1. Cycloatoms and high order harmonics in moderate intense laser fields
Robert E. Wagner
Sophomore
Intense Laser Physics Theory Unit
Illinois State University
Support: NSF, Res. Corp., and ISU Honors Program

2. Relativity without super-strong lasers?
Magnetic field
Laser

3. W Maximum speed v/c for each W non- relativistic relativistic wL
R.E. Wagner, Q. Su and R. Grobe, Phys. Rev. Lett. 84, 3282 (2000).

4. Non-relativistic Relativistic Orbits stay in phase Orbits dephase
relativistically
Time
(in 2p/wL) 75
150
500 y x

5. Cycloatom dynamics
W=wL

7. Relativistic dephasing model
relativistic (exact)
dephasing model
Time 75
150
500
replace W  W + DW (V0)

8. Steady state spatial electron distributions
Multiple resonances
W ≈ wL
W ≈ 2 wL
Fractional resonances
W ≈ 1/2 wL
W ≈ 1/3 wL
W ≈ 3 wL
P.J. Peverly, R.E. Wagner, Q.Su and R. Grobe, Las. Phys. 10, 303 ( 2000).
Q. Su, R.E. Wagner, P.J. Peverly, and R. Grobe, Front. Las. Phys. p (Springer, 2000).

9. Cycloatom dynamics
W=1/2 wL

11. Scattered light spectra
non-relativistic
relativistic
R.E. Wagner, et al, PRA 60, 3233 (1999)

12. Quantum Mechanical Cycloatoms?
Liouville
P. Peverly, R. Wagner, Q. Su and R. Grobe, Las Phys. 10, 303 (2000)
Dirac
J. Braun, Q. Su and R. Grobe, PRA 59, 604 (1999)

13. Liouville Dirac Confirmed: Dirac Cycloatoms
P. Krekora, R. Wagner, Q. Su and R. Grobe, PRA, submitted

14. • Cycloatoms reveal new relativistic phenomena
Summary
• Cycloatoms reveal new relativistic phenomena
• Novel resonances => possible experiments
[1] R.E. Wagner, Q. Su and R. Grobe, Phys. Rev. Lett. 84, 3282 (2000).
[2] R.E. Wagner, Q. Su, and R. Grobe, Phys. Rev. A 60, 3233, 1999.
[3] R.E. Wagner, P.J. Peverly, Q. Su and R. Grobe, Phys. Rev. A 61, 35402(2000).
[4] P.J. Peverly, R.E. Wagner, Q.Su and R. Grobe, Las. Phys. 10, 303 ( 2000).
[5] P. Krekora, R.E. Wagner, Q. Su and R. Grobe, PRA, submitted.
[6] Q. Su, R.E. Wagner, P.J. Peverly, and R. Grobe, Front. Las. Phys. p (Springer, 2000).
Undergraduate Student travel grant (DAMOP)