Observation of two-photon photoemission from cesium telluride photocathodes excited by a near-infrared laser
We explore the nonlinear photoemission in cesium telluride (Cs2Te) photocathodes where an ultrashort (∼100 fs full width at half max) 800-nm infrared laser is used as the drive-laser in lieu of the typical ∼266-nm ultraviolet laser. An important figure of merit for photocathodes, the quantum efficie...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Panuganti, H [verfasserIn] |
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| Format: |
Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2017 |
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| Rechteinformationen: |
Nutzungsrecht: © Author(s) |
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| Schlagwörter: |
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| Übergeordnetes Werk: |
Enthalten in: Applied physics letters - Melville, NY : AIP, 1962, 110(2017), 9 |
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volume:110 ; year:2017 ; number:9 |
| Links: |
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| DOI / URN: |
10.1063/1.4977884 |
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OLC1991924410 |
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| 520 | |a We explore the nonlinear photoemission in cesium telluride (Cs2Te) photocathodes where an ultrashort (∼100 fs full width at half max) 800-nm infrared laser is used as the drive-laser in lieu of the typical ∼266-nm ultraviolet laser. An important figure of merit for photocathodes, the quantum efficiency, we define here for nonlinear photoemission processes in order to compare with linear photoemission. The charge against drive-laser (infrared) energy is studied for different laser energy and intensity values and cross-compared with previously performed similar studies on copper [P. Musumeci et al., Phys. Rev. Lett. 104, 084801 (2010)], a metallic photocathode. We particularly observe two-photon photoemission in Cs2Te using the infrared laser in contrast to the anticipated three-photon process as observed for metallic photocathodes. | ||
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10.1063/1.4977884 doi PQ20170721 (DE-627)OLC1991924410 (DE-599)GBVOLC1991924410 (PRQ)a1332-30554bf49b23eec421a1b5cd5bc3610f03116d38b484d9bad42860f0206b520a0 (KEY)0013165220170000110000900000observationoftwophotonphotoemissionfromcesiumtellu DE-627 ger DE-627 rakwb eng 530 DNB Panuganti, H verfasserin aut Observation of two-photon photoemission from cesium telluride photocathodes excited by a near-infrared laser 2017 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier We explore the nonlinear photoemission in cesium telluride (Cs2Te) photocathodes where an ultrashort (∼100 fs full width at half max) 800-nm infrared laser is used as the drive-laser in lieu of the typical ∼266-nm ultraviolet laser. An important figure of merit for photocathodes, the quantum efficiency, we define here for nonlinear photoemission processes in order to compare with linear photoemission. The charge against drive-laser (infrared) energy is studied for different laser energy and intensity values and cross-compared with previously performed similar studies on copper [P. Musumeci et al., Phys. Rev. Lett. 104, 084801 (2010)], a metallic photocathode. We particularly observe two-photon photoemission in Cs2Te using the infrared laser in contrast to the anticipated three-photon process as observed for metallic photocathodes. Nutzungsrecht: © Author(s) Physics Accelerator Physics Piot, P oth Enthalten in Applied physics letters Melville, NY : AIP, 1962 110(2017), 9 (DE-627)12951568X (DE-600)211245-0 (DE-576)014926210 0003-6951 nnns volume:110 year:2017 number:9 http://dx.doi.org/10.1063/1.4977884 Volltext http://dx.doi.org/10.1063/1.4977884 http://arxiv.org/abs/1612.02956 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY GBV_ILN_21 GBV_ILN_32 GBV_ILN_55 GBV_ILN_70 GBV_ILN_2004 GBV_ILN_2192 GBV_ILN_2279 GBV_ILN_4319 AR 110 2017 9 |
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Observation of two-photon photoemission from cesium telluride photocathodes excited by a near-infrared laser |
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We explore the nonlinear photoemission in cesium telluride (Cs2Te) photocathodes where an ultrashort (∼100 fs full width at half max) 800-nm infrared laser is used as the drive-laser in lieu of the typical ∼266-nm ultraviolet laser. An important figure of merit for photocathodes, the quantum efficiency, we define here for nonlinear photoemission processes in order to compare with linear photoemission. The charge against drive-laser (infrared) energy is studied for different laser energy and intensity values and cross-compared with previously performed similar studies on copper [P. Musumeci et al., Phys. Rev. Lett. 104, 084801 (2010)], a metallic photocathode. We particularly observe two-photon photoemission in Cs2Te using the infrared laser in contrast to the anticipated three-photon process as observed for metallic photocathodes. |
| abstractGer |
We explore the nonlinear photoemission in cesium telluride (Cs2Te) photocathodes where an ultrashort (∼100 fs full width at half max) 800-nm infrared laser is used as the drive-laser in lieu of the typical ∼266-nm ultraviolet laser. An important figure of merit for photocathodes, the quantum efficiency, we define here for nonlinear photoemission processes in order to compare with linear photoemission. The charge against drive-laser (infrared) energy is studied for different laser energy and intensity values and cross-compared with previously performed similar studies on copper [P. Musumeci et al., Phys. Rev. Lett. 104, 084801 (2010)], a metallic photocathode. We particularly observe two-photon photoemission in Cs2Te using the infrared laser in contrast to the anticipated three-photon process as observed for metallic photocathodes. |
| abstract_unstemmed |
We explore the nonlinear photoemission in cesium telluride (Cs2Te) photocathodes where an ultrashort (∼100 fs full width at half max) 800-nm infrared laser is used as the drive-laser in lieu of the typical ∼266-nm ultraviolet laser. An important figure of merit for photocathodes, the quantum efficiency, we define here for nonlinear photoemission processes in order to compare with linear photoemission. The charge against drive-laser (infrared) energy is studied for different laser energy and intensity values and cross-compared with previously performed similar studies on copper [P. Musumeci et al., Phys. Rev. Lett. 104, 084801 (2010)], a metallic photocathode. We particularly observe two-photon photoemission in Cs2Te using the infrared laser in contrast to the anticipated three-photon process as observed for metallic photocathodes. |
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| container_issue |
9 |
| title_short |
Observation of two-photon photoemission from cesium telluride photocathodes excited by a near-infrared laser |
| url |
http://dx.doi.org/10.1063/1.4977884 http://arxiv.org/abs/1612.02956 |
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| author2 |
Piot, P |
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| doi_str |
10.1063/1.4977884 |
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2024-07-04T03:54:09.125Z |
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