34 citations · 158 across the 29 of their papers we have counts for
30 papers
Coherent control of orthogonal continuum states in XUV photoionization
Neha Kukreti, Amol R. Holkundkar
We demonstrate coherent control of orthogonal continuum electron states in the XUV photoionization of atomic hydrogen using polarization-tailored driving fields. By combining polar…
Momentum-space signatures of radial orbital nodes in XUV photoionization
Neha Kukreti, Amol R. Holkundkar
Photoelectron momentum distributions (PMDs) are widely used to probe light matter interactions, yet their angular features are generally assumed to be governed primarily by angular…
Relativistic electron dynamics in ultra-intense lasers
Amol R Holkundkar
These lectures at Winter School on Intense Laser Science (WiSILS-2024) at IIT Jodhpur, India, will focus on the Relativistic charge particle dynamics in ultra-intense laser pulses.…
High-harmonic generation as a tunneling delay probe
Amol R. Holkundkar
We investigate the feasibility of using high-harmonic generation (HHG) as a complementary probe of tunneling delay in strong-field ionization. By combining time--frequency analysis…
Phase-Controlled Ramsey Interference of XUV Photoelectrons
Neha Kukreti, Amol R Holkundkar
We investigate Ramsey-type quantum interference in photoelectron momentum distributions generated by two time-delayed, linearly polarized extreme-ultraviolet (XUV) laser pulses. Th…
Harmonic emission as a probe to coherent transitions in the topological superconductors
Nivash R., S. Srinidhi, Jayendra N. Bandyopadhyay +1
We investigate the dynamical behavior of a topological superconducting system, demonstrating that its static configuration undergoes a transition driven by an intrinsic supercurren…
Engineering harmonic emission through spatial modulation in a Kitaev chain
Nivash R., S. Srinidhi, Jayendra N. Bandyopadhyay +1
We investigate High-harmonic generation (HHG) in a dimerized Kitaev chain. The dimerization in the model is introduced through a site-dependent modulating potential, determined by…
Probing topological phase transitions in Aubry-Andre-Harper model via high-harmonic generation
Nivash R, Jayendra N. Bandyopadhyay, Amol R. Holkundkar
We study the high-harmonic generation in the Aubry-Andre-Harper (AAH) model. The modulating phase of the AAH model is used as a control parameter while preserving the chiral symmet…
Role of inter- and intraband current in laser interaction with bi-chromatic quasi-periodic crystals
Amol R. Holkundkar, Nivash R, Jayendra N. Bandyopadhyay
We study the role of the inter- and intraband current in the laser interaction with the bi-chromatic quasi-periodic crystals. The interaction dynamics are simulated by solving the…
Temporal control of high-order harmonic cutoffs in periodic crystals
Nivash R., Amol R Holkundkar, Jayendra N. Bandyopadhyay
A theoretical study on the high-harmonic generation (HHG) in solids by a synthesized driver field is carried out. The vector potential of the driver field is instrumental in determ…
Tailoring polarisation of attosecond pulses via co-rotating bicircular laser fields
Rambabu Rajpoot, Amol R. Holkundkar, Navdeep Rana +1
The present work introduces a robust way to generate attosecond pulses with tunable ellipticity via high-order harmonic generation by co-rotating bicircular laser fields. T…
Bi-chromatic driver enabled control of high harmonic generation in atomic targets
Rambabu Rajpoot, Amol R. Holkundkar
We investigated the high-order harmonic generation by interacting time-delayed, linearly polarized bi-chromatic laser pulses with the atomic target. The frequency ratio of secondar…
High-order harmonic generation by sub-cycle laser pulses and associated scaling laws
Amol R. Holkundkar, Rambabu Rajpoot, Jayendra N. Bandyopadhyay
We studied the high-harmonic generation by the interaction of sub-cycle laser pulses with the He atom. The sub-cycle pulses are modeled using the complex source vector beam model,…
Polarization control of attosecond pulses using bi-chromatic elliptically polarized laser
Rambabu Rajpoot, Amol R. Holkundkar, Jayendra N. Bandyopadhyay
We study the higher-harmonic generation (HHG) using elliptically polarized two-color driving fields. The HHG via bi-chromatic counter-rotating laser fields is a promising source of…
Controlling resonant enhancement in higher-order harmonic generation
Rambabu Rajpoot, Amol R. Holkundkar, Jayendra N. Bandyopadhyay
We present a method to tune the resonantly enhanced harmonic emission from engineered potentials, which would be experimentally feasible in the purview of the recent advances in at…
Complete characterization of ultra-intense laser pulses in radiation damping regime
Amol R. Holkundkar, Felix Mackenroth
We report the first closed, analytical expression for the scattering angle of an electron bunch ponderomotively scattered from a counter-propagating, ultra-intense laser pulse, als…
Regulating the higher harmonic cutoffs via sinc pulse
Rambabu Rajpoot, Amol R. Holkundkar, Jayendra N. Bandyopadhyay
We theoretically investigate the generation of higher harmonics and the construction of a single attosecond pulse by means of two oppositely polarized sinc-shaped driver pulses. In…
Ultra-intense laser pulse characterization using ponderomotive electron scattering
Felix Mackenroth, Amol R. Holkundkar, Hans-Peter Schlenvoigt
We present a new analytical solution for the equation of motion of relativistic electrons in the focus of a high-intensity laser pulse. We approximate the electron's transverse dyn…
Dispersion of the laser pulse through propagation in underdense plasmas
Shivani Choudhary, Amol R. Holkundkar
The propagation of the laser pulses in the underdense plasma is a very crucial aspect of laser-plasma interaction process. In this work, we explored the two regimes of laser propag…
Chirp assisted ion acceleration via relativistic self induced transparency
Shivani Choudhary, Amol R. Holkundkar
We study the effect of the chirped laser pulse on the transmission and associated ion acceleration by the sub-wavelength target. In the chirped laser pulses, the pulse frequency ha…
Transition from wakefield generation to soliton formation
Amol R. Holkundkar, Gert Brodin
It is well known that when a short laser pulse propagates in an underdense plasma, it induces longitudinal plasma oscillations at the plasma frequency after the pulse, typically re…
Determining the duration of an intense laser pulse directly in focus
Felix Mackenroth, Amol R. Holkundkar
We propose a novel measurement technique capable of determining the temporal duration of an intense laser pulse directly in its focus at full intensity. We show that the electromag…
Focussing effects in laser-electron Thomson scattering
C. Harvey, M. Marklund, A. R. Holkundkar
We study the effects of laser pulse focussing on the spectral properties of Thomson scattered radiation. Modelling the laser as a paraxial beam we find that, in all but the most ex…
Effects of cluster size and spatial laser intensity distribution on fusion neutron generation by laser driven Deuterium clusters
Gaurav Mishra, Amol R. Holkundkar
A three dimensional molecular dynamic code is used to study the generation of fusion neutrons from Coulomb explosion of Deuterium clusters driven by intense near infra-red (NIR) la…