title: Tunable single-frequency diode laser at wavelength lambda = 1.645 microm for methane concentration measurements.
abstract: This paper deals with the development of a novel single-frequency tunable diode laser with fiber-optic output for gas-analysis applications. The approach we propose is a convenient, simple and cheap solution for spectroscopy of single absorption lines of any gases having absorption bands in the optical fiber transparency window (0.7 microm/1.7 microm). The presence of fiber-optic output is an additional advantage for remote sensing applications. The laser operation is demonstrated as applied to R7 line of 2 nu(3) methane absorption band at lambda = 1.645 microm. The mode-hop-free tuning range of 35 GHz (1.2 cm(-1)) has been achieved.
authors.affiliation: Fiber Optics Research Center, General Physics Institute of the Russian Academy of Sciences, 38 Vavilov St., 119991 Moscow, Russia. alexglad@fo.gpi.ru
authors.forename: A V
authors.initials: AV
authors.lastname: Gladyshev
authors.forename: M I
authors.initials: MI
authors.lastname: Belovolov
authors.forename: S A
authors.initials: SA
authors.lastname: Vasiliev
authors.forename: E M
authors.initials: EM
authors.lastname: Dianov
authors.forename: O I
authors.initials: OI
authors.lastname: Medvedkov
authors.forename: A I
authors.initials: AI
authors.lastname: Nadezhdinskii
authors.forename: O V
authors.initials: OV
authors.lastname: Ershov
authors.forename: A G
authors.initials: AG
authors.lastname: Beresin
authors.forename: V P
authors.initials: VP
authors.lastname: Duraev
authors.forename: E T
authors.initials: ET
authors.lastname: Nedelin
mesh_terms: D007834:Lasers; D008697:Methane / Q000032:analysis*; D013057:Spectrum Analysis / Q000295:instrumentation
chemical_list: D008697:Methane