title: Testing the energy conservation law in an optical parametric oscillator using phase-controlled femtosecond pulses.
abstract: An experimental verification of energy conservation in a parametric oscillator is reported with an optical frequency precision of approximately 200 kHz (< 10(-6) nm). This high precision is made possible by simultaneously measuring the frequency offsets of the pump, signal and idler frequency combs in a singly-resonant femtosecond optical parametric oscillator system.
authors.forename: Jinghua
authors.initials: J
authors.lastname: Sun
authors.forename: Barry J S
authors.initials: BJ
authors.lastname: Gale
authors.forename: Derryck T
authors.initials: DT
authors.lastname: Reid