Conference Presentations

1. ``Polarization Dependence of Inter-Core Coupling in Multi-Core Photonic Crystal Fibers''
   Y. Yan, J. Toulouse, I. Veltchev, s. Rotkin
   Frontiers In Optics, Rochester 2008 [talk].

2. ``Optimizing the Laser Parameters in a Simulated Laser-Proton Accelerator''
   I. Veltchev, E. Fourkal, and C.-M. Ma
   American Association of Physicists in Medicine (AAPM2008) [talk].

3. ``Improved Proton Yield From a Laser-Proton Accelerator''
   I. Veltchev, A. Guemnie Tafo, T. Lin, E. Fourkal, J. Fan, J. Li, C.-M. Ma,S. Orimo, and K. Ogura
   American Association of Physicists in Medicine (AAPM2008) [poster].

4. ``Laser-To-Proton Energy Transfer Efficiency in Laser-Plasma Interactions''
   E. Fourkal, I. Veltchev, and C.-M. Ma
   American Association of Physicists in Medicine (AAPM2008) [talk].

5. ``Cellular Radiosensitivity of Laser Accelerated Protons: A Feasibility Study''
   J. Fan, E. Fourkal, A. Guemnie Tafo, I. Veltchev, J. Li, Q. Xu, T. Lin, L. Wang, K. Paskalev, L. Jin, and C.-M. Ma
   American Association of Physicists in Medicine (AAPM2008) [poster].

6. ``Laser-Proton Inter-Track Effect and the DNA Double-Strand Break ''
   J. Fan, E. Fourkal, A. Guemnie Tafo, I. Veltchev, R. Price Jr., W. Luo, J. Li, A. Eldib, L. Chen, and C.-M. Ma
   American Association of Physicists in Medicine (AAPM2008) [poster].

7. ``A Laser-Ion Accelerator for Radiation Therapy Application''
   C.-M. Ma, E. Fourkal, I. Veltchev, J. Li, J. Fan, T. Lin, A. Guemnie Tafo
   American Association of Physicists in Medicine (AAPM2008) [poster].

8. ``Chain acceleration of protons using high-power laser pulses''
   I. Veltchev, E. Fourkal, and C.-M. Ma
   American Association of Physicists in Medicine (AAPM2007) [talk].

9. ``Beam of laser-accelerated protons: generation and characterization''
   I. Veltchev, T. Lin, E. Fourkal, J. Fan, J. Li, C.-M. Ma,S. Orimo, and K. Ogura
   American Association of Physicists in Medicine (AAPM2007) [talk].

10. ``A laser system and target design for proton acceleration''
    I. Veltchev, E. Fourkal, T. Lin, and C.-M. Ma
    American Association of Physicists in Medicine (AAPM2006) [talk, PDF ].

11. ``Prepulse effect and maximum energy of protons accelerated by high-power lasers''
    E. Fourkal, I. Veltchev, T. Lin, and C.-M. Ma
    American Association of Physicists in Medicine (AAPM2006) [talk].

12. ``Laser-accelerated proton therapy: Target chamber design and shielding requirements''
    C.-M. Ma, I. Veltchev, E. Fourkal, J. Li, J. Fan, T. Lin, W. Luo, and S. Stathakis
    American Association of Physicists in Medicine (AAPM2006) [talk].

13. ``Analytical calculation of spread-out-Bragg-peak distributions for laser-accelerated proton beams''
    E. Fourkal, I. Veltchev, J. Fan, J. Li, W. Luo, and C.-M. Ma
    American Association of Physicists in Medicine (AAPM2005) [poster].

14. ``A laser-proton accelerator for radiation oncology: System design''
    C.-M. Ma, E. Fourkal, I. Veltchev, W. Luo, and A. Pollack
    American Association of Physicists in Medicine (AAPM2004) [talk].

15. ``Heavy-ion dynamics in the acceleration of protons by the interaction of high-power lasers with double-layer targets''
    E. Fourkal, I. Velchev, and C.-M. Ma
    Quantum Electronics and Laser Science Conference (QELS) pp.1822-1824 (2005). [poster, PDF ].

16. ``Directional coupling and switching in multi-core microstructure fibers''
    I. Velchev and J. Toulouse
    Conference on Lasers and Electro-Optics (CLEO) pp.997-999 (2004) [talk, PDF1 , PDF2 ].

17. ``A novel narrow-band wavelength-tunable laser system delivering high-energy 300 ps pulses in the near-infrared''
    F. Brandi, I. Velchev, D. Neshev, W. Hogervorst, and W. Ubachs
    Symposium IEEE/LEOS Benelux Chapter, Amsterdam, The Netherlands (9 December 2002) [talk].

18. ``Modulation instability induced by cross-phase modulation in Raman fiber amplifiers''
    R. Pattnaik, I. Velchev, J. Toulouse
    Conference on Lasers and Electro-Optics (CLEO) pp.535-536 (2002) [poster, PDF ].

19. ``Narrow-band XUV laser source''
    F. Brandi, D. Neshev, I. Velchev, W. Hogervorst, and W. Ubachs
    IQEC/LAT, Moscow, Russia, (22-28 June 2002) [poster].

20. ``Dense grid of reference I$_2$-lines for optical frequency calibration in the range 571-655 nm''
    W. Ubachs, I. Velchev, S.-C. Xu, R. van Dierendonck, and W. Hogervorst
    International Quantum Electronics Conference (IQEC) p.92 (2000) [poster].

21. ``Precision VUV laser spectroscopy on Ar, Kr and Xe''
    I. Velchev, F. Brandi, W. Hogervorst, and W. Ubachs
    International Quantum Electronics Conference (IQEC) p.77 (2000) [talk].

22. ``Narrowband coherent Soft-X-ray laser source''
    I. Velchev, W. Hogervorst, and W. Ubachs
    ESF workshop on applications of high-order harmonics, Lund, Sweden, (March 17-18 2000) [poster].

23. ``SBS-compressed FT-limited laser pulses tunable in wavelength and duration (200-2000 ps)''
    D. Neshev, I. Velchev, S. Schiemann, W. Hogervorst, and W. Ubachs
    Conference on Lasers and Electro-Optics Europe (CLEO-Europe) p.54 (1998) [talk].

24. ``Detailed investigation of stimulated Brillouin scattering compression in liquids with one-cell compact generator-amplifier setup''
    D. Neshev, I. Velchev, W. Majewski, W. Hogervorst, and W. Ubachs
    Tenth International School on Quantum Electronics, Varna, Bulgaria, (21-25 Sept 1998) [poster].

25. ``Topological Charge Controlled Interaction within Ordered Structures of Optical Vortex Solitons''
    M. Assa, I. Velchev, S. Dinev, D. Neshev, and A. Dreischuh,
    Nineth International School of Quantum Electronics, Varna, Bulgaria (16-20 Sept 1996) [poster].

26. ``Two-Dimensional Dark Solitons: Formation and Interactions''
    A. Dreischuh, S. Baluschev, I. Velchev, D. Neshev, and S. Dinev,
    Eight International School of Quantum Electronics, Varna, Bulgaria (29 Sept - 4 Oct 1994) [poster].

27. ``Numerical Modeling of Generation and Interactions of Dark Optical Solitons''
    A. Dreischuh, I. Velchev, D. Neshev, and S. Dinev
    First Symposium on Nonlinear Phenomena and Solitons, Sofia, Bulgaria (21-22 June 1994) [talk].