title: Broadly tunable mode-hop-free mid-infrared light source with MgO:PPLN continuous-wave optical parametric oscillator.
abstract: We report a continuous-wave, broadly tunable mid-infrared MgO:PPLN optical parametric oscillator pumped by a fiber amplifier. Using pump tuning with synchronized temperature optimization, we achieve the broadest mode-hop-free (MHF) tuning of idler light over 30 cm(-1). We further use this tunable mid-infrared laser to demonstrate high-resolution absorption spectroscopy of methane across the MHF tuning range.
authors.affiliation: Department of Physics, University of California at Berkeley, Berkeley, California 94720, USA.
authors.forename: Xiaoping
authors.initials: X
authors.lastname: Hong
authors.forename: Xinglai
authors.initials: X
authors.lastname: Shen
authors.forename: Mali
authors.initials: M
authors.lastname: Gong
authors.forename: Feng
authors.initials: F
authors.lastname: Wang