PIC simulations show that a 20 micron gas cell ionized by two-color circularly polarized pulses produces a nearly homogeneous dipole plasma oscillation, emitting THz radiation with 2.7 to 4.7 times higher energy per electron than a 50 micron cell.
2013 Phys
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Bright single-cycle terahertz source based on gas cells irradiated by two-color laser pulses
PIC simulations show that a 20 micron gas cell ionized by two-color circularly polarized pulses produces a nearly homogeneous dipole plasma oscillation, emitting THz radiation with 2.7 to 4.7 times higher energy per electron than a 50 micron cell.