Applied Physics B

, Volume 58, Issue 2, pp 143–148

Experimental study of enhanced emission of the laser-ablated plume in backing gas

Authors

  • H. P. Gu
    • Shanghai Institute of Optics and Fine MechanicsAcademia Sinica
  • Q. H. Lou
    • Shanghai Institute of Optics and Fine MechanicsAcademia Sinica
  • N. H. Cheung
    • Department of PhysicsHong Kong Baptist College
  • S. C. Chen
    • Department of PhysicsHong Kong Baptist College
  • Z. Y. Wang
    • Department of PhysicsHong Kong Baptist College
  • P. K. Lin
    • Department of PhysicsHong Kong Baptist College
Article

DOI: 10.1007/BF01082349

Cite this article as:
Gu, H.P., Lou, Q.H., Cheung, N.H. et al. Appl. Phys. B (1994) 58: 143. doi:10.1007/BF01082349

Abstract

The effects of background gases on the optical emission of the excimer-laser-ablated plume from a brass target have been studied experimentally. It is found that the plume emission can be enhanced significantly in a proper gas ambient. In hydrogen, the highest peak intensity is detected, and in argon, there is a distinctive difference in the pressure-dependent emission between in He and in the other three gases, Ar, N2 and H2. Moreover, the monitored line peak intensity remains unchanged in Ar and N2 and increases in H2 within a distance above the target surface; but in He, the observed peak intensity decreases with distance like in vacuum. Furthermore, the emissions of several more atomic lines of Cu and Zn atoms from the plume are also found to be enhanced in the same manner in gas ambient. Some physical processes involved in the plume expansion and the possible mechanisms for the enhanced emission of the plume in backing gas are discussed.

PACS

36.40

Copyright information

© Springer-Verlag 1994