Search for dissertations about: "wavelength modulation spectroscopy"

Showing result 1 - 5 of 16 swedish dissertations containing the words wavelength modulation spectroscopy.

  2. 1. Diode laser spectroscopy in extended wavelength ranges

    Author : Ulf Gustafsson; Atomfysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; diode-laser spectroscopy; frequency-modulation spectroscopy; frequency conversion; fluorescence spectroscopy; scattering; diffraction; Fysicumarkivet A:2000:Gustafsson; Atomic and molecular physics; Atom- och molekylärfysik; absorption spectroscopy;

    Abstract : Diode laser spectroscopy performed in the ultraviolet, visible and infrared spectral regions is presented. The accessible wavelength range for visible and near-infrared diode lasers is extended by the use of sum- and difference-frequency generation. READ MORE

  4. 2. Near-infrared gas analysis spectroscopy systems with semiconductor lasers

    Author : Lars Sandström; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; carbon dioxide; semiconductor lasers; wavelength modulation spectroscopy; NIR spectroscopy; Ammonia; frequency modulation spectroscopy; optical fiber; gas detection;

    Abstract : .... READ MORE

  5. 3. Laser Spectroscopy in Scattering Media for Biological and Medical Applications

    Author : Linda Persson; Atomfysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Instrumentation technology; Mät- och instrumenteringsteknik; Atom- och molekylärfysik; Atomic and molecular physics; Fysik; Physics; Monte Carlo simulations; Biomedical Optics; Scattering media; Gas measurements; Near infrared spectroscopy; Diode laser spectroscopy; Absorption spectroscopy;

    Abstract : Tunable diode laser absorption spectroscopy can be utilised for gas detection in biological and medical applications. The common approach is to analyse transmitted light according to the Beer-Lambertian law. READ MORE

  6. 4. Development of laser spectroscopy for scattering media applications

    Author : Mats Andersson; Atomfysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Laserteknik; Laser technology; Atom- och molekylärfysik; Atomic and molecular physics; Fysik; Physics; coherent sampling; optical sensor; light absorption; noninvasive measurement; diode laser; scattering of light; laser spectroscopy; fluorescence spectroscopy; remote sensing; Lidar; DIAL;

    Abstract : Laser spectroscopy for both large and small spatial scales has been developed and used in various applications ranging from remote monitoring of atmospheric mercury in Spain to investigation of oxygen contents in wood, human sinuses, fruit, and pharmaceutical solids. Historically, the lidar group in Lund has performed many differential absorption lidar (DIAL) measurements with a mobile lidar system that was first described in 1987. READ MORE

  7. 5. Environmental Monitoring - using diode-laser-based spectroscopic techniques

    Author : Gabriel Somesfalean; Atomfysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Diode-laser spectroscopy; frequency-modulation spectroscopy; frequency conversion; diffraction; scattering; Electromagnetism; acoustics; akustik; optik; absorption spectroscopy; Elektromagnetism; optics; Fysicumarkivet A:2004:Somesfalean;

    Abstract : Monitoring of environmental gases is necessary to understand the complex processes governing global warming and the impact of pollutant emissions related to human activity. Diode-laser-based spectroscopic techniques, being robust and affordable, have a great potential to become an industrially well-established technology for environmental sensing. READ MORE