Characterization of a retroreflector array for 320-GHz interferometer system in Heliotron J
A retroreflector array, composed of a cluster of small retroreflectors, is experimentally studied for application to a Michelson-type interferometer system in the fusion plasma experiment. Such a new-type reflector has the potential to be a vital and effective tool at a spatially limited location, s...
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Veröffentlicht in: | Review of scientific instruments 2023-09, Vol.94 (9) |
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creator | Zhang, P. Ohshima, S. Zhao, H. Kobayashi, S. Kado, S. Minami, T. Kin, F. Miyashita, A. Iwata, A. Kondo, Y. Qiu, D. Wang, C. Luo, M. Konoshima, S. Inagaki, S. Okada, H. Mizuuchi, T. Nagasaki, K. |
description | A retroreflector array, composed of a cluster of small retroreflectors, is experimentally studied for application to a Michelson-type interferometer system in the fusion plasma experiment. Such a new-type reflector has the potential to be a vital and effective tool at a spatially limited location, such as on the vacuum chamber wall of plasma experimental devices. To investigate the effect of retroreflector array on the reflected beam properties, a tabletop experiment is performed with the retroreflector array composed of 4 mm corner-cube retroreflectors and with a 320-GHz (λ ∼ 0.937 mm) submillimeter wave source. An imaging camera is utilized to measure the submillimeter wave beam profile and is scanned perpendicularly to the beam propagation direction if necessary. The experimental result exhibits a diffraction effect on the reflected beam, resulting in the emergence of discrete peaks on the reflected beam profile, as predicted in the past numerical study; however, the most reflected beam power converges on the one reflected into the incident direction, resulting from a property as a retroreflector. Furthermore, the dependence of the reflected beam on the incident beam angle is characterized while fixing the detector position, and the retroreflection beam intensity is found to vary due to the diffraction effect. Such an undesired variation of beam intensity induced by the diffraction can be suppressed with a focusing lens placed in front of the detector in the practical application to an interferometer. |
doi_str_mv | 10.1063/5.0162649 |
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Such a new-type reflector has the potential to be a vital and effective tool at a spatially limited location, such as on the vacuum chamber wall of plasma experimental devices. To investigate the effect of retroreflector array on the reflected beam properties, a tabletop experiment is performed with the retroreflector array composed of 4 mm corner-cube retroreflectors and with a 320-GHz (λ ∼ 0.937 mm) submillimeter wave source. An imaging camera is utilized to measure the submillimeter wave beam profile and is scanned perpendicularly to the beam propagation direction if necessary. The experimental result exhibits a diffraction effect on the reflected beam, resulting in the emergence of discrete peaks on the reflected beam profile, as predicted in the past numerical study; however, the most reflected beam power converges on the one reflected into the incident direction, resulting from a property as a retroreflector. Furthermore, the dependence of the reflected beam on the incident beam angle is characterized while fixing the detector position, and the retroreflection beam intensity is found to vary due to the diffraction effect. Such an undesired variation of beam intensity induced by the diffraction can be suppressed with a focusing lens placed in front of the detector in the practical application to an interferometer.