We report the operation of a bidirectional femtosecond pulsed ring optical parametric oscillator based on periodically poled lithium niobate, pumped alternately with nonsimultaneous pulses from a Ti:sapphire mode-locked laser. A beat note between the two counterpropagating beams attests to a gyro response without dead band. The sensitivity of the device to differential phase changes is demonstrated by measurement of the nonlinear index of lithium niobate.
© 2001 Optical Society of America
Xianmei Meng, Jean-Claude Diels, Dietrich Kuehlke, Robert Batchko, and Robert Byer, "Bidirectional, synchronously pumped, ring optical parametric oscillator," Opt. Lett. 26, 265-267 (2001)