manifestation_id original_title title_alternative title_transcription statement_of_responsibility manifestation_identifier creator contributor publisher date_of_publication pub_date year_of_publication publication_place manifestation_created_at manifestation_updated_at carrier_type content_type frequency language isbn issn doi jpno ncid lccn iss_itemno volume_number volume_number_string edition edition_string issue_number issue_number_string serial_number extent start_page end_page dimensions height width depth manifestation_price access_address manifestation_required_role abstract description identifier:unknown identifier:nbn identifier:isbn10 identifier:iss_itemno identifier:online_isbn identifier:print_isbn identifier:print_issn identifier:online_issn identifier:escidoc identifier:nims series_statement_id series_statement_original_title series_statement_title_subseries series_statement_title_subseries_transcription series_statement_title_transcription series_statement_creator series_statement_volume_number series_statement_series_master series_statement_root_manifestation_id series_statement_manifestation_id series_statement_position series_statement_note series_statement_created_at series_statement_updated_at subject:ndlsh subject:unknown subject:bsh classification:ndc8 classification:ndc9 classification:udc item_id item_identifier binding_item_identifier call_number library shelf item_note accepted_at acquired_at item_created_at item_updated_at 105421 In-situ Observation of Fiber-fuse Ignition "" "" "" 2015-12-15 21:30:42 +0900 2021-10-05 16:46:13 +0900 online_resource text unknown English "" "" https://hdl.handle.net/20.500.11932/28380 Guest "Ultrahigh-speed video recording of fiber-fuse ignition was reported for the first time. Fiber fuse was initiated in a glass ferrule in which the fiber end was in contact with cobalt oxide powder. Optical discharge emerged from a slowly moving darker radiant at about 300$\mu$m distance from the fiber end. Absence of void in the trajectory of the dark radiant implies that there is no glass-plasma interface at the radiant. Two other types of fused damage on ignition were also reported. " "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" Fiber fuse//Ultrahigh-speed videography//Laser-induced damage//Fiber fuse//Ultrahigh-speed videography//Laser-induced damage//Fiber fuse//Ultrahigh-speed videography//Laser-induced damage "" "" "" "" 105420 Ultrahigh-speed videography of fiber fuse propagation: a tool for studying void formation "" "" "" 2005-05-15 00:00:00 +0900 2005-05-15 2005 2015-12-15 21:30:41 +0900 2021-10-05 16:54:48 +0900 online_resource text unknown English "" "" https://hdl.handle.net/20.500.11932/28383 Guest "Ultrahigh-speed videography of fiber fuse propagation through single mode silica fiber revealed that asymmetric, or tailed, optical discharge pumped by more than 2.0 W of CW 1480nm light generates periodic voids, whereas symmetric one gives a thin continuous void. A number of optical micrographs showing front part of fiber fuse damage pumped by same energy were collected and sorted in the order of increasing distance between the top of the first big void and the top of the first regular void. The sorted sequence suggests the periodic void formation by the optical discharge; the discharge forms an asymmetric void and casts off its tail which shrinks to be one of regular voids. This process helps us to understand why the regular void looks like a bullet considering the internal pressure of the optical discharge and the temperature gradient along the fiber. " "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" Fiber fuse//Ultrahigh-speed videography//Laser-induced damage//Fiber fuse//Ultrahigh-speed videography//Laser-induced damage//Fiber fuse//Ultrahigh-speed videography//Laser-induced damage "" "" "" "" 