Alok Kumar Pandey

Alok Kumar Pandey Email and Phone Number

Intense Laser Adaptive Optics Expert | Physicist | PhD @ Imagine Optic
orsay, île-de-france, france
Alok Kumar Pandey's Location
Orsay, Île-de-France, France, France
About Alok Kumar Pandey

I am currently working towards Ph.D. on the subject of "Extreme Ultraviolet Vortices and their amplification in laser-driven solid-target plasma-based X-ray laser" at the Laboratoire de Physique des Gaz et des Plasmas, University of Paris-Saclay, France. The doctoral study, which is supported by the scholarship of Ministère de lʼenseignement supérieur de la recherche et de lʼinnovation (MENESR), is dedicated to the generation and characterization of fully coherent structured light pulses in the extreme ultraviolet spectral range obtained through high-harmonic generation in an extended rare-gas medium. Apart from inducing the knowledge of intricate physical processes involved in such radiation sources, the doctoral research has heavily benefitted my optical instrumentation, IR & EUV wavefront metrology, instrument handling, operating, and maintenance skills.Before Doctoral research, I graduated with the highest honors (Mention très bien) from ‘Erasmus Mundus Europhotonics-POESII International Master’ in Optics & Photonics with a dual Master diploma from Ecole Centrale Marseille, Aix-Marseille University, Marseille, France, and Universitat Politècnica de Catalunya, Barcelona, Spain. Furthermore, the award of Official Qualification Scholarship of the Karlsruhe School of Optics and Photonics, Karlsruhe Institute für Technologie, Karlsruhe, Germany, for the 2 consecutive years (2015-16 & 2016-17) supported my master studies throughout. Light-matter interaction & ultrafast optics have been my most preferred field of study, which is vividly reflected by my prior work experiences during my Master study: (1) 'Generation of millijoule femtosecond micro-Bessel beams for high aspect-ratio surface machining,' (2) 'Characterization of an Ultrafast laser-plasma source of intense hard X-ray radiation with 100 Hz Pulse repetition rate,' (3) 'Ultrashort laser-pulse deposition on wide band-gap materials: damage, ablation and energy balance'.

