Isolated attosecond pulse in the water window from many-cycle laser-driven plasma mirrors without pulse engineering

Chen, Zi-Yu

doi:10.1364/ol.43.002114

Cited by 9 publications

(4 citation statements)

References 40 publications

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“…Use of two counter-rotating circularly polarized laser fields has lead to the breakthrough of circularly polarized high harmonic [3][4][5] and isolated attosceond pulse [6] generation experimentally. Later, it was numerically demonstrated that circularly polarized XUV and attosceond pulses can also be generated via HHG from relativistic plasma surfaces [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Circularly polarized extreme ultraviolet high harmonic generation in graphene

Chen¹,

Qin²

2019

Opt. Express

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Circularly polarized extreme ultraviolet (XUV) radiation is highly interesting for investigation of chirality-sensitive light-matter interactions. Recent breakthroughs have enabled generation of such light sources via high harmonic generation (HHG) from rare gases. There is a growing interest in extending HHG medium from gases to solids, especially to 2D materials, as they hold great promise to develop ultra-compact solid-state photonic devices and provide insights into electronic properties of the materials themselves. However, HHG in graphene driven by terahertz to mid-infrared fields reported so far only generate low harmonic orders, and furthermore no harmonics driven by circularly polarized lasers. Here, using first-principles simulations within a time-dependent density-functional theory framework, we show that it is possible to generate HHG extending to the XUV spectral region in monolayer extended graphene excited by near-infrared lasers. Moreover, we demonstrate that a single circularly polarized driver is enough to ensure HHG in graphene with circular polarization. The corresponding spectra reflect the six-fold rotational symmetry of the graphene crystal. Extending HHG in graphene to the XUV spectral regime and realizing circular polarization represent an important step towards the development of novel nanoscale attosecond photonic devices and numerous applications such as spectroscopic investigation and nanoscale imaging of ultrafast chiral and spin dynamics in graphene and other 2D materials.

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Section: Introductionmentioning

confidence: 99%

Circularly polarized extreme ultraviolet high harmonic generation in graphene

Chen¹,

Qin²

2019

Opt. Express

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“…The underlying mechanism is generally described as relativistically oscillating mirrors (ROM) [22][23][24][25][26][27][28]. While HHG from ROM with controllable polarization [29][30][31][32][33][34] (i.e., beyond linear polarization) and vortex wavefront [35][36][37] (i.e., with orbital angular momentum, OAM) has been investigated intensively, HHG with vector beam characteristics has not been studied yet. Very recently, Zaïm ea al.…”

Section: Introductionmentioning

confidence: 99%

Intense high harmonic vector beams from relativistic plasma mirrors

Chen,

2020

Preprint

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Vector beam, with a spatial nonuniform polarization distribution, is important for many applications due to its unique field characteristics and novel effects when interacting with matter. Here through three-dimensional particle-in-cell simulations, we demonstrate that intense vector beams in the extreme-ultraviolet to x-ray spectral region can be generated by means of high harmonic generation (HHG) in the relativistic regime. The vector features of the fundamental laser beam can be transferred to the higher frequency emission coherently during the extreme nonlinear HHG dynamics from relativistic plasma mirrors. The vector harmonic beams can be synthesized into attosecond vector beams. It is also possible to generate vector harmonic beam carrying orbital angular momentum. Such bright vortices and vector light sources present new opportunities in various applications such as imaging with high spatial and temporal resolution, ultrafast magnetic spectroscopy, and particle manipulation.

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“…One way to reach even more extreme intensities is by focusing such bursts generated from self-generated 35 or manufactured 36,37 spherical or groove-shaped 29 plasma mirrors. Furthermore, recently discussed applications are related to the creation of compact sources of bright XUV pulses [38][39][40][41] with controllable ellipticity 42 and of bright gamma rays 43 emitted by the electrons in this regime of interaction. Since the generated XUV bursts can reach relativistic intensities for the XUV range of frequencies 44 , they can also be used for driving wakefields in solids 45,46 .…”

Section: Introductionmentioning

confidence: 99%

Physics of the laser-plasma interface in the relativistic regime of interaction

Wettervik,

Marklund,

Gonoskov

2019

Preprint

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The reflection of intense laser radiation from solids appears as a result of relativistic dynamics of the electrons driven by both incoming and self-generated electromagnetic fields at the periphery of the emerging dense plasma. In the case of highly-relativistic motion, electrons tend to form a thin oscillating layer, which makes it possible to model the interaction and obtain the temporal structure of the reflected radiation. The modelling reveals the possibility and conditions for producing singularly intense and short XUV bursts of radiation, which are interesting for many applications. However, the intensity and duration of the XUV bursts, as well as the high-energy end of the harmonic spectrum, depends on the thickness of the layer and its internal structure which are not assessed by such macroscopic modelling. Here we analyse the microscopic physics of this layer and clarify how its parameters are bound and how this controls outlined properties of XUV bursts.

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Isolated attosecond pulse in the water window from many-cycle laser-driven plasma mirrors without pulse engineering

Cited by 9 publications

References 40 publications

Circularly polarized extreme ultraviolet high harmonic generation in graphene

Circularly polarized extreme ultraviolet high harmonic generation in graphene

Intense high harmonic vector beams from relativistic plasma mirrors

Physics of the laser-plasma interface in the relativistic regime of interaction

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