A new composite YVO₄/Nd:Y_0.9La_0.1VO₄crystal laser end-pumped with a fiber coupled diode array

Abstract

A diode end-pumped continuous wave and acousticoptical Q-switched YVO4/Nd:Y0.9La0.1VO4 crystal lasers are first demonstrated at 1064 nm with a compact planar-planar cavity. The continuous and acoustic-optical Q-switched output characteristics have been investigated with different output couplers. The maximum continuous wave power of 12.26 W is obtained at the incident pump power of 21.7 W, corresponding to optical to optical conversion efficiency of 56.5%. For Q-switching operation, at the incident pump power of 21.7 W, the shortest pulse is 7 ns at 1 kHz and 80% transmission, the maximum average output power is 12.07 W at 100 kHz and 30% transmission, and the highest peak power is 1.076 MW at the 1 kHz repetition rates and 50% output transmission. CW laser output characteristics for three different transmissions at 30%, 50%, and 80%, respectively

Synthesis and the luminescent properties of the Nd3+ ions doped three kinds of fluoride nanocrystals in organic solvents

“…The organic solvent is safer than the inorganic ones, but the CAH and OAH bands from the organic solvent and ligands can quench the luminescence of the Nd 3+ ions easily, so the lifetime of this kind of material usually is very short and the quantum efficiency is very low [7]. Over the past few years, more and more rare-earth doped nanocrystals (NCs) are emerging with very promising properties for amplification and laser emission in active integrated optical devices [8][9][10]. Especially, it is worth noting that the rare-earth doped NCs can be used as the liquid laser medium by surface modifying to make the nanoparticles water-soluble or oil-soluble, and also keep the high luminescent efficiency [11,12].…”

Passively Q-switched laser operation in a composite Nd:YVO4/Nd:YVO4/Nd:YVO4 crystal with a GaAs saturable absorber

“…By means of composite crystal, maximum laser incident power can be increased as thermal damage does not occur on pumped end or face of the composite crystal. There have had many theoretical and experimental studies on composite crystal [8][9][10][11].…”

Study of the laser performance of a novel mixed Nd:Y0.8Lu0.2VO4crystal

“…This kind of laser can be achieved by an active or passive Q-switching technique [1][2][3][4]. The laser output parameters of the pulse duration, output peak power and average power vary according to the Q-switch frequencies.…”