Frequency Division in the Optical Frequency Region and Generation of Phase-Locked High Harmonics

Abstract

We generate phase-locked five harmonics, 2403, 1201, 801, 600, and 480 nm, in the optical frequency region by employing a method of frequency division. The generated harmonics have a wide frequency spacing of 125 THz including the fundamental mode that can generate ultrahigh-repitition-rate arbitrary optical waveforms in the continuous generation regime.