103750 Ultrahigh-speed videography of fiber fuse propagation: a tool for studying void formation "" "" "" 2015-05-28 18:07:12 +0900 2023-07-31 14:26:52 +0900 online_resource text unknown English "" "" https://hdl.handle.net/20.500.11932/101927 Guest Ultrahigh-speed videography of fiber fuse propagation through single mode silica fiber revealed that asymmetric, or tailed, optical discharge pumped by more than 2.0 W of CW 1480nm light generates periodic voids, whereas symmetric one gives a thin continuous void. A number of optical micrographs showing front part of fiber fuse damage pumped by same energy were collected and sorted in the order of increasing distance between the top of the first big void and the top of the first regular void. The sorted sequence suggests the periodic void formation by the optical discharge; the discharge forms an asymmetric void and casts off its tail which shrinks to be one of regular voids. This process helps us to understand why the regular void looks like a bullet considering the internal pressure of the optical discharge and the temperature gradient along the fiber. "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" Fiber fuse//Ultrahigh-speed videography//Laser-induced damage//Fiber fuse//Ultrahigh-speed videography//Laser-induced damage//Fiber fuse//Ultrahigh-speed videography//Laser-induced damage//Fiber fuse//Ultrahigh-speed videography//Laser-induced damage "" "" "" "" 97129 web web 2023-07-31 14:26:52 +0900 2023-07-31 14:26:52 +0900 103748 In-situ Observation of Fiber-fuse Ignition "" "" "" 2015-05-28 18:07:11 +0900 2023-07-31 14:10:16 +0900 online_resource text unknown English "" "" https://hdl.handle.net/20.500.11932/101924 Guest "Ultrahigh-speed video recording of fiber-fuse ignition was reported for the first time. Fiber fuse was initiated in a glass ferrule in which the fiber end was in contact with cobalt oxide powder. Optical discharge emerged from a slowly moving darker radiant at about 300$\mu$m distance from the fiber end. Absence of void in the trajectory of the dark radiant implies that there is no glass-plasma interface at the radiant. Two other types of fused damage on ignition were also reported." "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" Fiber fuse//Ultrahigh-speed videography//Laser-induced damage//Fiber fuse//Ultrahigh-speed videography//Laser-induced damage//Fiber fuse//Ultrahigh-speed videography//Laser-induced damage//Fiber fuse//Ultrahigh-speed videography//Laser-induced damage "" "" "" "" 94006 web web 2023-07-31 14:10:16 +0900 2023-07-31 14:10:16 +0900 103480 ファイバフューズの動画に突然注目が集まった事の顛末 "" "" "" 2009-10-25 00:00:00 +0900 2009-10-25 2009 2015-05-28 18:04:51 +0900 2023-07-31 14:14:42 +0900 online_resource text unknown Japanese "" "" 67 69 https://hdl.handle.net/20.500.11932/108043 Guest 2009年7月22日、講演者が公開していたYouTube動画に1000以上のアクセス押し寄せた。その原因は技術者が集う英語圏の電子掲示板に、「車のエンジンの点火プラグをレーザに置き換える研究」が話題にのぼり、そのコメントのうちの一つに動画へのリンクが掲載されたためであった。総アクセスの数%が筆者が執筆した関係書類を求める行動に出た。 "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" Fiber fuse//YouTube//self-archiving//Fiber fuse//YouTube//self-archiving//Fiber fuse//YouTube//self-archiving//Fiber fuse//YouTube//self-archiving "" "" "" "" 94849 web web 2023-07-31 14:14:42 +0900 2023-07-31 14:14:42 +0900 103424 ファイバフューズ "" "" "" 2009-08-28 00:00:00 +0900 2009-08-28 2009 2015-05-28 18:04:19 +0900 2023-07-31 14:56:48 +0900 online_resource text unknown Japanese "" "" https://hdl.handle.net/20.500.11932/94947 Guest 光ファイバが光によって破壊されるファイバフューズ現象によって、コア部分に生成される不思議な形の空孔列について解説する。損傷生成に関する材料科学的背景を述べ、連続的な損傷パターンが生成するメカニズムを推察し、個々の損傷が不思議な形となる理由を考える。 "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" Fiber fuse//optical fiber//Fiber fuse//optical fiber//Fiber fuse//optical fiber//Fiber fuse//optical fiber "" "" "" "" 102691 web web 2023-07-31 14:56:48 +0900 2023-07-31 14:56:48 +0900