Enhanced terahertz emission in a large-area photoconductive antenna through an array of tightly packed sapphire fibers
Experimental observation of the enhanced terahertz (THz) emission in a large-area photoconductive antenna-emitter (LAE), boosted by an array of cylindrical sapphire-fiber-based microlenses, is reported. The observed enhancement is achieved, thanks to the sharp focusing of a pump laser beam near the...
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| Veröffentlicht in: | Applied physics letters 2024-03, Vol.124 (12) |
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| creator | Zenchenko, N. V. Lavrukhin, D. V. Galiev, R. R. Yachmenev, A. E. Khabibullin, R. A. Goncharov, Yu. G. Dolganova, I. N. Kurlov, V. N. Otsuji, T. Zaytsev, K. I. Ponomarev, D. S. |
| description | Experimental observation of the enhanced terahertz (THz) emission in a large-area photoconductive antenna-emitter (LAE), boosted by an array of cylindrical sapphire-fiber-based microlenses, is reported. The observed enhancement is achieved, thanks to the sharp focusing of a pump laser beam near the semiconductor surface, for which the high-refractive-index sapphire lenses are used. We predict numerically and confirm experimentally a considerable enhancement in the emitted THz spectral power for such a sapphire-fiber-coupled LAE, as compared to an ordinary one with an equal electrode topology. In fact, a
≃
8.5-fold THz power boost is achieved, resulting in a +9.3 dB increase in the dynamic range. The results of our findings can be used to improve the performance of large-area THz devices, aimed at meeting the demands of rapidly developed THz spectroscopy, imaging, sensing, and exposure technologies. |
| doi_str_mv | 10.1063/5.0194236 |
| format | Article |
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≃
8.5-fold THz power boost is achieved, resulting in a +9.3 dB increase in the dynamic range. The results of our findings can be used to improve the performance of large-area THz devices, aimed at meeting the demands of rapidly developed THz spectroscopy, imaging, sensing, and exposure technologies.</description><identifier>ISSN: 0003-6951</identifier><identifier>EISSN: 1077-3118</identifier><identifier>DOI: 10.1063/5.0194236</identifier><identifier>CODEN: APPLAB</identifier><language>eng</language><publisher>Melville: American Institute of Physics</publisher><subject>Antenna arrays ; Antennas ; Emitters ; Laser beams ; Microlenses ; Numerical prediction ; Sapphire ; Spectral emittance ; Topology</subject><ispartof>Applied physics letters, 2024-03, Vol.124 (12)</ispartof><rights>Author(s)</rights><rights>2024 Author(s). Published under an exclusive license by AIP Publishing.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c287t-2a5d462995e108d67ac342ce2488a1481e7e120f6a3ec157506f6b4aafacffc93</cites><orcidid>0000-0001-8448-3203 ; 0000-0002-1067-0978 ; 0000-0002-0887-0479 ; 0000-0002-7477-0572 ; 0000-0003-1703-2319 ; 0000-0002-9567-8927 ; 0000-0002-8414-7653</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://pubs.aip.org/apl/article-lookup/doi/10.1063/5.0194236$$EHTML$$P50$$Gscitation$$H</linktohtml><link.rule.ids>314,776,780,790,4498,27901,27902,76126</link.rule.ids></links><search><creatorcontrib>Zenchenko, N. V.</creatorcontrib><creatorcontrib>Lavrukhin, D. V.</creatorcontrib><creatorcontrib>Galiev, R. R.</creatorcontrib><creatorcontrib>Yachmenev, A. E.</creatorcontrib><creatorcontrib>Khabibullin, R. A.</creatorcontrib><creatorcontrib>Goncharov, Yu. G.</creatorcontrib><creatorcontrib>Dolganova, I. N.</creatorcontrib><creatorcontrib>Kurlov, V. N.</creatorcontrib><creatorcontrib>Otsuji, T.