Femtosecond laser-induced electron emission from nanodiamond ...- femtosecond laser-induced electron emission from nanodiamond-coated tungsten needle tips ,We are not allowed to display external PDFs yet. You will be redirected to the full text document in the repository in a few seconds, if not click here.click here. Femtosecond laser-induced electron emission from nanodiamond ...摘要： We present femtosecond laser-induced electron emission from nanodiamond-coated tungsten tips. Based on the shortness of the femtosecond laser pulses, electrons can be photo-excited for wavelengths from the infrared (1932 nm) to the ultraviolet (235 nm) because multi-photon excitation becomes efficient over the entire spectral range.
This paper reports results of the experimental observation of emission from single diamond field emitter tips when triggered by an ultra-short laser pulse. It has been proposed that single diamond tip emitters can be employed for production of small tightly focused electron beams for dielectric laser accelerators (DLAs) that accelerate particles using the energy of light produced by infrared ...
We have investigated emission patterns and energy spectra of electrons from a tungsten nanotip induced by circularly polarized femtosecond laser pulses. Variations of emission patterns were observed for different helicities of circular polarization while the energy spectra remained almost identical. The physics behind this difference in emission patterns is the change in propagation directions ...
We present femtosecond laser-induced electron emission from nanodiamond-coated tungsten tips. Based on the shortness of the femtosecond laser pulses, electrons can be photo-excited for wavelengths from the infrared (1932 nm) to the ultraviolet (235 nm) because multi-photon excitation becomes efficient over the entire spectral range. Depending on the laser wavelength, we find different dominant ...
List of Publication » Femtosecond Laser-Induced Electron Emission from Nanodiamond-Coated Tungsten Needle Tips Home. Research Projects. Publications.
100V and an average laser power of 100 mW. The electron emission exhibited linear dichroism and was obtained under moder-ate vacuum conditions, similar to that of metallic tips. This source of spin-polarized electron pulses is “fast” in the sense that the electron emission process is of comparable duration to the laser pulses that initiate it.
High spatial coherence is a result of small electron source size. High temporal coherence is a result of narrow beam energy spread and could be realized by a low source work function 5,6,7.The use ...
This paper presents an analytical quantum model for photoemission from metal surfaces coated with an ultrathin dielectric, by solving the 1D time-dependent Schrödinger equation subject to an oscill...
摘要： We present femtosecond laser-induced electron emission from nanodiamond-coated tungsten tips. Based on the shortness of the femtosecond laser pulses, electrons can be photo-excited for wavelengths from the infrared (1932 nm) to the ultraviolet (235 nm) because multi-photon excitation becomes efficient over the entire spectral range.
Femtosecond Laser-Induced Electron Emission from Nanodiamond-Coated Tungsten Needle Tips In: Physical Review Letters 123 ( 2019 ), Article No.: 146802 ISSN: 0031-9007
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List of Publication » Femtosecond Laser-Induced Electron Emission from Nanodiamond-Coated Tungsten Needle Tips Home. Research Projects. Publications.
We present femtosecond electron emission from a tip-shaped metal-semiconductor heterostructure. By coating tungsten needle tips with thin nanodiamond (50-200 nm), we combine the high electron beam quality of tip-shaped emitters with the robustness and the negative electron affinity of diamond.
High spatial coherence is a result of small electron source size. High temporal coherence is a result of narrow beam energy spread and could be realized by a low source work function 5,6,7.The use ...
Request PDF | Femtosecond laser-induced electron emission from nanodiamond-coated tungsten needle tips | We present femtosecond laser-induced electron emission from nanodiamond-coated tungsten tips.
100V and an average laser power of 100 mW. The electron emission exhibited linear dichroism and was obtained under moder-ate vacuum conditions, similar to that of metallic tips. This source of spin-polarized electron pulses is “fast” in the sense that the electron emission process is of comparable duration to the laser pulses that initiate it.
We are not allowed to display external PDFs yet. You will be redirected to the full text document in the repository in a few seconds, if not click here.click here.
We present femtosecond laser-induced electron emission from nanodiamond-coated tungsten tips. Based on the shortness of the femtosecond laser pulses, electrons can be photo-excited for wavelengths from the infrared (1932 nm) tothe ultraviolet (235 nm) because multi-photon excitation becomes efficient over the entire spectral range.
On the role of surface plasmon polaritons in the formation of laser-induced periodic surface structures upon irradiation of silicon by femtosecond-laser pulses. J Appl Phys 106, 104910 (2009). doi: 10.1063/1.3261734. CrossRef Google Scholar.
Nanodiamond-coated tungsten needle tips: Fabrication and characterization of a novel electron source designed for high brightness femtosecond laser-induced emission January 2021 Thesis for: Doctoral
We present femtosecond laser-induced electron emission from nanodiamond-coated tungsten tips. Based on the shortness of the femtosecond laser pulses, electrons can be photoexcited for wavelengths from the infrared (1932 nm) to the ultraviolet (235 nm) because multiphoton excitation becomes efficient over the entire spectral range.
We present femtosecond laser-induced electron emission from nanodiamond-coated tungsten tips. Based on the shortness of the femtosecond laser pulses, electrons can be photoexcited for wavelengths from the infrared (1932 nm) to the ultraviolet (235 nm) because multiphoton excitation becomes efficient over the entire spectral range. Depending on ...
We present femtosecond laser-induced electron emission from nanodiamond-coated tungsten tips. Based on the shortness of the femtosecond laser pulses, electrons can be photoexcited for wavelengths from the infrared (1932 nm) to the ultraviolet (235 nm) because multiphoton excitation becomes efficient over the entire spectral range. Depending on the laser wavelength, we find different dominant ...
List of Publication » Femtosecond Laser-Induced Electron Emission from Nanodiamond-Coated Tungsten Needle Tips Home. Research Projects. Publications.
Electron emission from hafnium carbide (HfC) field emission tips induced by a sub-10-fs, 150-MHz repetition rate Ti:sapphire laser is studied. Two-photon emission is observed at low power with a moderate electric bias field applied to the tips. As the bias field and/or laser power is increased, the average current becomes dominated by thermally enhanced field emission due to laser heating ...
