title: Photonic generation of millimeter and terahertz waves with high phase stability.
abstract: Optical generation of highly stable millimeter and terahertz waves is proposed and experimentally demonstrated. The optical-fiber-path-induced phase fluctuation is identically transferred to a 40 MHz intermediate frequency by using dual-heterodyne phase error transfer, then canceled by a phase-locked loop. Based on the scheme, highly stable signals within the frequency range from 25 GHz to 1 THz are generated, and the phase jitter is decreased from 2.05 rad to 4.7 mrad in the frequency range from 0.01 Hz to 1 MHz. For 1 THz, the residual phase noise reaches -60  dBc/Hz at 1 Hz frequency offset from the carrier, and the relative timing jitter is reduced to 0.7 fs.
authors.forename: Dongning
authors.initials: D
authors.lastname: Sun
authors.forename: Yi
authors.initials: Y
authors.lastname: Dong
authors.forename: Lilin
authors.initials: L
authors.lastname: Yi
authors.forename: Siwei
authors.initials: S
authors.lastname: Wang
authors.forename: Hongxiao
authors.initials: H
authors.lastname: Shi
authors.forename: Zongyang
authors.initials: Z
authors.lastname: Xia
authors.forename: Weilin
authors.initials: W
authors.lastname: Xie
authors.forename: Weisheng
authors.initials: W
authors.lastname: Hu