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Influence of laser beam intensity profile on propagation dynamics of laser-blow-off plasma plume

  • Ajai Kumar (a1), Sony George (a2), R.K. Singh (a1) and V.P.N. Nampoori (a2)
Abstract
Abstract

Effect of intensity profile of the ablating laser on the dynamics of laser-blow-off (LBO) plume has been studied by fast imaging technique. This work emphasizes the geometrical aspect of the LBO plume, which is an important parameter for various applications. Visualization of the expanding plume reveals that geometrical shape and directionality (divergence) of the plume are highly dependent on the laser intensity profile. Present results demonstrate that the Gaussian profile laser produces a well-collimated, low divergence plasma plume as compared to the plume formed by a top-hat profile laser. The sequence of film removal processes is invoked to explain the role of energy density profile of the ablating laser in LBO mechanism.

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Corresponding author
Address correspondence and reprint requests to: Ajai Kumar, Institute for Plasma Research, Bhat, Gandhinagar-382 428, India. E-mail: ajai@ipr.res.in, ajaiipr@yahoo.com
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F.J. Adrian , J. Bohandy , B.F. Kim , A.N. Jette & P. Thomson (1987). A study of the mechanism of metal deposition by the laser-induced forward transfer process. J. Vac. Sci. Technol. B 5, 14901494.

S. Amoruso , R. Bruzzese , N. Spinelli , R. Velotta , M. Vitiello & X. Wang (2003). Dynamics of laser-ablated MgB2 plasma expanding in argon probed by optical emission spectroscopy. Phys. Rev. B 67, 224503–1/224503–11.

S. Amoruso , A. Sambri & X. Wang (2006). Propagation dynamics of a LaMnO3 laser ablation plume in an oxygen atmosphere. J. Appl. Phys. 100, 013302–1/013302–11.

S.I. Anisimov & B.S. Luk'yanchuk (2002). Selected problems of laser ablation theory. Phys. Uspekhi 45, 293324.

R.J. Baseman & N.M. Froberg (1989). Time-resolved transmission of thin gold films during laser blow-off. Appl. Phys. Lett. 55, 18411843.

D.J. Broer & L. Vriens (1983). Laser-induced optical recording in thin films. Appl. Phys. A 32, 107123.

N.M. Bulgakova , A.V. Bulgakov & O.F. Bobrenok (2000). Double layer effects in laser-ablation plasma plumes. Phy. Rev. E 62, 56245635.

D.B. Geohegan , A.A. Puretzky , G. Duscher & S.J. Pennycook (1998). Photoluminescence from gas-suspended SiOx nanoparticles synthesized by laser ablation. Appl. Phys. Lett. 73, 438440.

Sony. George , Ajai. Kumar , R.K. Singh & V.P.N. Nampoori (2009). Fast imaging of laser-blow-off plume: Lateral confinement in ambient environment. Appl. Phys. Lett 94, 141501–1/141501–3.

S.S. Harilal (2007). Influence of spot size on propagation dynamics of laser-produced tin plasma. J. Appl. Phys. 102, 123306–1/123306–6.

A. Huber , U. Samm , B. Schweer & Ph. Mertens (2005). Result from a double Li-beam technique for measurement of both radial and poloidal components of electron density fluctuations using two thermal beams. Plasma Phys. Contr. Fusion 47, 409440.

M.H. Key , W.T. Toner , T.J. Goldsack , J.D. Kilkenny , S.A. Veats , P.F. Cunningham & C.L.S. Lewis (1983). A study of ablation by laser irradiation of plane targets at wavelengths 1.05, 0.53, and 0.35 µm. Phys. Fluids 26, 20112026.

M. Masnavi , M. Nakajima , A. Sasaki , E. Hotta & K. Horioka (2006). Potential of discharge-based lithium plasma as an extreme ultraviolet source. Appl. Phys. Lett. 89, 031503–1/031503–3.

V. Schultze & M. Wagner (1991). Blow-off of aluminum films. Appl. Phys. A 53, 241248.

R.K. Singh & J. Narayan (1990). Pulsed-laser evaporation technique for deposition of thin films: Physics and theoretical model. Phys. Rev. B 41, 88438859.

R.K. Singh , Ajai. Kumar , B.G. Patel & K.P. Subramanian (2007). Role of ambient gas and laser fluence in governing the dynamics of the plasma plumes produced by laser blow off of LiF–C thin film. J. Appl. Phys. 101, 103301–1/103301–9.

Y-L. Wang , W. Xu , Y. Zhou , L-Z. Chu & G-S. Fu (2007). Influence of pulse repetition rate on the average size of silicon nanoparticles deposited by laser ablation. Laser Part. Beams 25, 913.

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Laser and Particle Beams
  • ISSN: 0263-0346
  • EISSN: 1469-803X
  • URL: /core/journals/laser-and-particle-beams
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