title: Frequency-comb-assisted broadband precision spectroscopy with cascaded diode lasers.
abstract: Frequency-comb-assisted diode laser spectroscopy, employing both the accuracy of an optical frequency comb and the broad wavelength tuning range of a tunable diode laser, has been widely used in many applications. In this Letter, we present a novel method using cascaded frequency agile diode lasers, which allows us to extend the measurement bandwidth to 37.4 THz (1355-1630 nm) at megahertz resolution with scanning speeds above 1 THz/s. It is demonstrated as a useful tool to characterize a broadband spectrum for molecular spectroscopy, and in particular it enables us to characterize the dispersion of integrated microresonators up to the 4th-order.
authors.forename: Junqiu
authors.initials: J
authors.lastname: Liu
authors.forename: Victor
authors.initials: V
authors.lastname: Brasch
authors.forename: Martin H P
authors.initials: MH
authors.lastname: Pfeiffer
authors.forename: Arne
authors.initials: A
authors.lastname: Kordts
authors.forename: Ayman N
authors.initials: AN
authors.lastname: Kamel
authors.forename: Hairun
authors.initials: H
authors.lastname: Guo
authors.forename: Michael
authors.initials: M
authors.lastname: Geiselmann
authors.forename: Tobias J
authors.initials: TJ
authors.lastname: Kippenberg