35 W continuous-wave Ho:YAG single-crystal fiber laser
Yongguang Zhao, Li Wang, Weidong Chen, Jianlei Wang, Qingsong Song, Xiaodong Xu, Ying Liu, Deyuan Shen, Jun Xu, Xavier Mateos, Pavel Loiko, Zhengping Wang, Xinguang Xu, Uwe Griebner, Valentin Petrov
Abstract
We report on a high-power Ho:YAG single-crystal fiber (SCF) laser inband pumped by a high-brightness Tm-fiber laser at 1908 nm. The Ho:YAG SCF grown by the micro-pulling-down technique exhibits a propagation loss of $0.05\pm 0.005~\text{cm}^{-1}$ at $2.09~\unicode[STIX]{x03BC}\text{m}$ . A continuous-wave output power of 35.2 W is achieved with a slope efficiency of 42.7%, which is to the best of our knowledge the highest power ever reported from an SCF-based laser in the 2 $\unicode[STIX]{x03BC}\text{m}$ spectral range.
Topics & Concepts
UnicodeMaterials scienceLaserContinuous waveOpticsFiber laserFiberBrightnessCrystal (programming language)OptoelectronicsPhysicsComputer scienceComposite materialProgramming languageNatural language processingSolid State Laser TechnologiesPhotonic Crystal and Fiber OpticsAdvanced Fiber Laser Technologies