High-extinction electron pulses by laser-triggered emission from a Schottky emitter

Yonatan Israel; Adam J. Bowman; Brannon B. Klopfer; Stewart A. Koppell; Mark A. Kasevich

doi:10.1063/5.0028493

High-extinction electron pulses by laser-triggered emission from a Schottky emitter

Yonatan Israel, Adam J. Bowman, Brannon B. Klopfer, Stewart A. Koppell, Mark A. Kasevich

Research output: Contribution to journal › Article › peer-review

Abstract

We study electron emission from a Schottky tip induced by nanosecond laser pulses. Prompt sub-nanosecond emission is observed at low laser power, with moderate voltage bias applied to the tip. We show that electron pulses demonstrate high extinction with electron emission after the pulse suppressed by up to 92 dB. Photoemission is shown to be highly nonlinear with laser intensity while maintaining nearly linear field emission, as probed by the laser polarization dependence. We suggest the emission is described by a photo-assisted thermally enhanced field emission process.

Original language	English
Article number	194101
Journal	Applied Physics Letters
Volume	117
Issue number	19
DOIs	https://doi.org/10.1063/5.0028493
State	Published - 9 Nov 2020
Externally published	Yes

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/5.0028493

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title = "High-extinction electron pulses by laser-triggered emission from a Schottky emitter",

abstract = "We study electron emission from a Schottky tip induced by nanosecond laser pulses. Prompt sub-nanosecond emission is observed at low laser power, with moderate voltage bias applied to the tip. We show that electron pulses demonstrate high extinction with electron emission after the pulse suppressed by up to 92 dB. Photoemission is shown to be highly nonlinear with laser intensity while maintaining nearly linear field emission, as probed by the laser polarization dependence. We suggest the emission is described by a photo-assisted thermally enhanced field emission process.",

author = "Yonatan Israel and Bowman, {Adam J.} and Klopfer, {Brannon B.} and Koppell, {Stewart A.} and Kasevich, {Mark A.}",

note = "Publisher Copyright: {\textcopyright} 2020 Author(s).",

year = "2020",

month = nov,

day = "9",

doi = "10.1063/5.0028493",

language = "الإنجليزيّة",

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AU - Israel, Yonatan

AU - Bowman, Adam J.

AU - Klopfer, Brannon B.

AU - Koppell, Stewart A.

AU - Kasevich, Mark A.

PY - 2020/11/9

Y1 - 2020/11/9

N2 - We study electron emission from a Schottky tip induced by nanosecond laser pulses. Prompt sub-nanosecond emission is observed at low laser power, with moderate voltage bias applied to the tip. We show that electron pulses demonstrate high extinction with electron emission after the pulse suppressed by up to 92 dB. Photoemission is shown to be highly nonlinear with laser intensity while maintaining nearly linear field emission, as probed by the laser polarization dependence. We suggest the emission is described by a photo-assisted thermally enhanced field emission process.

AB - We study electron emission from a Schottky tip induced by nanosecond laser pulses. Prompt sub-nanosecond emission is observed at low laser power, with moderate voltage bias applied to the tip. We show that electron pulses demonstrate high extinction with electron emission after the pulse suppressed by up to 92 dB. Photoemission is shown to be highly nonlinear with laser intensity while maintaining nearly linear field emission, as probed by the laser polarization dependence. We suggest the emission is described by a photo-assisted thermally enhanced field emission process.

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U2 - 10.1063/5.0028493

DO - 10.1063/5.0028493

M3 - مقالة

SN - 0003-6951

VL - 117

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 19

M1 - 194101

ER -

High-extinction electron pulses by laser-triggered emission from a Schottky emitter

Abstract

All Science Journal Classification (ASJC) codes

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