CONFERENCE PROCEEDINGS
Advanced Search
Home > Proceedings > Volume 1033 > Article
Paper
18 May 1989 Two-Color Infrared-Ultraviolet Laser Photo Excitation In Gas Phase Systems
J. Deson, C. Lalo, J. Masanet, J.Tardieu de Maleissye
Author Affiliations +
Proceedings Volume 1033, Trends in Quantum Electronics; (1989) https://doi.org/10.1117/12.950650
Event: International Conference on Trends in Quantum Electronics, 1988, Bucharest, Romania
Abstract
Some gas phase irradiations under continuous wave infrared conditions [CW laser] and pulsed ultraviolet conditions [ArF excimer laser.] are presented. The amount of energy absorbed by CO2-the gas phase system irradiated by a CW CO2) laser of several hundreds watts of output power, depends essentially on the thermodiffusivity of the absorbet. Therefore this parameter affects dramatically the overall decomposition kinetic of any species irradiated by a powerful infrared laser. With binary gas mixtures of absorber coupled with reactant, in the conditions of a photo sensitized decomposition, the distribution of the energy which is captured, between the two partners, leads to a maximum reaction rate at a given pressure of reactant. When the ultraviolet laser irradiation of various species at 193.3 nm is assisted by a CW infrared irradiation,different effects are observed, depending on the nature of species. The dual irradiation of NO in presence of SF 6, enhances strongly some fluorescence emissions which can be six fold more intense than in presence of a sing16 ultraviolet laser irradiation. This effect gives an estimation of both the heat bath temperature and the average number of infrared photons absorbed by NO via SF6. With CF0C1,, the infrared assistance leads to a new ultraviolet fluorescence emission, equivalent to aA average tbsbrption of five infrared photons and one ultraviolet photon. This new emisssion which corresponds to the fluorescence of the state C12 (1 lai+-4*XlEg+), should be the indication of a strong enhancement of one path among the two decomposition channels, driving to the CF2 radicals formation.
© (1989) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation Download Citation
J. Deson, C. Lalo, J. Masanet, and J.Tardieu de Maleissye "Two-Color Infrared-Ultraviolet Laser Photo Excitation In Gas Phase Systems", Proc. SPIE 1033, Trends in Quantum Electronics, (18 May 1989); https://doi.org/10.1117/12.950650
ACCESS THE FULL ARTICLE
ORGANIZATIONAL
Sign in with credentials provided by your organization.
INSTITUTIONAL
Select your institution to access the SPIE Digital Library.
SELECT YOUR INSTITUTION
PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.
PERSONAL SIGN IN
No SPIE Account? Create one
PURCHASE THIS CONTENT
SUBSCRIBE TO DIGITAL LIBRARY
50 downloads per 1-year subscription
Members: $195
Non-members: $335 ADD TO CART
25 downloads per 1 - year subscription
Members: $145
Non-members: $250 ADD TO CART
PURCHASE SINGLE ARTICLE
Includes PDF, HTML & Video, when available
Members: $17.00
Non-members: $21.00 ADD TO CART
PROCEEDINGS
 7 PAGES
DOWNLOAD PAPER SAVE TO MY LIBRARY
GET CITATION
Advertisement
Advertisement
RIGHTS & PERMISSIONS
Get copyright permission  Get copyright permission on Copyright Marketplace
KEYWORDS
Ultraviolet radiation
Luminescence
Laser irradiation
Infrared radiation
Continuous wave operation
Photons
Molecules
RELATED CONTENT
Subscribe to Digital Library
Receive Erratum Email Alert
Back to Top