Abstract
We suggest a macroscopic scheme for generating circularly polarized high harmonics. The scheme uses a superposition of circularly polarized pump beams with different spatial modes, realizing a perturbed linearly polarized field which rotates along the propagation axis due to virtual circular birefringence. This method provides a spectral selectivity for the harmonic orders which are generated efficiently and for their spacing. The scheme is investigated numerically with a good agreement with the theory.
Original language | English |
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Article number | 221106 |
Journal | Applied Physics Letters |
Volume | 118 |
Issue number | 22 |
DOIs | |
State | Published - 31 May 2021 |
Externally published | Yes |