Advertisement

Wave perspective on high harmonics amplification in a high-gain medium with level degeneracy

  • Chul Min Kim
  • Karol A. Janulewicz
  • Jongmin Lee
Part of the Springer Proceedings in Physics book series (SPPHY, volume 136)

Abstract

Amplification of a high-harmonic-signal in an amplifying medium of an Xray laser is analysed by applying Maxwell-Bloch equations. The model includes timedependent high swept-gain, randomized spontaneous emission component and laser level degeneracy. The output characteristics including energy extraction, pulse shape and polarization of the output radiation are obtained within the formulated model and discussed in detail.

Keywords

Spontaneous Emission Gain Medium Amplify Spontaneous Emission Gain Coefficient Level Degeneracy 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Ackermann W. et al., Nature. Photon. 1, 336 (2007)ADSCrossRefGoogle Scholar
  2. 2.
    Costello J., "From tiny seeds to coherent beams", Nature. Photon. 2, 67 (2008)ADSCrossRefGoogle Scholar
  3. 3.
    Wang Y. et al.,"Phase-coherent, injection-seeded, table-top soft-X-ray lasaers at 18.9 nm and 13.9 nm", Nature Photon., 2,94 (2008)Google Scholar
  4. 4.
    Larroche O., Ros D., Klisnick A., Sureau A., Möller C., and Guennou H., "Maxwell-Bloch modeling of x-ray-laser-signal buildup in single- and double-pass configurations", Phys. Rev. A 62, 043815 (2000).ADSCrossRefGoogle Scholar
  5. 5.
    Kim C. M., Janulewicz K. A., Kim H. T., and Lee J., "Amplification of a highorder harmonic pulse in an active medium of a plasma-based x-ray laser", Phys. Rev. A 80, 053811 (2009).ADSCrossRefGoogle Scholar
  6. 6.
    Born M. and Wolf E., Principles of Optics, Cambridge University Press, Cambridge, 2005, 7th ed.Google Scholar
  7. 7.
    Kim C. M., Lee J., and Janulewicz K. A., "Coherent Amplification of an Ultrashort Pulse in a High- and Swept-Gain Medium with Level Degeneracy", Phys. Rev. Lett. 104, 053901 (2010)ADSCrossRefGoogle Scholar
  8. 8.
    G.J. Pert, "Optimizing the performance of nickel-like collisionally pumped x-ray lasers ", Phys. Rev. A 73, 033809 (2006)ADSCrossRefGoogle Scholar
  9. 9.
    Larotonda M.A. et al., "Pulse duration measurements of grazing-incidence-pumped hifgh repetition rate Ni-like Ag and Cd transient soft x-ray lasers", Opt. Lett. 31, 3043 (2006)ADSCrossRefGoogle Scholar
  10. 10.
    Casperson L. W., Yariv A., „Pulse Propagation in a High-Gain Medium", Phys. Rev. Lett. 26, 293 (1971)ADSCrossRefGoogle Scholar
  11. 11.
    Shoemaker R. L.: Coherent Transient Infrared Spectroscopy, p.251 in: Laser and Coherence Spectroscopy, Steinfeld J.l. ed., Plenum Press, New York, 1978Google Scholar

Copyright information

© Canopus Academic Publishing Limited 2011

Authors and Affiliations

  • Chul Min Kim
    • 1
  • Karol A. Janulewicz
    • 1
  • Jongmin Lee
    • 1
  1. 1.Advanced Photonics Research InstituteGwangju Institute of Science and TechnologyGwangjuSouth Korea

Personalised recommendations