Results 191 to 200 of about 17,184 (237)
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Diode laser overtone spectroscopy of CO2 at 780nm
Journal of Quantitative Spectroscopy and Radiative Transfer, 2005Overtone absorption lines of 12C^16O^2 have been examined by using a tunable diode laser (TDL) spectrometer in the region around 12770 cm^-1. The spectrometer sources are commercially available double heterostructure InGaAlAs TDLs operating in "free-running" mode, which allowed the detection of the line positions within 0.01 cm^-1.
A.Lucchesini, S.Gozzini
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A compact NIR fiber-optic diode laser spectrometer for CO and CO2:
Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy, 2004Rainer Engelbrecht
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Diode laser spectroscopy of CO2 in the region for the in situ sensing of the middle atmosphere
Journal of Quantitative Spectroscopy and Radiative Transfer, 2004V Zéninari, B Parvitte
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Dynamics of the CO2 lower laser levels as measured with a tunable diode laser
Applied Physics B Photophysics and Laser Chemistry, 1983A tunable diode laser operating in the 4.3 μm region is used to probe a conventional cw CO2 laser discharge. Vibrational populations in the 1000, 0200, 0220, and 0110 levels of CO2 are measured under lasing conditions, i.e., in the presence of intense 10.4 and 9.4 μm fields.
C. Dang, J. Reld, B. K. Garside
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CO2 and diode laser welding of AZ31 magnesium alloy
Applied Surface Science, 2005Magnesium alloys are being increasingly used in automotive and aerospace structures. Laser welding is an important joining method in such applications. There are several kinds of industrial lasers available at present, including the conventional CO2 and Nd:YAG lasers as well as recently available high power diode lasers. A 1.5 kW diode laser and a 2 kW
Zhu, Jinhong, Li, Lin, Liu, Zhu
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Molecular Spectroscopy Using Diode and Combined Diode-CO2 Lasers
1981An increasing number of molecules have been detected in interstellar space and envelopes of stars using radio and infrared techniques in astronomy [1]. It is apparent that extensive laboratory studies of these molecules, and others thought susceptible of being in space, are warranted as an aid in the identification and understanding of newly discovered
G. Winnewisser +4 more
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Diode laser measurements of a pulse TEA CO 2 laser linewidth
SPIE Proceedings, 1991Abstract A new technique to measure spectral linewidths of pulsed IR lasers is described. The results for the linewidth Γ of a TEA CO 2 laser are presented. The value of Γ =0.013±0.002 cm -1 obtained experimentally is in a good agreement with the results of model calculations.
A.V. Kunets +4 more
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Infrared diode laser absorption features of N2O and CO2 in a laval nozzle
Applied Physics B Photophysics and Laser Chemistry, 1992Design and operation of a pulsed Laval nozzle and the characterization of molecular flow through such a nozzle using IR tunable diode laser (TDL) is the central theme of this work. The results here deal with He diluted N2O and CO2 gaseous systems. Boltzmann type plots of the spectral intensity data of both N2O and CO2 show non-linear behaviour. We have
BALDACCHINI G, CHAKRABORTI PK, D'AMATO F
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Imaging, Therapeutics, and Advanced Technology in Head and Neck Surgery and Otolaryngology 2020, 2020
The CO2 laser has proved its worth in daily clinical use for soft tissue surgery because of the good cutting quality. Now DPSS Er:YAG laser systems are available, which promise a better cutting efficiency and minor thermal damages. Goal of this study was the comparison of both laser systems for soft tissue cutting.
Karl Stock +3 more
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The CO2 laser has proved its worth in daily clinical use for soft tissue surgery because of the good cutting quality. Now DPSS Er:YAG laser systems are available, which promise a better cutting efficiency and minor thermal damages. Goal of this study was the comparison of both laser systems for soft tissue cutting.
Karl Stock +3 more
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Comparison of CO2 and high power diode laser (HPDL) cladding
ICALEO 2002: 21st International Congress on Laser Materials Processing and Laser Microfabrication, 2002Cobalt based Stellite 21 hardfacing layers produced by coaxial CO2 and off-axis HPDL cladding were compared. Properties studied include the temperature of the workpiece, thickness of the heat affected zone (HAZ), dilution, microstructure, hardness and powder catchment efficiency. Both CO2 and HPDL cladding were found to give pore and crack-free coating
J. Tuominen +6 more
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