TY - GEN
T1 - Controlling polarization of attosecond pulses with plasmonic-enhanced bichromatic counter-rotating circularly polarized fields
AU - Ansari, Irfana N.
AU - Hofmann, Cornelia
AU - Medisauskas, Lukas
AU - Lewenstein, MacIej
AU - Ciappina, Marcelo F.
AU - DIxit, Gopal
N1 - Publisher Copyright:
© 2021 IEEE.
PY - 2021/6
Y1 - 2021/6
N2 - For a variety of spectroscopic methods, control over the polarization of attosecond pulses is necessary to probe chiral-sensitive light-matter interactions [1] at ultrafast time scales. This is a challenge that goes beyond generating individual harmonics of particular polarization [2] , since filtering individual harmonics will lose the sub-femtosecond temporal resolution. In our work, we combine a bichromatic counter-rotating circularly polarized (BiCRCP) driving field with a spatial inhomogeneity. We show that the direction and strength of the plasmonic-enhanced field provides a knob to shape the polarization of attosecond pulses from a High Harmonic Generation (HHG) process [3]. Plasmonic-field-assisted HHG with linear polarisation yields a significant energy enhancement [4] , but relies on the photoelectron trajectory to be (dominantly) parallel to the polarization and inhomogeneity. HHG with BiCRCP driving fields can generate a spectrum consisting of doublets of harmonic orders with alternating helicity [2] , but this requires a three-fold-symmetry which is broken by the plasmonic-enhanced field.
AB - For a variety of spectroscopic methods, control over the polarization of attosecond pulses is necessary to probe chiral-sensitive light-matter interactions [1] at ultrafast time scales. This is a challenge that goes beyond generating individual harmonics of particular polarization [2] , since filtering individual harmonics will lose the sub-femtosecond temporal resolution. In our work, we combine a bichromatic counter-rotating circularly polarized (BiCRCP) driving field with a spatial inhomogeneity. We show that the direction and strength of the plasmonic-enhanced field provides a knob to shape the polarization of attosecond pulses from a High Harmonic Generation (HHG) process [3]. Plasmonic-field-assisted HHG with linear polarisation yields a significant energy enhancement [4] , but relies on the photoelectron trajectory to be (dominantly) parallel to the polarization and inhomogeneity. HHG with BiCRCP driving fields can generate a spectrum consisting of doublets of harmonic orders with alternating helicity [2] , but this requires a three-fold-symmetry which is broken by the plasmonic-enhanced field.
UR - http://www.scopus.com/inward/record.url?scp=85117604126&partnerID=8YFLogxK
U2 - 10.1109/CLEO/Europe-EQEC52157.2021.9542653
DO - 10.1109/CLEO/Europe-EQEC52157.2021.9542653
M3 - 会议稿件
AN - SCOPUS:85117604126
T3 - 2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2021
BT - 2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2021
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2021
Y2 - 21 June 2021 through 25 June 2021
ER -