</description><identifier>ISSN: 0034-6748</identifier><identifier>EISSN: 1089-7623</identifier><identifier>DOI: 10.1063/5.0162649</identifier><identifier>CODEN: RSINAK</identifier><language>eng</language><publisher>Melville: American Institute of Physics</publisher><subject>Arrays ; Beams (radiation) ; Diffraction ; Heliotrons ; Interferometers ; Retroreflection ; Retroreflectors ; Scientific apparatus & instruments ; Submillimeter waves ; Vacuum chambers</subject><ispartof>Review of scientific instruments, 2023-09, Vol.94 (9)</ispartof><rights>Author(s)</rights><rights>2023 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-c320t-63bf9db4650f0f1bc61e973380382277d724a8dff1e237a7342bc653ed3a78723</cites><orcidid>0000-0002-5031-2788 ; 0000-0003-1341-4969 ; 0000-0001-6248-8695 ; 0000-0002-4808-857X ; 0000-0001-5891-0021 ; 0000-0002-3828-1827 ; 0000-0001-6423-1754 ; 0000-0003-1075-2401 ; 0000-0003-4305-7747 ; 0000-0002-7787-3307 ; 0000-0001-5318-7380</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://pubs.aip.org/rsi/article-lookup/doi/10.1063/5.0162649$$EHTML$$P50$$Gscitation$$H</linktohtml><link.rule.ids>314,776,780,790,4498,27901,27902,76127</link.rule.ids></links><search><creatorcontrib>Zhang, P.</creatorcontrib><creatorcontrib>Ohshima, S.</creatorcontrib><creatorcontrib>Zhao, H.</creatorcontrib><creatorcontrib>Kobayashi, S.</creatorcontrib><creatorcontrib>Kado, S.</creatorcontrib><creatorcontrib>Minami, T.</creatorcontrib><creatorcontrib>Kin, F.</creatorcontrib><creatorcontrib>Miyashita, A.</creatorcontrib><creatorcontrib>Iwata, A.</creatorcontrib><creatorcontrib>Kondo, Y.</creatorcontrib><creatorcontrib>Qiu, D.</creatorcontrib><creatorcontrib>Wang, C.</creatorcontrib><creatorcontrib>Luo, M.</creatorcontrib><creatorcontrib>Konoshima, S.</creatorcontrib><creatorcontrib>Inagaki, S.</creatorcontrib><creatorcontrib>Okada, H.</creatorcontrib><creatorcontrib>Mizuuchi, T.</creatorcontrib><creatorcontrib>Nagasaki, K.</creatorcontrib><title>Characterization of a retroreflector array for 320-GHz interferometer system in Heliotron J</title><title>Review of scientific instruments</title><description>A retroreflector array, composed of a cluster of small retroreflectors, is experimentally studied for application to a Michelson-type interferometer system in the fusion plasma experiment. Such a new-type reflector has the potential to be a vital and effective tool at a spatially limited location, such as on the vacuum chamber wall of plasma experimental devices. To investigate the effect of retroreflector array on the reflected beam properties, a tabletop experiment is performed with the retroreflector array composed of 4 mm corner-cube retroreflectors and with a 320-GHz (λ ∼ 0.937 mm) submillimeter wave source. An imaging camera is utilized to measure the submillimeter wave beam profile and is scanned perpendicularly to the beam propagation direction if necessary. The experimental result exhibits a diffraction effect on the reflected beam, resulting in the emergence of discrete peaks on the reflected beam profile, as predicted in the past numerical study; however, the most reflected beam power converges on the one reflected into the incident direction, resulting from a property as a retroreflector. Furthermore, the dependence of the reflected beam on the incident beam angle is characterized while fixing the detector position, and the retroreflection beam intensity is found to vary due to the diffraction effect. Such an undesired variation of beam intensity induced by the diffraction can be suppressed with a focusing lens placed in front of the detector in the practical application to an interferometer.