title: Long-term measurement of optical frequencies using a simple, robust and low-noise fiber based frequency comb.
abstract: We have developed a fiber-based frequency comb system consisting of a simple mode-locked fiber laser and a backward pumping amplifier combined with a highly nonlinear fiber with a short zerodispersion wavelength. As a result, the signal to noise ratio of the obtained carrier-envelope-offset frequency beat is larger than 45 dB at a bandwidth of 100 kHz. Furthermore, we have succeeded in measuring the optical frequencies of a 1542-nm acetylene-stabilized laser and a 532-nm iodinestabilized Nd:YAG laser continuously for more than one week using the fiber-based comb system. The long-term measurement revealed that the frequency stability of the iodine-stabilized laser was 5.7 x 10(-15) with 100 000 s averaging.
authors.forename: Hajime
authors.initials: H
authors.lastname: Inaba
authors.forename: Yuta
authors.initials: Y
authors.lastname: Daimon
authors.forename: Feng-Lei
authors.initials: FL
authors.lastname: Hong
authors.forename: Atsushi
authors.initials: A
authors.lastname: Onae
authors.forename: Kaoru
authors.initials: K
authors.lastname: Minoshima
authors.forename: Thomas R
authors.initials: TR
authors.lastname: Schibli
authors.forename: Hirokazu
authors.initials: H
authors.lastname: Matsumoto
authors.forename: Masaaki
authors.initials: M
authors.lastname: Hirano
authors.forename: Toshiaki
authors.initials: T
authors.lastname: Okuno
authors.forename: Masashi
authors.initials: M
authors.lastname: Onishi
authors.forename: Masataka
authors.initials: M
authors.lastname: Nakazawa