Spin polarized electron-positron pair production via elliptical polarized laser fields
Abstract
We study nonperturbative multiphoton electron-positron pair creation in ultrastrong electromagnetic fields formed by two counterpropagating pulses with elliptic polarization. Our numerical approach allows us to take into account the temporal as well as the spatial variation of the standing electromagnetic field. The spin and momentum resolved pair creation probabilities feature characteristic Rabi oscillations and resonance spectra. Therefore, each laser frequency features a specific momentum distribution of the created particles. We find that, depending on the relative polarization of both pulses, the created electrons may be spin polarized along the direction of field propagation.
- Publication:
-
Physical Review D
- Pub Date:
- June 2015
- DOI:
- 10.1103/PhysRevD.91.125026
- arXiv:
- arXiv:1502.06414
- Bibcode:
- 2015PhRvD..91l5026W
- Keywords:
-
- 12.20.Ds;
- 42.50.Hz;
- 42.55.Vc;
- Specific calculations;
- Strong-field excitation of optical transitions in quantum systems;
- multiphoton processes;
- dynamic Stark shift;
- X- and gamma-ray lasers;
- Physics - Atomic Physics;
- Quantum Physics
- E-Print:
- Physical Review D 91, 125026 (2015)