan, Jianxiang Wen, Taximaiti Yusufu
Abstract
Abstract This work report the generation of high‐order Laguerre–Gaussian (LG) modes from a nanosecond, optical vortex pumped diamond Raman laser. This system is capable of generating first‐Stokes ( λ 1st = 1240 nm) LG modes with topological charge (ℓ) of up to 26 and second‐Stokes ( λ 2nd = 1485 nm) LG modes with topological charge of up to 22, when pumped using a first‐order vortex beam. The maximum first‐ and second‐Stokes LG mode energies are measured to be 0.5 and 1 mJ, respectively, when pumping with energy of 19.8 mJ.
Topics & Concepts
Raman laserOptical vortexVortexRaman spectroscopyNanosecondTopological quantum numberOpticsLaserPhysicsLaguerre polynomialsGaussianDiamondMaterials scienceBeam (structure)Raman scatteringQuantum mechanicsThermodynamicsComposite materialOrbital Angular Momentum in OpticsAdvanced Fiber Laser TechnologiesLaser-Matter Interactions and Applications