We demonstrate a multiwavelength laser in the green-yellow region by means of a diode-pumped neodymium-doped yttrium aluminum garnet laser. This laser system combines a homemade 1074 nm and 1112 nm dual-wavelength laser with extracavity second harmonic generation (SHG) or sum-frequency generation in a lithium triborate crystal to generate visible output at any one of three wavelengths, 537 nm, 546 nm, and 556 nm, by simple temperature tuning, which has an important application in detecting carbon monoxide. The maximum average output power at the three wavelengths (537 nm, 546 nm, and 556 nm) was obtained to be 10.5 W, 0.5 W, and 8.5 W, respectively. The maximum SHG conversion efficiency from the infrared to the visible spectral region was about 51%.
© 2012 Optical Society of America
Lasers and Laser Optics
Original Manuscript: March 22, 2012
Revised Manuscript: May 15, 2012
Manuscript Accepted: May 15, 2012
Published: June 18, 2012
Zhichao Wang, Feng Yang, Shiyong Xie, Yiting Xu, Jialin Xu, Yong Bo, Qinjun Peng, Jingyuan Zhang, Dafu Cui, and Zuyan Xu, "Multiwavelength green-yellow laser based on a Nd:YAG laser with nonlinear frequency conversion in a LBO crystal," Appl. Opt. 51, 4196-4200 (2012)