Hemkumar Srinivas
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View article: Multi-sideband interference structures by high-order photon-induced continuum-continuum transitions in helium
Multi-sideband interference structures by high-order photon-induced continuum-continuum transitions in helium Open
Following up on a previous paper on two-color photoionization of Ar(3p) [D. Bharti , ], we present measurements and calculations for a modified three-sideband (3-SB) version of the reconstruction of attosecond beating by interference of tw…
View article: Multi-sideband interference structures by high-order photon-induced continuum-continuum transitions in helium
Multi-sideband interference structures by high-order photon-induced continuum-continuum transitions in helium Open
Following up on a previous paper on two-color photoionization of Ar(3p) [Bharti et al., Phys. Rev. A 103 (2021) 022834], we present measurements and calculations for a modified three-sideband (3-SB) version of the "reconstruction of attose…
View article: Multisideband interference structures observed via high-order photon-induced continuum-continuum transitions in argon
Multisideband interference structures observed via high-order photon-induced continuum-continuum transitions in argon Open
We report a joint experimental and theoretical study of a three-sideband (3-SB) modification of the reconstruction of attosecond beating by interference of two-photon transitions (RABBIT) setup. The 3-SB RABBIT scheme makes it possible to …
View article: High-repetition rate attosecond beamline for multi-particle coincidence experiments
High-repetition rate attosecond beamline for multi-particle coincidence experiments Open
In this paper, a 3-dimensional photoelectron/ion momentum spectrometer (reaction microscope) combined with a table-top attosecond beamline based on a high-repetition rate (49 kHz) laser source is presented. The beamline is designed to achi…
View article: Sub-femtosecond optical control of entangled states
Sub-femtosecond optical control of entangled states Open
For photo-dissociation of a single hydrogen molecule (H2) with combined XUV and IR laser pulses, we demonstrate optical control of the emission direction of the photoelectron with respect to the outgoing neutral fragment (the H-atom). Depe…
View article: Coincident angle-resolved state-selective photoelectron spectroscopy of acetylene molecules: a candidate system for time-resolved dynamics
Coincident angle-resolved state-selective photoelectron spectroscopy of acetylene molecules: a candidate system for time-resolved dynamics Open
We focus on detailed investigations of the molecular acetylene-vinylidene system in the photon energy range 19–40 eV where extreme-ultraviolet pulses can probe the dynamics effectively.
View article: Penning spectroscopy and structure of acetylene oligomers in He nanodroplets
Penning spectroscopy and structure of acetylene oligomers in He nanodroplets Open
Penning spectroscopy of acetylene molecules dissolved in superfluid He nanodroplets reveals the loosely held molecular aggregate collapsing into a covalently bound oligomer ion upon indirect ionization effected by the photoexcited He* in t…
View article: Angle-resolved time delays in photoionization with a high repetition rate laser source
Angle-resolved time delays in photoionization with a high repetition rate laser source Open
Synopsis Complete measurements of photoionization include both time-resolved and angle-resolved mapping of the atomic and molecular dynamics. The setup described in this work is suited to be used for attosecond pump-probe experiments as we…