Above-threshold ionization of argon with ultrashort orbital-angular-momentum beams

Sen, Arnab and Sinha, Abhisek and Sen, Sanket and Sharma, Vandana and et al, . (2022) Above-threshold ionization of argon with ultrashort orbital-angular-momentum beams. Physical Review A, 106 (2). pp. 1-9. ISSN 2469-9926

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Abstract

Light-matter interaction with laser pulses endowed with orbital angular momentum (OAM) raises a fundamental question about the nature of the transfer of this property of light to matter. In this work, a "reaction microscope" is used for precise measurement of the momentum of ionized photoions and photoelectrons from the interaction of Ar atoms with a linearly polarized, ultrashort (similar to 25 fs), moderately intense (10(13)-10(14) W/cm(2)) OAM carrying laser pulses. The angle and energy-resolved photoelectron spectrum is compared with the photoelectron spectrum obtained from the interaction with the laser beams with no OAM at similar intensities. No evidence of angular momentum transfer to the electrons from light is observed in our experiment.

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IITH Creators:

IITH Creators	ORCiD
Sharma, Vandana	https://orcid.org/0000-0001-9830-2485

Item Type:

Article

Additional Information:

V.S. and R.G. thank Prof. M. Krishnamurthy for use of the laser facilities of the Tata Institute of Fundamental Research, Hyderabad, and for insightful suggestions. The funding from DST-SERB, DAE-BRNS, IMPRINT, UKIERI, and SPARC is gratefully acknowledged.

Uncontrolled Keywords:

CIRCULAR-DICHROISM,PHOTOIONIZATION,SINGLE FIELD,ATOMS,LIGHT

Subjects:

Physics

Divisions:

Department of Physics

Depositing User:

. LibTrainee 2021

Date Deposited:

22 Aug 2022 11:17

Last Modified:

30 Aug 2022 09:15