</description><subject>Arrays</subject><subject>Beams (radiation)</subject><subject>Diffraction</subject><subject>Heliotrons</subject><subject>Interferometers</subject><subject>Retroreflection</subject><subject>Retroreflectors</subject><subject>Scientific apparatus & instruments</subject><subject>Submillimeter waves</subject><subject>Vacuum chambers</subject><issn>0034-6748</issn><issn>1089-7623</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2023</creationdate><recordtype>article</recordtype><recordid>eNp90E1LAzEQBuAgCtbqwX8Q8KLC1nxtkj1K0VYpeNGThyXdnWDK7qYm6aH99ca2Jw_OZYbwzBBehK4pmVAi-UM5IVQyKaoTNKJEV4WSjJ-iESFcFFIJfY4uYlyRXCWlI_Q5_TLBNAmC25nk_IC9xQYHSMEHsB00yQdsQjBbbPPEGSlm8x12Q16xEHwPecBxGxP0-RXPoXM-Lw_49RKdWdNFuDr2Mfp4fnqfzovF2-xl-rgomnwtFZIvbdUuhSyJJZYuG0mhUpxrwjVjSrWKCaNbaykwrozigmVTcmi5UVoxPka3h7vr4L83EFPdu9hA15kB_CbWTEsqhdBCZHrzh678Jgz5d3slpNaizOruoJrgY8wx1OvgehO2NSX1b8x1WR9jzvb-YGPj0j7Bf_APKRB7Cg</recordid><startdate>20230901</startdate><enddate>20230901</enddate><creator>Zhang, P.</creator><creator>Ohshima, S.</creator><creator>Zhao, H.</creator><creator>Kobayashi, S.</creator><creator>Kado, S.</creator><creator>Minami, T.</creator><creator>Kin, F.</creator><creator>Miyashita, A.</creator><creator>Iwata, A.</creator><creator>Kondo, Y.</creator><creator>Qiu, D.</creator><creator>Wang, C.</creator><creator>Luo, M.</creator><creator>Konoshima, S.</creator><creator>Inagaki, S.</creator><creator>Okada, H.</creator><creator>Mizuuchi, T.</creator><creator>Nagasaki, K.</creator><general>American Institute of Physics</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><scope>7X8</scope><orcidid>https://orcid.org/0000-0002-5031-2788</orcidid><orcidid>https://orcid.org/0000-0003-1341-4969</orcidid><orcidid>https://orcid.org/0000-0001-6248-8695</orcidid><orcidid>https://orcid.org/0000-0002-4808-857X</orcidid><orcidid>https://orcid.org/0000-0001-5891-0021</orcidid><orcidid>https://orcid.org/0000-0002-3828-1827</orcidid><orcidid>https://orcid.org/0000-0001-6423-1754</orcidid><orcidid>https://orcid.org/0000-0003-1075-2401</orcidid><orcidid>https://orcid.org/0000-0003-4305-7747</orcidid><orcidid>https://orcid.org/0000-0002-7787-3307</orcidid><orcidid>https://orcid.org/0000-0001-5318-7380</orcidid></search><sort><creationdate>20230901</creationdate><title>Characterization of a retroreflector array for 320-GHz interferometer system in Heliotron J</title><author>Zhang, P. ; Ohshima, S. ; Zhao, H. ; Kobayashi, S. ; Kado, S. ; Minami, T. ; Kin, F. ; Miyashita, A. ; Iwata, A. ; Kondo, Y. ; Qiu, D. ; Wang, C. ; Luo, M. ; Konoshima, S. ; Inagaki, S. ; Okada, H. ; Mizuuchi, T. ; Nagasaki, K.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c320t-63bf9db4650f0f1bc61e973380382277d724a8dff1e237a7342bc653ed3a78723</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2023</creationdate><topic>Arrays</topic><topic>Beams (radiation)</topic><topic>Diffraction</topic><topic>Heliotrons</topic><topic>Interferometers</topic><topic>Retroreflection</topic><topic>Retroreflectors</topic><topic>Scientific apparatus & instruments</topic><topic>Submillimeter waves</topic><topic>Vacuum chambers</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Zhang, P.</creatorcontrib><creatorcontrib>Ohshima, S.</creatorcontrib><creatorcontrib>Zhao, H.</creatorcontrib><creatorcontrib>Kobayashi, S.</creatorcontrib><creatorcontrib>Kado, S.</creatorcontrib><creatorcontrib>Minami, T.</creatorcontrib><creatorcontrib>Kin, F.</creatorcontrib><creatorcontrib>Miyashita, A.</creatorcontrib><creatorcontrib>Iwata, A.</creatorcontrib><creatorcontrib>Kondo, Y.</creatorcontrib><creatorcontrib>Qiu, D.</creatorcontrib><creatorcontrib>Wang, C.</creatorcontrib><creatorcontrib>Luo, M.</creatorcontrib><creatorcontrib>Konoshima, S.</creatorcontrib><creatorcontrib>Inagaki, S.</creatorcontrib><creatorcontrib>Okada, H.