Compact yellow-orange Nd:YVO4 / PPMgLN laser at 589nm

Abstract:

In the paper, we propose and make a compact yellow-orange laser of the Nd:YVO4/PPMgLN module by Raman frequency-doubling at 589 nm for the first time. By reasonably designing the size of the Nd-doped Yttrium Vanadate (Nd:YVO4) and 5 mol% Mg-doped periodically poled lithium niobate (PPMgLN) crystals, cavity length and coating parameter, a compact 589 nm laser module with a total size of 3 *10 *1.5 mm3 is fabricated. In the laser module, the input surface of Nd:YVO4 crystal is end-pumped by an 808 nm laser diode (LD). Under the effect of linear resonant cavity structure, the output surface of PPMgLN crystal with a period of 9.48 μm generates 589 nm yellow-orange light. The experimental results show that the maximum output power at 589 nm is 390 mW at the pump power of 3 W with the optical-optical conversion efficiency of 13% and the stabililty of the output power is less than 2% within 3 h.

Key words:Raman frequency doubling ;PPMgLN ;laser module;589nm ;