Characteristics of Nd:GdVO4 Laser with Different Nd-Doping Concentrations

• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2006,（8）
• 页码范围: 2088-2091
• 页数: 4页
• 语种: 英文

摘要

We report the properties of a compact diode-pumped continuous-wave Nd:GdVO4 laser with a linear cavity and different Nd-doped laser crystals. In a 0.2at.% Nd-doped Nd:GdVO4 laser, 1.54 W output laser power is achieved at 912nm wavelength with a slope efficiency of 24.8% at an absorbed pump power of 9.4 W. With 0.3at.% Nd-doping concentration, we can obtain the either single-wavelength emission at 1064nm or 912nm or the dual-wavelength emission at 1064 nm and 912nm by controlling the incident pump power. From an incident pump power of 11.6 W, the 1064nm emission between 4F3/2 and 4I11/2 is suppressed completely by the 912nm emission between 4F3/2 and 4I9/2. We obtain 670mW output of the 912nm single-wavelength laser emission with a slope efficiency of 5.5% by taking an incident pump power of 18.4 W. Using a Nd:GdVO4 laser with 0.4at.% Nd-doping concentration, we obtain either the single-wavelength emission at 1064nm or the dual-wavelengt hemission at both 1064 nm and 912nm by increasing the incident pump power. We observe a strong competition process in the dual-wavelength laser.