We experimentally demonstrate an optical parametric oscillator, whose signal pumps another difference-frequency generation process. Engineered idler frequency coincidence of both processes in a single quasi periodic crystal improves pump-to-idler slope efficiency by 52.8%, from 15.25% to 23.3%, and pump-to-idler conversion efficiency (at an average pump power of 1.2 W) by 16.6%, from 12.5% to 14.58%.
© 2010 Optical Society of America
Original Manuscript: January 25, 2010
Revised Manuscript: March 10, 2010
Manuscript Accepted: March 13, 2010
Published: April 26, 2010
Gil Porat, Ofer Gayer, and Ady Arie, "Simultaneous parametric oscillation and signal-to-idler conversion for efficient downconversion," Opt. Lett. 35, 1401-1403 (2010)