title: Attosecond relative timing jitter and 13 fs tunable pulses from a two-branch Er:fiber laser.
abstract: We present what is believed to be the first direct measurement of the relative timing jitter between the two parallel pulse trains of a two-branch femtosecond erbium-doped fiber laser, operated without active stabilization. The system provides independently tunable pulses in the near infrared with durations down to 13 fs. Using an interferometric optical cross-correlator, the phase-noise spectral density is measured with high sensitivity in a range from 1 Hz up to the Nyquist frequency of 24.5 MHz. We find an integrated jitter of 11 attoseconds directly after the amplifier stages and 43 as after propagation through free-space optics and nonlinear fibers for frequency conversion.
authors: Department of Physics and Center for Applied Photonics, University of Konstanz, Universitätsstrasse 10, 78464 Konstanz, Germany. florian.adler@uni-konstanz.de
authors: Florian
authors: F
authors: Adler
authors: Alexander
authors: A
authors: Sell
authors: Florian
authors: F
authors: Sotier
authors: Rupert
authors: R
authors: Huber
authors: Alfred
authors: A
authors: Leitenstorfer