A Nd:YVO4 crystal was pumped directly into the emitting level by a laser diode at 914 nm for the first time to our knowledge. We achieved an output power of 11.5 W at 1064 nm for an absorbed pump power of 14.6 W, corresponding to an optical efficiency of 78.7%. We demonstrated that thermal effects are very weak, in agreement with the low quantum defect of only 14.1%.
© 2009 Optical Society of America
Lasers and Laser Optics
Original Manuscript: April 8, 2009
Manuscript Accepted: May 21, 2009
Published: July 9, 2009
Damien Sangla, Marc Castaing, François Balembois, and Patrick Georges, "Highly efficient Nd:YVO4 laser by direct in-band diode pumping at 914 nm," Opt. Lett. 34, 2159-2161 (2009)