Alok Kumar Pandey's Current Company Details
Imagine Optic

Imagine Optic

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Intense Laser Adaptive Optics Expert | Physicist | PhD
orsay, île-de-france, france
Website:
imagine-optic.com
Employees:
57
Alok Kumar Pandey Work Experience Details
  • Imagine Optic
    Research And Development Engineer
    Imagine Optic Jul 2022 - Present
    Orsay, Île-De-France, France
    Adaptive optics and metrology solutions for ultra-intense lasers
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  • École Polytechnique
    Postdoctoral Research Fellow
    École Polytechnique Apr 2022 - Jul 2022
    Palaiseau, Île-De-France, France
    Exploiting topological properties of light to induce and control ultrafast and energy-efficient logic operations in semiconductors: European Union’s Horizon 2020 research and innovation program - OPTOlogic project https://optologic-fet.eu/
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  • Université Paris-Saclay
    Doctoral Fellow: Twisted Euv Light: Generation, Characterization, And Amplification In Xrl-Plasma
    Université Paris-Saclay Oct 2017 - Mar 2022
    Paris Area, France
    The key goal of the thesis is to demonstrate and control the production of intense and coherent femtosecond soft X-ray pulses. The idea is to play with the plasma conditions in which population inversion is obtained transiently in the soft X-ray domain. The race towards short pulse duration implies increasing the plasma density in which the X-ray lasing is obtained. The given work will be essentially experimental, however, simultaneously, it will equally be focused on the numerical simulations of lasing-plasma.
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  • Cnrs
    Research Intern: Ultrashort Laser-Pulse Deposition On Wide Band-Gap Materials: Damage And Ablation
    Cnrs Apr 2017 - Sep 2017
    Marseille Area, France
    In this work, an extensive experimental investigation of shot-to-shot laser damage, ablation, and surface energy deposition on 2 mm thick optical-grade (averag roughness ≤ λ/200) crystalline Sapphire & fused-Silica (which are materials of high regard in Optics, Photonics) scanning a range of laser fluences and pulse durations (~15-100 fs) was conducted. Simultaneously, beam-depletion experiments allowed us to scrutinize the evolution of reflection, transmission and deduced absorption as a function of laser fluence under the said experimental conditions. Our comprehensive study revealed pivotal information regarding the role of transient plasma properties during the laser pulse excitation of the target surface. Additionally, a large set of experimental data depicting the characteristics of ablated volume and the left-out craters under these conditions were obtained. Inferring the experimental results, crucial laser parameters yielding maximum ablation and energy deposition efficiencies were identified. Though the materials considered herein were limited to Sapphire & Fused-Silica, nonetheless, they can be extended to other wide band-gap dielectrics as well. Research advisor: Dr. Olivier Utéza, Directeur de recherché -Laboratory LP3 - Laser, Plasmas et Procédés Photoniques, CNRS, Marseille, France.
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  • Cnrs
    Research Intern: Characterization Of A Laser-Based High Brightness Multi-Kev K-Alpha X-Ray Source
    Cnrs Apr 2016 - Sep 2016
    Marseille Area, France
    During this period, an extensive experimental study of Kα line emission from a thick (6mm), high Z (Mo) solid target irradiated with an intense, p-polarized, 30 fs, 800 nm laser pulses, scanning a range of intensities 10^15-4x10^19 W/cm^2 at high (~10^-10 ), nominal (10^-9) and low (~10^-6 ) intensity contrast ratios was conducted. Simultaneously, the Kα x-ray conversion efficiency, photon flux, and x-ray source size were scrutinized under diverse conditions. Moreover, this comprehensive study revealed pivotal information regarding various regimes of high-intensity femtosecond laser-matter interaction. The interaction mechanism turns out to depend on almost every laser and target parameter imaginable in a non-trivial modus operandi. In particular, a compelling dependence was perceived on the laser pulse contrast ratio, laser peak intensity, and angle of incidence of the laser beam on the target. The procured results were described as an interplay of four dominant interaction mechanisms: resonance absorption, Brunel heating, plasma steepening by radiation pressure, and JxB heating by the oscillating component of the ponderomotive force. The x- radiation characteristics vividly signify these laser-matter interaction mechanisms. Furtherance to above, highest peak Kα conversion efficiency of was attained by employing high contrast ratios and irradiances.Research Advisor: Dr. Marc Sentis, Directeur de recherché - Laboratory LP3 - Laser, Plasmas et Procédés Photoniques, CNRS, Marseille, France
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  • Cnrs
    Research Intern:Generation Of Millijoule Fs Microbessel Beam For High Aspect-Ratio Surface Machining
    Cnrs Oct 2015 - Feb 2016
    Marseille Area, France
    The research project titled "Generation of millijoule femtosecond micro-Bessel beams for high-aspect-ratio surface machining" was aimed towards design and demonstration of a setup for millijoule Bessel beam generation capable of handling 25fs laser pulses using a conical prism and hence permitting the delivery of intensities exceeding the breakdown threshold of any dielectric material over micrometer dimension. Research advisors: Dr. Olivier Utéza, Directeur de recherché -Laboratory LP3 - Laser, Plasmas et Procédés Photoniques, CNRS, Marseille, France; Dr. David Grojo, Chargé de recherche - LP3/CNRS, Marseille, France
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Alok Kumar Pandey Skills

Photonics Light Matter Interaction High Energy Physics Relativistic Optics Nonlinear Optics Laser Physics Mathematica Simulations Matlab

Alok Kumar Pandey Education Details

Frequently Asked Questions about Alok Kumar Pandey

What company does Alok Kumar Pandey work for?

Alok Kumar Pandey works for Imagine Optic

What is Alok Kumar Pandey's role at the current company?

Alok Kumar Pandey's current role is Intense Laser Adaptive Optics Expert | Physicist | PhD.

What schools did Alok Kumar Pandey attend?

Alok Kumar Pandey attended Université Paris-Saclay, Ecole Centrale De Marseille, Aix-Marseille University, Universitat Politècnica De Catalunya, Karlsruhe Institute Of Technology (Kit).

What skills is Alok Kumar Pandey known for?

Alok Kumar Pandey has skills like Photonics, Light Matter Interaction, High Energy Physics, Relativistic Optics, Nonlinear Optics, Laser Physics, Mathematica, Simulations, Matlab.

Who are Alok Kumar Pandey's colleagues?

Alok Kumar Pandey's colleagues are Pauline Ogriné, Audrius Jasaitis, Martin Piponnier, Sary Saffar, Mohamed Z., Omar Kobayter, Laurent Couvet.

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