Sodium D₂resonance radiation based on intracavity sum-frequency-mixing laser operation in Nd:GdVO₄–Nd:YLiF₄crystals

Abstract

We present a laser architecture to obtain continuous-wave orange-yellow radiation at 589 nm. A 808 nm diode-pumped the Nd:GdVO 4 crystal emitting at 1341 nm. A part of the pump power was then absorbed by the Nd:GdVO 4 crystal. The remainder was used to pump the Nd:YLiF 4 (Nd:YLF) crystal emitting at 1053 nm. Intracavity sum-frequency-mixing at 1341 and 1053 nm was then realized in a LiB 3 O 5 (LBO) crystal to produce orange-yellow radiation. We obtained a continuous-wave output power of 352 mW at 589 nm with a pump laser diode emitting 18.4 W at 808 nm.

Diode-pumped quasi-three-level Nd:GdV O4–Nd:YAG sum-frequency laser at 464 nm

“…Coherent continuous-wave (cw) light sources in the visible region are important for a number of scientific and technical applications including metrology, remote sensing, biotechnology, communications and display technology [1][2][3][4][5][6]. In the past few years, new solid state lasers have been designed to enlarge the choice of wavelengths, for example, in the yellow range [7][8][9][10], or to improve sources that have already been used, as in the blue range [11][12][13][14]. Lasers in the blue spectral region are of special interest for high-density optical storage, laser-based display devices and Raman spectroscopy.…”

Laser Raman intracavidade bombeado lateralmente emitindo na região do amarelo

“…Porem tais esquemas devem ser menos flexíveis do que usar cristais separados, em que diferentes tamanhos de modo não podem ser usados para otimizar os dois processos. Todavia estes GdVO4[37], e foi de 4,3 W e eficiência óptica de 17% obtida em 590 nm.Outro trabalho[38] com bons resultados alcançou 3,5 W de potência de saída e eficiência óptica de 13,3% com um cristal laser Raman intrínseco de Nd:LuVO4. Kores et.…”