in Refereed Journals
| M. Klaiber, E. Yakaboylu, H.
Bauke, K. Z. Hatsagortsyan, and C. H. Keitel Under-the-barrier dynamics in laser-induced relativistic tunneling [submitted] arXiv:1205.2004v1 [physics.atom-ph] |
|
| C. Buth, Feng He, J. Ullrich, C.
H. Keitel, and K. Z. Hatsagortsyan Attosecond pulses at kiloelectronvolt photon energies from high-order harmonic generation with core electrons [submitted] arXiv:1203.4127v1 [physics.atom-ph] |
|
| M. C. Kohler, and K. Z.
Hatsagortsyan Enhancing the high-order-harmonic generation yield within a specified spectral window via electron wave-packet engineering [submitted] |
|
| M. C. Kohler, T. Pfeifer,
K. Z. Hatsagortsyan, and C. H. Keitel Frontiers of atomic high-harmonic generation (review) [submitted] arXiv:1201.5094v1 [physics.atom-ph] |
|
| A. Di Piazza, C.
Müller, K. Z.
Hatsagortsyan, and C.H. Keitel Extremely high-intensity laser interactions with fundamental quantum systems (review) [submitted] arXiv:1111.3886v1 [hep-ph] |
|
| Ni Cui, M. Macovei, K. Z.
Hatsagortsyan and C. H. Keitel, Enhancing the lifetime of positronium atoms via collective radiative effects [submitted] arXiv:1112.1621v1 [quant-ph] |
|
| 57. |
C. Liu and K. Z. Hatsagortsyan Coulomb focusing at above-threshold ionization in elliptically polarized mid-infrared strong laser fields Phys. Rev. A 85, 023413 (2012) arXiv:1109.5645v2 [physics.atom-ph] |
| 56. |
M. C. Kohler, K. Z. Hatsagortsyan Macroscopic aspects of the relativistic x-ray assisted high-order-harmonic generation Phys. Rev. A 85, 023819 (2012) arXiv:1111.4113v1 [physics.atom-ph] |
| 55. |
Ji-Cai Liu, M. C. Kohler, K. Z.
Hatsagortsyan and C. H. Keitel Coherent x-ray generation from below-threshold harmonics Phys. Rev. A 84, 063817 (2011) |
| 54. |
J. P. Corson, J. Peatross,
C.
Müller, and K. Z. Hatsagortsyan Scattering of intense laser radiation by a single-electron wave packet Phys. Rev. A 84, 053831 (2011) |
| 53. |
A. Ipp, J. Evers, C. H. Keitel, and K. Z. Hatsagortsyan |
| 52. |
G. Yu. Kryuchkyan and K.
Z. Hatsagortsyan Bragg scattering of light in vacuum structured by strong periodic fields Phys. Rev. Lett. 107, 053604 (2011) arXiv:1102.4013v1 [quant-ph] |
| 51. |
H. Ebadi, C. H. Keitel,
and K.
Z. Hatsagortsyan Time analysis of above-threshold ionization in extreme-ultraviolet laser pulses Phys. Rev. A 83, 063418 (2011) |
| 50. |
C. Liu and K. Z. Hatsagortsyan, Wavelength and intensity dependence of multiple forward scattering at above-threshold ionization in mid-infrared strong laser fields J. Phys. B 44, 095402 (2011) arXiv:1011.1810v1 [physics.atom-ph] |
| 49. |
M. C. Kohler, M. Klaiber, K. Z.
Hatsagortsyan, and C. H. Keitel, Phase-matched coherent hard x-rays from relativistic high-order harmonic generation EPL 94, 14002 (2011) arXiv:1008.0511v1 [physics.atom-ph] |
| 48. |
M. C. Kohler, C. H. Keitel, and
K.
Z. Hatsagortsyan Attochirp-free High-order Harmonic Generation Optics Express, 19, 4411 (2011) arXiv:1101.5885v1 [physics.atom-ph]
|
| 47. |
A. Di Piazza, K. Z.
Hatsagortsyan, and C.H. Keitel, Quantum radiation reaction effects in multiphoton Compton scattering Phys. Rev. Lett. 105, 220403 (2010) arXiv:1007.4914v1 [hep-ph] |
| 46. |
Chengpu Liu and K. Z.
Hatsagortsyan, Origin of Unexpected Low Energy Structure in Photoelectron Spectra Induced by Mid-Infrared Strong Laser Fields Phys. Rev. Lett. 105, 113003 (2010) arXiv:1007.5173v1 [physics.atom-ph] |
| 45. |
C. Liu, M. C. Kohler, K. Z.
Hatsagortsyan, C. Müller and C.
H. Keitel, Laser-guided relativistic quantum dynamics [Focus on Quantum Control] New J. Phys. 11, 105045 (2009) included in IOP Select |
| 44. | A. Di Piazza, K. Z. Hatsagortsyan and C. H. Keitel, Strong signatures of radiation reaction below the radiation-dominated regime Phys. Rev. Lett. 102, 254802 (2009) arXiv:0810.1703 [physics.class-ph] |
| 43. | M. Ruf, G. R. Mocken, C. Müller, K. Z. Hatsagortsyan and C.
