Combination of a continuous-wave optical parametric oscillator and a femtosecond frequency comb for optical frequency metrology.
We combined a tunable continuous-wave optical parametric oscillator and a femtosecond Ti:sapphire laser frequency comb to provide a phase-coherent bridge between the visible and the mid-infrared spectral ranges. As a first demonstration of this new technique we performed a direct frequency comparison between an iodine-stabilized Nd:YAG laser at 1064 nm and an infrared methane optical frequency standard at 3.39 microm.
Kovalchuk
E V
EV
Institut für Physik, Humboldt-Universität zu Berlin, Germany. evgeny.kovalchuk@physik.hu-berlin.de
Schuldt
T
T
Peters
A
A