title: High-power, tunable difference frequency generation source for absorption spectroscopy based on a ridge waveguide periodically poled lithium niobate crystal.
abstract: A novel waveguide for difference frequency generation in the mid-IR spectral region at 3.52 mum is characterized. High mid-IR power of 15 mW and an external conversion efficiency of up to 19 %W( -1) have been obtained. An optical beam propagation factor M(2) =1.18 was determined using the second moment method. A simple 2-f absorption spectra demonstrates the potential of this mid-IR source for high precision trace gas sensing applications.
authors.forename: Dirk
authors.initials: D
authors.lastname: Richter
authors.forename: Petter
authors.initials: P
authors.lastname: Weibring
authors.forename: Alan
authors.initials: A
authors.lastname: Fried
authors.forename: Osamu
authors.initials: O
authors.lastname: Tadanaga
authors.forename: Yoshiki
authors.initials: Y
authors.lastname: Nishida
authors.forename: Masaki
authors.initials: M
authors.lastname: Asobe
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Suzuki