H. Keitel, Pair production in laser fields oscillating in space and time Phys. Rev. Lett. 102, 080402 (2009) arXiv:0810.4047 [physics.atom-ph] |
| 42. | A. Di Piazza, K. Z. Hatsagortsyan and C. H. Keitel, Laser-photon merging in proton-laser collisions Phys. Rev. A 78, 062109 (2008) |
| 41. | C. Müller, K. Z. Hatsagortsyan and C. H. Keitel, "Muon pair creation from positronium in a linearly polarized laser field" Phys. Rev. A 78, 033408 (2008) |
| 40. | K. Z. Hatsagortsyan, M. Klaiber, C. Müller, M. C. Kohler and
C. H. Keitel, Laser-driven relativistic recollisions JOSA B 25, 92 (2008) |
| 39. | J. Peatross, C. Müller, K. Z. Hatsagortsyan and C. H. Keitel,
Photoemission of a Single-Electron Wave Packet in a Strong Laser Field Phys. Rev. Lett. 100, 153601 (2008) arXiv:0712.0259 [quant-ph] |
| 38. | M. Klaiber, K. Z. Hatsagortsyan, C. Müller and C. H. Keitel, Coherent hard x rays from attosecond pulse train-assisted harmonic generation Optics Letters 33, 411 (2008) arXiv:0708.3360v1 [physics.atom-ph] |
| 37. | A. Di Piazza, K. Z. Hatsagortsyan and C. H. Keitel, Nonperturbative Vacuum-Polarization Effects in Proton-Laser Collisions Phys. Rev. Lett. 100, 010403 (2008) arXiv:0708.0475 [hep-ph] |
| 36. | C. Müller, K. Z. Hatsagortsyan and C. H. Keitel, Particle physics with a laser-driven positronium atom Physics Letters B 659, 209 (2008) arXiv:0705.0917 [hep-ph] |
| 35. | M. Klaiber, K. Z. Hatsagortsyan and C. H. Keitel, Fully relativistic laser-induced ionization and recollision processes Phys. Rev. A 75, 063413 (2007) |
| 34. | A. Di Piazza, K. Z. Hatsagortsyan and C. H. Keitel, Enhancement of vacuum polarization effects in a plasma Phys. Plasmas 14, 032102 (2007) arXiv:hep-ph/0606059 |
| 33. | M. Klaiber, K. Z. Hatsagortsyan and C. H. Keitel, "Relativistic ionization rescattering with tailored laser pulses Phys. Rev. A 74, 051803(R) (2006) arXiv:physics/0608015 |
| 32. | C. Müller, K. Z. Hatsagortsyan and C. H. Keitel, Muon pair creation from positronium in a circularly polarized laser field Phys. Rev. D 74, 074017 (2006) arXiv:physics/0602106 |
| 31. | K. Z. Hatsagortsyan, C. Müller and C. H. Keitel, Microscopic laser-driven high-energy colliders Europhys. Lett. 76, 29 (2006) arXiv:physics/0602093 EPL Editorial Board highlights of 2006 |
| 30. | A. Di Piazza, K. Z. Hatsagortsyan and C. H. Keitel, "Light Diffraction by a Strong Standing Electromagnetic Wave Phys. Rev. Lett. 97, 083603 (2006) arXiv:hep-ph/0602039 |
| 29. | A. I. Milstein, C. Müller, K. Z. Hatsagortsyan, U. D.
Jentschura and C. H. Keitel, Polarization-operator approach to electron-positron pair production in combined laser and Coulomb fields Phys. Rev. A 73, 062106 (2006) arXiv:physics/0603069 |
| 28. | Michael Klaiber, Karen Z. Hatsagortsyan and Christoph H.
Keitel, Gauge-invariant relativistic strong field approximation Phys. Rev. A 73, 053411 (2006) |
| 27. | Y. I. Salamin, S. X. Hu, K. Z. Hatsagortsyan and C. H.
