Optics and Spectroscopy

, Volume 99, Issue 6, pp 1000–1005

Study of boron and molybdenum plasmas on multipulse interaction of femtosecond radiation with a target

  • R. A. Ganeev
  • M. Suzuki
  • M. Baba
  • H. Kuroda
Lasers and their Applications

DOI: 10.1134/1.2149426

Cite this article as:
Ganeev, R.A., Suzuki, M., Baba, M. et al. Opt. Spectrosc. (2005) 99: 1000. doi:10.1134/1.2149426
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Abstract

Laser plasmas generated by femtosecond radiation on the surface of boron and molybdenum targets are investigated by the shadowgraph method. The modes of single-pulse and multipulse interaction of laser radiation with a target are compared. The occurrence of plasma bullets is discussed, which were observed on both single-pulse and multipulse interaction with the same area of a target. The wavefront velocities of expanding boron and molybdenum plasmas were measured to be 5 × 104 and 6 × 103 m s−1, respectively. The electron density measured by interferometry using a time delay of 800 ps in a boron plasma excited by 795-nm radiation with an intensity of 1016 W cm−2 amounted to 8 × 1019 cm−3. The correlation between some specific features of the plasma and the generation of the 3/2 harmonic, observed on multipulse interaction of femtosecond radiation with a boron target, is discussed.

Copyright information

© Pleiades Publishing, Inc. 2005

Authors and Affiliations

  • R. A. Ganeev
    • 1
    • 2
  • M. Suzuki
    • 1
  • M. Baba
    • 1
  • H. Kuroda
    • 1
  1. 1.Institute for Solid State PhysicsUniversity of TokyoKashiwa, ChibaJapan
  2. 2.NPO AkadempriborAkademgorodok, TashkentUzbekistan

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