Simultaneous parametric oscillation and signal-to-idler conversion for efficient downconversion.
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 quasiperiodic 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%.
Porat
Gil
G
Department of Physical Electronics, Fleischman Faculty of Engineering, Tel Aviv University, Tel Aviv 69978, Israel. gilporat@post.tau.ac.il
Gayer
Ofer
O
Arie
Ady
A