Dynamics and spectroscopy of the laser plume and generation of nanoparticles

V. V. Osipov; V. I. Solomonov; V. V. Platonov; O. A. Snigireva; V. V. Lisenkov; M. G. Ivanov

doi:10.1117/12.729589

25 April 2007 Dynamics and spectroscopy of the laser plume and generation of nanoparticles

V. V. Osipov, V. I. Solomonov, V. V. Platonov, O. A. Snigireva, V. V. Lisenkov, M. G. Ivanov

Proceedings Volume 6606, Advanced Laser Technologies 2006; 66060M (2007) https://doi.org/10.1117/12.729589
Event: Advanced Laser Technologies 2006, 2006, Brasov, Romania

Abstract

The dynamics and the spectral kinetic characteristics of the plume emerging in the vicinity of graphite targets, pressed pellets consisting of zirconium oxide powder stabilized with yttrium (YSZ) and of garnet stock with neodymium (YAG:Nd) are studied. The targets are irradiated in air at room temperature using a repetitively pulsed CO₂ laser with a wavelength of 10.6mm, a peak power of up to 9 kW, a pulse energy of up to 1.69 J, and a pulse duration of 330ms at a level of 0.1. The plume propagates normally to the target surface at an angle of 45° relative to the laser radiation. The spectral kinetic characteristics of the plume luminescence are discretely measured along the entire length. It is demonstrated that the plumes of all targets represent the "ows of a weakly nonequilibrium gas plasma with a temperature of 10 kK (graphite) and 3.1...4.7 kK (YSZ and YAG:Nd pressed pellets). The plume size is determined by the peak power of the laser pulse. The luminescence of the two-atom radicals (C₂ in graphite; ZrO and YO in YSZ; and YO, AlO, and NdO in YAO:Nd) dominates in all of the plumes. A relatively high temperature of the graphite plume is maintained owing to the energy of the exothermic reaction involving the association of carbon atoms and the energy of the vibrationally excited molecules resulting from this reaction. The dynamics of plasma plume was studied by luminescence imaging and shadowgraphy.

Citation Download Citation

V. V. Osipov, V. I. Solomonov, V. V. Platonov, O. A. Snigireva, V. V. Lisenkov, and M. G. Ivanov "Dynamics and spectroscopy of the laser plume and generation of nanoparticles", Proc. SPIE 6606, Advanced Laser Technologies 2006, 66060M (25 April 2007); https://doi.org/10.1117/12.729589

ACCESS THE FULL ARTICLE

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