Electron emission from LiNbO3 crystal excited by ultraviolet laser

Kisa, T.; Murakami, K.; Abo, S.; Wakaya, F.; Takai, M.; Ishida, T.

doi:doi:10.1116/1.3333438

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Journal of Vacuum Science & Technology B / Volume 28 / Issue 2 / PAPERS FROM THE 22nd INTERNATIONAL VACUUM NANOELECTRONICS CONFERENCE / Materials

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J. Vac. Sci. Technol. B 28, C2B27 (2010); http://dx.doi.org/10.1116/1.3333438 (3 pages)

Electron emission from LiNbO₃ crystal excited by ultraviolet laser

T. Kisa¹, K. Murakami¹, S. Abo¹, F. Wakaya¹, M. Takai¹, and T. Ishida²

¹Center for Quantum Science and Technology Under Extreme Conditions and Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-8531, Japan
²AdTech Sensing Research, Inc., 116-5-407 Nakago, Toyohashi, Aichi 441-8031, Japan

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(Published online 29 March 2010)

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X-ray generation by a thermally heated LiNbO₃ crystal and effect of ultraviolet (UV) laser light irradiation to a LiNbO₃ crystal on pyroelectric electron emission were investigated. The x ray was detected with a gap distance of 15 mm between the surface of the crystal and the anode, whereas it was not detected with a gap distance of ∼ 200 μm. The dependence of the electron emission excited by UV laser irradiation on the vacuum pressure, laser power density, and gap distance between the crystal and the anode was measured. The electron emission showed a fast response with a rise time of 1 μs to the laser irradiation. The emission current was 45 nA with a laser power density of 6.6 MW/cm² with a gap distance of 125 μm between the surface of the crystal and the anode.

Article Outline

INTRODUCTION
EXPERIMENT
RESULTS AND DISCUSSION
CONCLUSION

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KEYWORDS and PACS

Keywords

electron field emission, lithium compounds, pyroelectricity, ultraviolet radiation effects, LiNbO3, Cu

PACS

79.70.+q

Field emission, ionization, evaporation, and desorption
61.80.Ba

Ultraviolet, visible, and infrared radiation effects (including laser radiation)
77.70.+a

Pyroelectric and electrocaloric effects

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History

Received 28 October 2009
Accepted 4 February 2010
Published online 29 March 2010

Digital Object Identifier

http://dx.doi.org/10.1116/1.3333438

PUBLICATION DATA

ISSN

1071-1023 (print)

1520-8567 (online)

Publisher

American Vacuum Society

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