Strong-field plasmonic photoemission in the mid-IR at &lt;1 GW/cm2 intensity

Teichmann, Sarah A.; Rácz, Péter; Ciappina, M. F.; Pérez-Hernández, J. A.; Thai, Alexandre; Fekete, J.; Elezzabi, A. Y.; Veisz, László; Biegert, J.; Dombi, Péter

doi:10.1038/srep07584

Cited by 34 publications

(38 citation statements)

References 36 publications

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“…The nanowire tip is surrounded by vacuum (index of refraction n = 1) and the real and imaginary parts of the wavelength-dependent dielectric functions of gold were taken from the work of Johson and Christy. 33 A perfectly matched layer boundary condition with a thickness of 1.2 µm is applied to minimize reflections of outgoing fields at the boundary of the simulation region. The angles between the facets of the nanowire are modeled by taking into account the FCC crystal structure of gold.…”

Section: Resultsmentioning

confidence: 99%

Attosecond-controlled photoemission from metal nanowire tips in the few-electron regime

et al. 2017

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Extreme nonlinear terahertz electro-optics in diamond for ultrafast pulse switching APL Photonics 2, 036106 (2017) Metal nanotip photoemitters have proven to be versatile in fundamental nanoplasmonics research and applications, including, e.g., the generation of ultrafast electron pulses, the adiabatic focusing of plasmons, and as light-triggered electron sources for microscopy. Here, we report the generation of high energy photoelectrons (up to 160 eV) in photoemission from single-crystalline nanowire tips in few-cycle, 750-nm laser fields at peak intensities of (2-7.3) × 10 12 W/cm 2 . Recording the carrier-envelope phase (CEP)-dependent photoemission from the nanowire tips allows us to identify rescattering contributions and also permits us to determine the high-energy cutoff of the electron spectra as a function of laser intensity. So far these types of experiments from metal nanotips have been limited to an emission regime with less than one electron per pulse. We detect up to 13 e/shot and given the limited detection efficiency, we expect up to a few ten times more electrons being emitted from the nanowire. Within the investigated intensity range, we find linear scaling of cutoff energies. The nonlinear scaling of electron count rates is consistent with tunneling photoemission occurring in the absence of significant charge interaction. The high electron energy gain is attributed to field-induced rescattering in the enhanced nanolocalized fields at the wires apex, where a strong CEP-modulation is indicative of the attosecond control of photoemission. © 2017 Author(s)

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Section: Resultsmentioning

confidence: 99%

Attosecond-controlled photoemission from metal nanowire tips in the few-electron regime

et al. 2017

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“…The use of nanostructures as 'spectroscopic enhancers' is getting a growing interest for several applications in spectroscopy, microscopy and sensing [1][2][3]. Many theoretical and experimental works have demonstrated that when a substrate is irradiated with a laser after NPs have been deposited on its surface, the laser electromagnetic field is locally enhanced and a measurable current due to electron field emission is induced even at relatively low irradiances (around 1 GW cm -2 ) [4][5][6]. The coupling between the laser electromagnetic field and the surface plasmons of the NPs in contact with a flat surface substrate has been investigated deeply in recent years [5][6].…”

Section: Introductionmentioning

confidence: 99%

Perspective on the use of nanoparticles to improve LIBS analytical performance: nanoparticle enhanced laser induced breakdown spectroscopy (NELIBS)

Giacomo

Dell’Aglio

Gaudiuso

et al. 2016

J. Anal. At. Spectrom.

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In this paper, the new approach for Laser Induced Breakdown Spectroscopy (LIBS) based on nanoparticle\ud deposition on the sample surface is reviewed from both fundamental and application points of view. The\ud case of Nanoparticle-Enhanced LIBS (NELIBS) of metal samples is used for describing and discussing the\ud main causes of the emission signal enhancement. A set of test cases is presented, which shows\ud enhancements up to 1–2 orders of magnitude obtained using NELIBS with respect to LIBS. The feasibility\ud and potential of NELIBS are also discussed for several analytical applications, including analysis of\ud metallic samples, transparent samples and aqueous solution

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“…Strong-field photoemission was subsequently observed by Teichmann et al [106] also in plasmonic films under exposition to femtosecond, mid-infrared pulses provided by an OPCPA source at 3.1 µm. Tunneling emission was here demonstrated at the considerably low intensity of ∼1 GW/cm 2 , with the localized plasmon field being responsible for an extension of the photoelectron energy spectrum up to two orders of magnitude.…”

Section: Photoelectron Spectroscopymentioning

confidence: 84%

Optical Parametric Amplification Techniques for the Generation of High-Energy Few-Optical-Cycles IR Pulses for Strong Field Applications

et al. 2017

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Abstract:Over the last few decades, the investigation of ultrafast phenomena occurring in atoms, molecules and solid-state systems under a strong-field regime of light-matter interaction has attracted great attention. The increasing request for a suitable optical technology is significantly boosting the development of powerful ultrafast laser sources. In this framework, Optical Parametric Amplification (OPA) is currently becoming a leading solution for applications in high-power ultra-broadband light burst generation. The main advantage provided by the OPA scheme consists of the possibility of exploring spectral ranges that are inaccessible by other laser technologies, as the InfraRed (IR) window. In this paper, we will give an overview on recent progress in the development of high-power few-optical-cycle parametric amplifiers in the near-IR and in the mid-IR spectral domain. In particular, the design of the most advanced OPA implementations is provided, containing a discussion on the key technical aspects. In addition, a review on their application to the study of strong-field ultrafast physical processes is reported.

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Strong-field plasmonic photoemission in the mid-IR at <1 GW/cm2 intensity

Cited by 34 publications

References 36 publications

Attosecond-controlled photoemission from metal nanowire tips in the few-electron regime

Attosecond-controlled photoemission from metal nanowire tips in the few-electron regime

Perspective on the use of nanoparticles to improve LIBS analytical performance: nanoparticle enhanced laser induced breakdown spectroscopy (NELIBS)

Optical Parametric Amplification Techniques for the Generation of High-Energy Few-Optical-Cycles IR Pulses for Strong Field Applications

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