</creatorcontrib><creatorcontrib>Mizuuchi, T.</creatorcontrib><creatorcontrib>Nagasaki, K.</creatorcontrib><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>MEDLINE - Academic</collection><jtitle>Review of scientific instruments</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Zhang, P.</au><au>Ohshima, S.</au><au>Zhao, H.</au><au>Kobayashi, S.</au><au>Kado, S.</au><au>Minami, T.</au><au>Kin, F.</au><au>Miyashita, A.</au><au>Iwata, A.</au><au>Kondo, Y.</au><au>Qiu, D.</au><au>Wang, C.</au><au>Luo, M.</au><au>Konoshima, S.</au><au>Inagaki, S.</au><au>Okada, H.</au><au>Mizuuchi, T.</au><au>Nagasaki, K.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Characterization of a retroreflector array for 320-GHz interferometer system in Heliotron J</atitle><jtitle>Review of scientific instruments</jtitle><date>2023-09-01</date><risdate>2023</risdate><volume>94</volume><issue>9</issue><issn>0034-6748</issn><eissn>1089-7623</eissn><coden>RSINAK</coden><abstract>A retroreflector array, composed of a cluster of small retroreflectors, is experimentally studied for application to a Michelson-type interferometer system in the fusion plasma experiment. Such a new-type reflector has the potential to be a vital and effective tool at a spatially limited location, such as on the vacuum chamber wall of plasma experimental devices. To investigate the effect of retroreflector array on the reflected beam properties, a tabletop experiment is performed with the retroreflector array composed of 4 mm corner-cube retroreflectors and with a 320-GHz (λ ∼ 0.937 mm) submillimeter wave source. An imaging camera is utilized to measure the submillimeter wave beam profile and is scanned perpendicularly to the beam propagation direction if necessary. The experimental result exhibits a diffraction effect on the reflected beam, resulting in the emergence of discrete peaks on the reflected beam profile, as predicted in the past numerical study; however, the most reflected beam power converges on the one reflected into the incident direction, resulting from a property as a retroreflector. Furthermore, the dependence of the reflected beam on the incident beam angle is characterized while fixing the detector position, and the retroreflection beam intensity is found to vary due to the diffraction effect. Such an undesired variation of beam intensity induced by the diffraction can be suppressed with a focusing lens placed in front of the detector in the practical application to an interferometer.</abstract><cop>Melville</cop><pub>American Institute of Physics</pub><doi>10.1063/5.0162649</doi><tpages>8</tpages><orcidid>https://orcid.org/0000-0002-5031-2788</orcidid><orcidid>https://orcid.org/0000-0003-1341-4969</orcidid><orcidid>https://orcid.org/0000-0001-6248-8695</orcidid><orcidid>https://orcid.org/0000-0002-4808-857X</orcidid><orcidid>https://orcid.org/0000-0001-5891-0021</orcidid><orcidid>https://orcid.org/0000-0002-3828-1827</orcidid><orcidid>https://orcid.org/0000-0001-6423-1754</orcidid><orcidid>https://orcid.org/0000-0003-1075-2401</orcidid><orcidid>https://orcid.org/0000-0003-4305-7747</orcidid><orcidid>https://orcid.org/0000-0002-7787-3307</orcidid><orcidid>https://orcid.org/0000-0001-5318-7380</orcidid><oa>free_for_read</oa></addata></record> |
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source | AIP Journals Complete; Alma/SFX Local Collection |
subjects | Arrays Beams (radiation) Diffraction Heliotrons Interferometers Retroreflection Retroreflectors Scientific apparatus & instruments Submillimeter waves Vacuum chambers |
title | Characterization of a retroreflector array for 320-GHz interferometer system in Heliotron J |
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