31 citations · 44 across the 14 of their papers we have counts for
15 papers
Quasi mono-energetic, relativistic electron acceleration in a femtosecond, high intensity laser excited solid magnet
Trishul Dhalia, Anandam Choudhary, C. Aparajit +6
The interaction of ultraintense lasers with magnetized overdense plasmas reveals a fundamentally new regime of laser-driven particle acceleration. Particle-in-cell simulations demo…
Impulsive excitation of a solid by extreme contrast, high intensity femtosecond laser pulses
Sagar Dam, Jian Fuh Ong, Sk Rakeeb +8
We present the ultra-fast dynamics of the interaction between a high-intensity extreme contrast (expected to be around 1e-18 at hundreds of picoseconds timescale) femtosecond laser…
Spatial, Spectral and Temporal Response of High Intensity Laser Plasma Mirrors- Direct Observation of the Ponderomotive Push
Sk Rakeeb, Animesh Sharma, Sagar Dam +5
Plasma-based optics have emerged as a powerful platform for manipulating and amplifying ultra-intense laser pulses. However, the inherently nonlinear and dynamic nature of plasma l…
10-fold amplification of a tiny magnetic field to megagauss scale in femtosecond, ultraintense laser-solid interaction
Anandam Choudhary, Trishul Dhalia, Sagar Dam +8
Generating a powerful and quasistatic magnetic field within the confines of a tabletop laboratory experiment has proven to be a persistent challenge. The creation of magnetized hig…
Capturing the three dimensional, nano-scale, pico-second dynamics of plasma mirrors with intense ultrashort laser wavefront measurement
Sk Rakeeb, Sagar Dam, Ameya Parab +3
We present a direct measurement of the nanoscale dynamics of plasma mirrors using wavefront measurement techniques. This two-dimensional measurement, performed via pump-probe diagn…
Generation of mega-gauss axial and azimuthal magnetic fields in a solid plasma by ultrahigh intensity, circularly polarised femtosecond laser pulses
Anandam Choudhary, Laxman Prasad Goswami, C. Aparajit +5
The interaction of intense linearly polarized femtosecond laser pulses with solids is known to generate azimuthal magnetic fields, while circularly polarized light has been shown t…
Femtosecond dynamics on the nanoscale of intense laser-induced grating plasma
Ankit Dulat, Sagar Dam, Sk Rakeeb +3
The complex interaction dynamics of intense femtosecond (fs) pulses and their picosecond (ps)-long leading edge with nanostructured solids occur at both the nanometer and the femto…
Intrinsic femtosecond structure of extreme contrast harmonic pulses: influence on relativistic laser-solid interactions
C. Aparajit, Anandam Choudhary, Ankit Dulat +7
Extreme intensity contrast is considered essential for ultraintense, femtosecond laser excitation of solid targets, in particular for studies with structured or ultra-thin targets.…
Coherent Control of Relativistic Electron Dynamics in Plasma Nanophotonics
Ankit Dulat, Sk Rakeeb, Sagar Dam +4
Intense femtosecond laser pulses interacting with solids can drive electrons to relativistic energies, enabling miniaturized particle accelerators and bright extreme-ultraviolet li…
Controlling intense, ultrashort, laser-driven relativistic mega-ampere electron fluxes by a modest, static magnetic field
Anandam Choudhary, Trishul Dhalia, C. Aparajit +6
The guiding and control of ultrahigh flux, femtosecond relativistic electron pulses through solid density matter is of great importance for many areas of high energy density scienc…
Single-Shot, Spatio-Temporal Metrology of Relativistic Plasma Optics
Ankit Dulat, Amit D. Lad, C. Aparajit +4
Ultrahigh peak power femtosecond laser pulses create extreme states of matter that are currently being probed with great interest. Plasma optics have been proposed for shaping and…
Collimated hot electron generation from sub-wavelength grating target irradiated by a femtosecond laser pulse of relativistic intensity
Kamalesh Jana, Amit D. Lad, Guo-Bo Zhang +6
We investigate the production of hot electrons from the interaction of relativistically intense () ultra-short (25 fs) laser pulses with sub-wavelength grating…
Subpicosecond dynamics of pre-plasma on a solid, formed by a ultra-high contrast, relativistic intensity pulse
Ankit Dulat, C. Aparajit, Anandam Choudhary +3
Using spectral interferometry technique, we measured subpicosecond time-resolved pre-plasma scale lengths and early expansion ( 12 ps) of the plasma produced by a high intensity…
Efficient second-harmonic generation of a high-energy, femtosecond laser pulse in a lithium triborate (LBO) crystal
C. Aparajit, Kamalesh Jana, Amit D. Lad +3
We demonstrate the highest efficiency (80%) second harmonic generation (SHG) of Joule level, 27 femtosecond, high contrast pulses in a type-I lithium triborate (LBO) crystal.…
Generation of a strong reverse shock wave in the interaction of a high-contrast high-intensity femtosecond laser pulse with a silicon target
Kamalesh Jana, Amit D. Lad, Moniruzzaman Shaikh +6
We present ultrafast pump-probe reflectivity and Doppler spectrometry of a silicon target at relativistic laser intensity. We observe an unexpected rise in reflectivity to a peak a…