Laser Focusing System for High Brightness Polarized Electron Source for SPLEEM
For construction of a high brightness polarized electron source for SPLEEM (Spin Polarized Low Energy Electronic Microscope), a new transmission type photocathode has been developed at Nagoya Univ. In our scheme, a laser light is injected from backside of the photocathode and an electron beam is emi...
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| Veröffentlicht in: | AIP conference proceedings 2007-01, Vol.915 (1), p.1081-1084 |
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| container_title | AIP conference proceedings |
| container_volume | 915 |
| creator | Mano, A Yamamoto, N Tamagaki, K Okumi, S Yamamoto, M Kuwahara, M Sakai, R Morino, T Utsu, A Nakanishi, T Ohshima, T |
| description | For construction of a high brightness polarized electron source for SPLEEM (Spin Polarized Low Energy Electronic Microscope), a new transmission type photocathode has been developed at Nagoya Univ. In our scheme, a laser light is injected from backside of the photocathode and an electron beam is emitted forward from the surface. A high numerical aperture lens with a short focal length can focus the laser lights into a small spot of photocathode. A laser spot with a diameter of 2.2mum could be achieved by our laser system, and it contributed to realize the high beam brightness of 105A*cm-2*sr-1 or more for a total current of 5muA. |
| doi_str_mv | 10.1063/1.2750957 |
| format | Article |
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In our scheme, a laser light is injected from backside of the photocathode and an electron beam is emitted forward from the surface. A high numerical aperture lens with a short focal length can focus the laser lights into a small spot of photocathode. A laser spot with a diameter of 2.2mum could be achieved by our laser system, and it contributed to realize the high beam brightness of 105A*cm-2*sr-1 or more for a total current of 5muA.</abstract><cop>United States</cop><doi>10.1063/1.2750957</doi><tpages>4</tpages><oa>free_for_read</oa></addata></record> |
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| ispartof | AIP conference proceedings, 2007-01, Vol.915 (1), p.1081-1084 |
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| language | eng |
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| source | AIP Journals Complete |
| subjects | APERTURES BEAM LUMINOSITY CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ELECTRON BEAMS ELECTRON MICROSCOPY ELECTRON SOURCES LASER RADIATION MICRO AMP BEAM CURRENTS PHOTOCATHODES POLARIZATION SPIN ORIENTATION SURFACES |
| title | Laser Focusing System for High Brightness Polarized Electron Source for SPLEEM |
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