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This paper presents a simplified theoretical model for the study of emission from laser produced plasma to better understand the processes and the factors involved in the onset of saturation in plasma emission as well as in increasing…

Plasma Physics · Physics 2015-06-22 V. N. Rai

Dielectric laser acceleration is a versatile scheme to accelerate and control electrons with the help of femtosecond laser pulses in nanophotonic structures. We demonstrate here the generation of a train of electron pulses with individual…

Accelerator Physics · Physics 2020-01-29 Norbert Schönenberger , Anna Mittelbach , Peyman Yousefi , Uwe Niedermayer , Peter Hommelhoff

We have observed propagation of Edge Magneto-Plasmon (EMP) modes in graphene in the Quantum Hall regime by performing picosecond time of flight measurements between narrow contacts on the perimeter of micrometric exfoliated graphene. We…

Mesoscale and Nanoscale Physics · Physics 2014-03-05 Ivana Petkovic , F. I. B. Williams , D. Christian Glattli

Energy detection (ED) is an attractive technique for symbol detection at receivers equipped with a large number of antennas, for example in millimeter wave communication systems. This paper investigates the performance bounds of ED with…

Information Theory · Computer Science 2016-12-01 Lishuai Jing , Zoran Utkovski , Elisabeth de Carvalho , Petar Popovski

We theoretically analyze angle-resolved photo-electron spectra (ARPES) generated by the interaction of C$_{60}$ with intense, short laser pulses. In particular, we focus on the impact of the carrier-envelope phase (CEP) onto the angular…

Atomic and Molecular Clusters · Physics 2017-04-05 C. -Z. Gao , P. M. Dinh , P. -G. Reinhard , E. Suraud , C. Meier

The concept of the electron mass dressing by a powerful laser pulse is discussed. It is shown, by considering the coherent frequency combs generated out of the Compton radiation, how the electron dressed mass can be determined…

High Energy Physics - Phenomenology · Physics 2015-12-04 F. Cajiao Vélez , K. Krajewska , J. Z. Kamiński

Recently, coherent radio emission has been discovered from a number of hot magnetic stars, via the process of electron cyclotron maser emission (ECME). This emission, observed in the form of highly circularly polarized pulses, have…

Solar and Stellar Astrophysics · Physics 2020-07-15 Barnali Das , Surajit Mondal , Poonam Chandra

Main-sequence Radio Pulse emitters (MRPs) are magnetic early-type stars that produce coherent radio emission observed in the form of periodic radio pulses. The emission mechanism behind is the Electron Cyclotron Maser Emission (ECME).…

Solar and Stellar Astrophysics · Physics 2024-08-22 Barnali Das , Poonam Chandra , Veronique Petit

Compton scattering of short and ultra short (sub-cycle) laser pulses off mildly relativistic electrons is considered within a QED framework. The temporal shape of the pulse is essential for the differential cross section as a function of…

High Energy Physics - Phenomenology · Physics 2015-06-22 Alexander I. Titov , Burkhard Kampfer , Takuya Shibata , Atsushi Hosaka , Hideaki Takabe

The ability to measure and control the carrier envelope phase (CEP) of few-cycle laser pulses is of paramount importance for both frequency metrology and attosecond science. Here, we present a phase meter relying on the CEP-dependent…

This dissertation explores the interaction between high-intensity lasers and plasmas to accelerate electrons and produce radiation via experimental and computational efforts. The laser pulses used in this dissertation have ultrashort…

Plasma Physics · Physics 2022-10-19 Jinpu Lin

We report a systematic measurement of the space charge effect observed in the few-ps laser pulse regime in laser-based solid-state photoemission spectroscopy experiments. The broadening and the shift of a gold Fermi edge as a function of…

Materials Science · Physics 2010-01-13 J. Graf , S. Hellmann , C. Jozwiak , C. L. Smallwood , Z. Hussain , R. A. Kaindl , L. Kipp , K. Rossnagel , A. Lanzara

Attosecond science and frequency metrology rely on the precise measurement and control of the laser pulse waveform, a feat traditionally achieved using optoelectronic techniques. In this study, we conducted a laser-induced acoustic…

Optics · Physics 2025-04-01 Meng Han , Ming-Chang Chen , Ming-Shian Tsai , Hao Liang

Traditional radar and integrated sensing and communication (ISAC) systems often approximate targets as point sources, a simplification that fails to capture the essential scattering characteristics for many applications. This paper presents…

Signal Processing · Electrical Eng. & Systems 2025-05-01 Baptiste Sambon , François De Saint Moulin , Guillaume Thiran , Claude Oestges , Luc Vandendorpe

Electron-positron pair production by means of vacuum polarization in the presence of strong electromagnetic (EM) field of two counterpropagating laser pulses is studied. A 3-dimensional model of the focused laser pulses based on the…

Plasma Physics · Physics 2017-07-14 Chitradip Banerjee , Manoranjan P. Singh

We first report that, for planar nematic MBBA, the electroconvection threshold voltage has a nonmonotonic temperature dependence, with a well-defined minimum, and a slope of about 0.12 V/degree near room temperature. Motivated by this…

Soft Condensed Matter · Physics 2009-11-10 N. C. Giebink , E. R. Johnson , S. R. Saucedo , E. W. Miles , K. K. Vardanyan , D. R. Spiegel , C. C. Allen

We report experimental evidence of electrostatic inhibition of fast electrons, generated in a highly resistive material upon irradiation with an intense ultra-short ($10^{16} W/cm^{2}$, $100 fmsec$) laser pulse. The experiment involves…

Plasma Physics · Physics 2007-05-23 A. S. Sandhu , S. Sengupta , A. Das , A. K. Dharmadhikari , G. R. Kumar , P. K. Kaw

The electromagnetic radiation emitted by an ultra-relativistic accelerated electron is extremely sensitive to the precise shape of the field driving the electron. We show that the angular distribution of the photons emitted by an electron…

Accelerator Physics · Physics 2014-11-20 F. Mackenroth , A. Di Piazza , C. H. Keitel

Determining the pulse duration of femtosecond electron bunches is challenging and often experimentally invasive. An effective method for measuring the duration based on the time-dependent variations in electron beam divergence induced by a…

Accelerator Physics · Physics 2025-07-01 Andreas Seidel , Carola Zepter , Alexander Sävert , Stephan Kuschel , Matt Zepf

This study investigates the localized electron heating in a bulk overdense plasma. The method relies on using a time dependent magnetic field. An initially high external magnetic field imposed on the overdense plasma target enables the…

Plasma Physics · Physics 2025-07-04 Rohit Juneja , Trishul Dhalia , Amita Das