High power resonantly diode-pumped σ -configuration Er3+:YVO4 laser at 1593.5 nm

Abstract

Laser operation of an eyesafe 1593.5-nm laser based on Er 3+ -doped yttrium orthovanadate single crystal resonantlypumped by a spectrally-narrowed InGaAsP/InP diode bar stack is demonstrated for the first time. Cryogenicallycooled Er 3+ :YVO4 laser pumped at 1534 nm performed with maximum slope efficiency of ∼ 70% and maximum quasicontinuous-wave (Q-CW) power of 59.8 W. Laser output versus absorbed pump power (Q-CW) for the resonantly diode-pumped cryogenically cooled Er 3+ (0.5%):YVO4 laser

Study of Yb:YVO4 lasers end-pumped by a 985-nm diode laser

“…Besides the use of host for the Nd ion, the crystal of YVO 4 also proves to be effective laser medium when doped with Er, or with Tm and Ho. Very efficient oper ation was attained with a resonantly pumped Er:YVO 4 laser under low temperature conditions [10]. About 20 W of CW or Q switched pulsed output power were generated with a Tm, Ho:YVO 4 laser operating at cryo genic temperature [11]; with a InGaAs/GaAs satura ble absorber passively Q switched mode locking laser action was also achieved with Tm, Ho:YVO 4 crystal [12].…”

1645 nm Q-Switched resonantly pumped Er:YAG laser

“…Transitions from the 4 I 13/2 to the 4 I 15/2 energy level in Er 3+ are well known to produce emission in the 1.5-1.6 µm region [3][4]. Er:YAG is an attractive laser medium for a hybrid laser owing to its robust thermomechanical properties [5][6][7].…”

Room temperature, multi-wavelength operation in Er:YAG

“…Crystals with Er 3+ doping are attractive active materials for such developments [3,4]. YAG is an excellent host for Er lasers [5][6][7].…”