Open AccessEfficient 1620 nm continuous-wave laser operation of Czochralski grown Er:Yb:Lu_2Si_2O_7 crystal
Author(s) -
Jianhua Huang,
Yujin Chen,
Han Wang,
Yanfu Lin,
Xinghong Gong,
Zhixun Luo,
Yidong Huang
Publication year - 2017
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.25.024001
Subject(s) - materials science , slope efficiency , laser , crystal (programming language) , optics , continuous wave , laser diode , czochralski method , fluorescence , absorption (acoustics) , doping , absorption spectroscopy , optoelectronics , diode , quantum efficiency , analytical chemistry (journal) , fiber laser , wavelength , chemistry , physics , chromatography , computer science , composite material , programming language
Efficient continuous-wave diode-pumped laser operation of Czochralski grown Er:Yb:Lu 2 Si 2 O 7 crystal is reported. Polarized absorption and emission spectra, fluorescence lifetimes, and energy transfer efficiency from Yb 3+ to Er 3+ were determined. A maximal output power of 522 mW was achieved at 1620 nm with slope efficiency of 15.8% and absorbed pump threshold of 470 mW. Among the Er 3+ and Yb 3+ co-doped materials with long fluorescence lifetimes of the upper level 4 I 13/2 , which are candidates for gain media of pulsed laser around 1.55 μm with high energy, comprehensive performance of the Er:Yb:Lu 2 Si 2 O 7 crystal is the best till now.