High-efficiency Nd:GdVO4 laser at 1341nm under 880nm diode laser pumping into the emitting level

We report a high-efficiency Nd:LuVO 4 laser operating at 1066 and 1343 nm, respectively, direct pumped by a diode laser at 880 nm. The maximum outputs of 10.5 and 7.0 W, at 1066 and 1343 nm, respectively, are obtained in a 8-mm-thick 0.4 at.% Nd:LuVO4 crystal with 16.9 W of absorbed pump power at 880 nm, leading to a high slope efficiency with respect to the absorbed pump power of 64.4 and 44.5%. Under traditional pumping at 809 nm, the maximum outputs of 9.8 and 6.2 W, at 1066 and 1343 nm respectively, are obtained with 19.3 W of absorbed pump power, corresponding to the slope efficiency with respect to the absorbed pump power of 54.9 and 34.9%.

Section: Introductionmentioning

confidence: 99%

All-solid-state Nd:LuVO4 laser operating at 1066 nm and 1343 nm under diode pumping into the emitting level

Zhang

Chen

et al. 2010

“…In the result the opto-optic conversion efficiency has been remarkably enhanced comparing with pumping by 808 nm [11][12][13][14]. Because of Stark splitting ( Fig.…”

Section: Introductionmentioning

confidence: 93%

Low heat and high efficiency Nd:GdVO4 laser pumped by 913 nm

Xiong

Guo

et al. 2010

A Nd:GdVO 4 crystal is pumped directly into its emitting level at 913 nm for the first time to the best of our knowledge. 3.35 W output laser emitting at 1063 nm is achieved in a 1.1 at.% Nd-doped Nd:GdVO 4 . The crystal absorbs pumping light of 4.30 W at 913 nm and produces a very low quantity of heat with the opto-optic conversion efficiency of 77.2%. The average slope efficiency is 81.2% from 0.21 W, at the threshold, to 4.30 W of absorbed pump power. Because of the very weakly thermal effect, the near-diffraction-limit beam is easily obtained with beam quality factor of M 2 ≈ 1.1. The output power and the temperature of crystal versus the absorbed pump power

“…In neodymium-doped crystals the transition offering the lowest wavelengths is the 4 F 3/2 -4 I 9/2 . This transition is usually used to design lasers around 910 nm in vanadate crystals [13][14][15][16][17][18] or at 946 nm in YAG crystal [19][20][21][22]. In these cases, the laser system is a quasi-three-level one, the lower laser level of the transition being the highest sublevel of the fundamental manifold.…”

Section: Introductionmentioning

confidence: 99%

Diode-pumped Nd:YAG/BiB₃O₆deep-blue laser at 449.5 nm

Zhang

Chen

et al. 2010

We report a diode-pumped Nd:YAG laser emitting at 899 nm based on the 4 F 3/2 -4 I 9/2 transition. A power of 1.04 W at 899 nm has been achieved in continuous-wave operation with a fiber-coupled laser diode emitting 19.2 W at 809 nm. Furthermore, intracavity second-harmonic generation in continuouswave mode has also been demonstrated with a power of 284 mW at 449.5 nm by using a BiB 3 O 6 (BiBO) nonlinear crystal. The fluctuation of the blue output power was better than 2.8%. The beam quality M 2 value is 1.3.