title: Long-term femtosecond timing link stabilization using a single-crystal balanced cross correlator.
abstract: We demonstrate a self-aligned balanced cross correlator based on a single type-II phase-matched periodically poled KTiOPO4 crystal. The birefringence of the crystal generates a walk-off between the two orthogonally polarized pulses. This enables the balancing of the cross correlator with input pulses at the same center wavelength. As a first application of this single-crystal balanced cross correlator, we stabilized a 310 m long optical fiber link for timing distribution with long-term stable 10 fs precision.
authors.affiliation: Department of Electrical Engineering and Computer Science and Research Laboratory of Electronics, Massachusetts Institute of Technology, MA 02139, USA. jungwon@mit.edu
authors.forename: J
authors.initials: J
authors.lastname: Kim
authors.forename: J
authors.initials: J
authors.lastname: Chen
authors.forename: Z
authors.initials: Z
authors.lastname: Zhang
authors.forename: F N C
authors.initials: FN
authors.lastname: Wong
authors.forename: F X
authors.initials: FX
authors.lastname: Kärtner
authors.forename: F
authors.initials: F
authors.lastname: Loehl
authors.forename: H
authors.initials: H
authors.lastname: Schlarb