</creatorcontrib><creatorcontrib>Zaytsev, K. I.</creatorcontrib><creatorcontrib>Ponomarev, D. S.</creatorcontrib><title>Enhanced terahertz emission in a large-area photoconductive antenna through an array of tightly packed sapphire fibers</title><title>Applied physics letters</title><description>Experimental observation of the enhanced terahertz (THz) emission in a large-area photoconductive antenna-emitter (LAE), boosted by an array of cylindrical sapphire-fiber-based microlenses, is reported. The observed enhancement is achieved, thanks to the sharp focusing of a pump laser beam near the semiconductor surface, for which the high-refractive-index sapphire lenses are used. We predict numerically and confirm experimentally a considerable enhancement in the emitted THz spectral power for such a sapphire-fiber-coupled LAE, as compared to an ordinary one with an equal electrode topology. In fact, a
≃
8.5-fold THz power boost is achieved, resulting in a +9.3 dB increase in the dynamic range. The results of our findings can be used to improve the performance of large-area THz devices, aimed at meeting the demands of rapidly developed THz spectroscopy, imaging, sensing, and exposure technologies.</description><subject>Antenna arrays</subject><subject>Antennas</subject><subject>Emitters</subject><subject>Laser beams</subject><subject>Microlenses</subject><subject>Numerical prediction</subject><subject>Sapphire</subject><subject>Spectral emittance</subject><subject>Topology</subject><issn>0003-6951</issn><issn>1077-3118</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2024</creationdate><recordtype>article</recordtype><recordid>eNp9kF1LwzAYhYMoOKcX_oOAVwqd-WjT9lLG_ICBN3pd3qVv1swtqUk6mL_eynbt1eHAwznwEHLL2YwzJR-LGeN1LqQ6IxPOyjKTnFfnZMIYk5mqC35JrmLcjLUQUk7IfuE6cBpbmjBAhyH9UNzZGK131DoKdAthjRkEBNp3PnntXTvoZPdIwSV0Dmjqgh_W3dgphAAH6g1Ndt2l7YH2oL_G9Qh939mA1NgVhnhNLgxsI96ccko-nxcf89ds-f7yNn9aZlpUZcoEFG2uRF0XyFnVqhK0zIVGkVcV8LziWCIXzCiQqHlRFkwZtcoBDGhjdC2n5O642wf_PWBMzcYPwY2XjahVzYSs6mqk7o-UDj7GgKbpg91BODScNX9am6I5aR3ZhyMbtU2QRk3_wL_Ai3j3</recordid><startdate>20240318</startdate><enddate>20240318</enddate><creator>Zenchenko, N. 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We predict numerically and confirm experimentally a considerable enhancement in the emitted THz spectral power for such a sapphire-fiber-coupled LAE, as compared to an ordinary one with an equal electrode topology. In fact, a
≃
8.5-fold THz power boost is achieved, resulting in a +9.3 dB increase in the dynamic range. The results of our findings can be used to improve the performance of large-area THz devices, aimed at meeting the demands of rapidly developed THz spectroscopy, imaging, sensing, and exposure technologies.</abstract><cop>Melville</cop><pub>American Institute of Physics</pub><doi>10.1063/5.0194236</doi><tpages>5</tpages><orcidid>https://orcid.org/0000-0001-8448-3203</orcidid><orcidid>https://orcid.org/0000-0002-1067-0978</orcidid><orcidid>https://orcid.org/0000-0002-0887-0479</orcidid><orcidid>https://orcid.org/0000-0002-7477-0572</orcidid><orcidid>https://orcid.org/0000-0003-1703-2319</orcidid><orcidid>https://orcid.org/0000-0002-9567-8927</orcidid><orcidid>https://orcid.org/0000-0002-8414-7653</orcidid><oa>free_for_read</oa></addata></record> |
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| subjects | Antenna arrays Antennas Emitters Laser beams Microlenses Numerical prediction Sapphire Spectral emittance Topology |
| title | Enhanced terahertz emission in a large-area photoconductive antenna through an array of tightly packed sapphire fibers |
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