Keitel, Relativistic high-power laser-matter interactions (review) Phys. Reports 427, No.2-3, p. 41-155 (2006) |
| 26. | A. Di Piazza, K. Z. Hatsagortsyan and C. H. Keitel, Harmonic generation from laser-driven vacuum Phys. Rev. D 72, 085005 (2005) |
| 25. | K. Z. Hatsagortsyan and C. H. Keitel, Thin crystal layers in superstrong laser fields: Dynamics and coherent x-ray generation Phys. Rev. A 72, 023812 (2005) |
| 24. | M. Klaiber, K. Z. Hatsagortsyan, and C. H. Keitel, Above-threshold ionization beyond the dipole approximation Phys. Rev. A 71, 033408 (2005) |
| 23. | B. Henrich, K. Z. Hatsagortsyan and C. H. Keitel, Positronium in intense laser fields Phys. Rev. Lett. 93, 013601 (2004) arXiv:hep-th/0303188 |
| 22. | K. Z. Hatsagortsyan and C.H. Keitel, Phase matched high harmonic generation from laser-driven crystals J. Phys. B Lett. 35, L175 (2002) |
| 21. | M. W. Walser, D. J. Urbach, K. Hatsagortsyan, S. X. Hu and
C.H. Keitel, Spin and radiation in intense laser fields Phys. Rev. A 65, 043410 (2002) |
| 20. | A. K. Avetissian, K. Z. Hatsagortsian, G. F. Mkrtchian and
Kh. V. Sedrakian, Nonlinear Compton scattering of strong laser radiation on channeled particles in a crystal Phys. Lett. A 299, 331, (2002) |
| 19. | K. Z. Hatsagortsyan and C.H. Keitel, X-ray amplification by laser controlled coherent bremsstrahlung Phys. Rev. Lett. 86, 2277 (2001) |
| 18. | H. K. Avetissian, K. Z. Hatsagortsian, A. G. Markossian and
S. V. Movsissian, Generalized eikonal wave function of a Dirac particle interacting with an arbitrary potential and radiation fields Phys. Rev. A 59, 549 (1999) |
| 17. | H.K. Avetissian, , A.Kh. Bagdasarian, , K.Z. Hatsagortsian
and , G.F. Mkrtchian, Quantum theory of the nonlinear stimulated Cherenkov process Phys.Lett. A 246, 16 (1998) |
| 16. | H. K. Avetissian, A. Kh. Bagdasarian, K. Z. Hatsagortsian and
G. F. Mkrtchian, Quantum theory of induced Cherenkov process at exact resonance Phys.Lett. A 244, 25 (1998) |
| 15. | K. Z. Hatsagortsian and , A. L. Khachatryan, The effect of the energy and angular spread of electron beam on the stimulated coherent bremsstrahlung gain in a crystal Opt. Comm. 146, 114 (1998) |
| 14. | H. K. Avetissian, K. Z. Hatsagortsian, G. F. Mkrtchian and
Kh. V. Sedrakian, Nonlinear amplification of X-ray channeling radiation" Phys. Rev. A 56, 4121 (1997) |
| 13. | H. K. Avetissian, K. Z. Hatsagortsian and G. F. Mkrtchian, Stimulated phenomena in the surface Cherenkov process by unmagnetized electron beam IEEE J.Quant.El. 33, 897 (1997) |
| 12. | K. Z. Hatsagortsian and T. R. Hovhannissian, Stimulated resonant bremsstrahlung in the high-frequency electromagnetic pump field Phys.Lett. A 221, 5 (1996) |
| 11. | H. K. Avetissian, A. K. Avetissian, K. Z. Hatsagortsian and
Kh. V. Sedrakian, Quantum modulation of beams of channeled electrons and positrons by a transverse electromagnetic wave Zh.TEF (Sov. JETP) 109, 1159 (1996) [Sov. Phys. JETP 82, 622 (1996)] |
| 10. | H. K. Avetissian, K. Z. Hatsagortsian, G. F. Mkrtchian and
Kh. V. Sedrakian, Multiphoton transitions for a channeled particle interacting with a strong electromagnetic wave Phys.Lett. A 206, 141 (1995) |
| 9. | K. Z. Hatsagortsian and G. A. Galechyan, Acoustic discontraction of gas discharge Laser Physics 4, 502 (1994) |
| 8. | H. K. Avetissian, A. K. Avetissian, K. Z. Hatsagortsian and
S. V. Movsissian, The exact theory of single photon stimulated bremsstrahlung in the Coulomb potential J. Phys. B 23, 4207 (1990) |
| 7. | A. R. Mkrtchyan, K. Z. Hatsagortsian, G. A. Galechyan and E.
G. Divanian, Influence of acoustic waves on plasma column properties Acustica 69, 124 (1989) |
| 6. | H. K. Avetissian, A. K. Avetissian and K. Z. Hatsagortsian, Superluminal Compton-laser Phys.Lett. A 137, 463 (1989) |
| 5. | H. K. Avetissian, A. K. Avetissian, K. Z. Hatsagortsian and
Kh. V. Sedrakian, Stimulated energy exchange of channeled particle with a transverse electromagnetic wave Dokl. AN Arm. SSR [Proc. Arm. Acad. Sci.] 85, 164 (1987) |
| 4. | H. K. Avetissian and K. Z. Hatsagortsian, The reduction of the energy or angular spread of charged particles beam by laser pulse Izv. AN Arm. SSR [J. Contemp. Phys.] 232, 94 (1987) |
| 3. | H.K. Avetissian, A.K. Avetissian, K.Z. Hatsagortsian and S.
V. Movsissian, Classical dynamics of stimulated bremsstrahlung in the Coulomb potential Phys.Lett. A 117, 111 (1986) |
| 2. | H. K. Avetissian and K. Z. Hatsagortsian, Amplification of electromagnetic wave by the cyclotron resonance process in medium Zh.Tekh.Fiz. 54, 2347 (1984) [Soviet Physics - Technical Physics 29, 1381 (1984)] |
| 1. | K. Z. Hatsagortsian, Modulation of electron beam by the stimulated bremsstrahlung process on atoms Zh.Tekh.Fiz. 54 , 1057 (1984) [Soviet Physics - Technical Physics 29, 601 (1984)] |