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wb-otherproject-wikibase-dataitem mw-list-item"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q5493069" title="関連付けられたデータリポジトリ項目へのリンク [g]" accesskey="g"><span>ウィキデータ項目</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> </div> </div> </div> <div class="vector-column-end"> <div class="vector-sticky-pinned-container"> <nav class="vector-page-tools-landmark" aria-label="ページツール"> <div id="vector-page-tools-pinned-container" class="vector-pinned-container"> </div> </nav> <nav class="vector-appearance-landmark" aria-label="表示"> <div id="vector-appearance-pinned-container" class="vector-pinned-container"> <div id="vector-appearance" class="vector-appearance vector-pinnable-element"> <div class="vector-pinnable-header vector-appearance-pinnable-header vector-pinnable-header-pinned" data-feature-name="appearance-pinned" data-pinnable-element-id="vector-appearance" data-pinned-container-id="vector-appearance-pinned-container" data-unpinned-container-id="vector-appearance-unpinned-container" > <div class="vector-pinnable-header-label">表示</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">サイドバーに移動</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">非表示</button> </div> </div> </div> </nav> </div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">出典: フリー百科事典『ウィキペディア（Wikipedia）』</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="ja" dir="ltr"><p><b>変調分光法</b>（へんちょうぶんこうほう、<a href="/wiki/%E8%8B%B1%E8%AA%9E" title="英語">英</a>: <span lang="en">modulation spectroscopy</span>）とは、<a href="/wiki/%E5%88%86%E5%85%89%E6%B8%AC%E5%AE%9A" class="mw-redirect" title="分光測定">分光測定</a>の分野において、測定条件に周期的な<a href="/wiki/%E5%A4%89%E8%AA%BF" class="mw-redirect" title="変調">変調</a>を与え、物質の光に対する応答（<a href="/wiki/%E9%80%8F%E9%81%8E%E7%8E%87" class="mw-disambig" title="透過率">透過率</a>・<a href="/wiki/%E5%8F%8D%E5%B0%84%E7%8E%87" title="反射率">反射率</a>など）から変調に同期して変化する成分を抽出する測定方法である<sup id="cite_ref-maruzen_1-0" class="reference"><a href="#cite_note-maruzen-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup>。 </p><p><a href="/wiki/%E5%85%89%E5%90%B8%E5%8F%8E" class="mw-redirect" title="光吸収">光吸収</a>や反射スペクトルを測定するとき、<a href="/wiki/%E9%9B%91%E9%9F%B3" class="mw-redirect" title="雑音">雑音</a>などの影響により真のスペクトルを測定することが困難な場合がある。このとき、試料に対して何らかの状態の変化を起こし、それによる光応答の変化分を測定すれば、背景スペクトルを除去した高感度・高精度の測定が可能となる<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup>。<a href="/wiki/%E9%81%B7%E7%A7%BB" title="遷移">遷移</a>エネルギーの高精度測定などによく利用される。 </p><p>方法としては大きく分けて、 </p> <dl><dt>内部変調</dt> <dd>測定系のパラメーターを変化させる方法（測定光の<a href="/wiki/%E6%B3%A2%E9%95%B7" title="波長">波長</a>・<a href="/wiki/%E5%81%8F%E5%85%89" title="偏光">偏光</a>状態など）</dd> <dt>外部変調</dt> <dd>試料物質のパラメーターを変化させる方法（<a href="/wiki/%E9%9B%BB%E5%A0%B4" title="電場">電場</a>・<a href="/wiki/%E7%A3%81%E5%A0%B4" title="磁場">磁場</a>・<a href="/wiki/%E5%BF%9C%E5%8A%9B" title="応力">応力</a>・<a href="/wiki/%E6%B8%A9%E5%BA%A6" title="温度">温度</a>など）</dd></dl> <p>の2つに分類される<sup id="cite_ref-maruzen_1-1" class="reference"><a href="#cite_note-maruzen-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup>。 </p> <div class="mw-heading mw-heading2"><h2 id="脚注"><span id=".E8.84.9A.E6.B3.A8"></span>脚注</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%E5%A4%89%E8%AA%BF%E5%88%86%E5%85%89%E6%B3%95&action=edit&section=1" title="節を編集: 脚注"><span>編集</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="noprint" style="float:right; font-size:90%;">[<a href="/wiki/Help:%E8%84%9A%E6%B3%A8/%E8%AA%AD%E8%80%85%E5%90%91%E3%81%91" title="Help:脚注/読者向け"><span title="この欄の操作法">脚注の使い方</span></a>]</div> <div class="reflist" style="list-style-type: decimal;"> <ol class="references"> <li id="cite_note-maruzen-1">^ <a href="#cite_ref-maruzen_1-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-maruzen_1-1"><sup><i><b>b</b></i></sup></a> <span class="reference-text"><cite style="font-style:normal" class="citation book">菅滋正・櫛田孝司編『分光測定』丸善〈丸善実験物理学講座 8〉、1999年9月25日。<style data-mw-deduplicate="TemplateStyles:r101121245">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation.cs-ja1 q,.mw-parser-output .citation.cs-ja2 q{quotes:"「""」""『""』"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free a,.mw-parser-output .citation .cs1-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited a,.mw-parser-output .id-lock-registration a,.mw-parser-output .citation .cs1-lock-limited a,.mw-parser-output .citation .cs1-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription a,.mw-parser-output .citation .cs1-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:var(--color-success,#3a3);margin-left:0.3em}.mw-parser-output .cs1-format{font-size:95%}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}</style><a href="/wiki/ISBN" title="ISBN">ISBN</a> <a href="/wiki/%E7%89%B9%E5%88%A5:%E6%96%87%E7%8C%AE%E8%B3%87%E6%96%99/4-621-04658-6" title="特別:文献資料/4-621-04658-6">4-621-04658-6</a>。</cite><span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=%E5%88%86%E5%85%89%E6%B8%AC%E5%AE%9A&rft.date=1999-09-25&rft.series=%E4%B8%B8%E5%96%84%E5%AE%9F%E9%A8%93%E7%89%A9%E7%90%86%E5%AD%A6%E8%AC%9B%E5%BA%A7+8&rft.pub=%E4%B8%B8%E5%96%84&rft.isbn=4-621-04658-6&rfr_id=info:sid/ja.wikipedia.org:%E5%A4%89%E8%AA%BF%E5%88%86%E5%85%89%E6%B3%95"><span style="display: none;"> </span></span></span> </li> <li id="cite_note-2"><b><a href="#cite_ref-2">^</a></b> <span class="reference-text"><cite style="font-style:normal" class="citation book"><a href="/wiki/%E5%BF%9C%E7%94%A8%E7%89%A9%E7%90%86%E5%AD%A6%E4%BC%9A" title="応用物理学会">応用物理学会</a> 編「変調分光法」『応用物理用語大事典』（コンパクト版）オーム社、1999年11月15日。<link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r101121245"><a href="/wiki/ISBN" title="ISBN">ISBN</a> <a href="/wiki/%E7%89%B9%E5%88%A5:%E6%96%87%E7%8C%AE%E8%B3%87%E6%96%99/4-274-02416-4" title="特別:文献資料/4-274-02416-4">4-274-02416-4</a>。</cite><span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=bookitem&rft.btitle=%E5%A4%89%E8%AA%BF%E5%88%86%E5%85%89%E6%B3%95&rft.atitle=%E5%BF%9C%E7%94%A8%E7%89%A9%E7%90%86%E7%94%A8%E8%AA%9E%E5%A4%A7%E4%BA%8B%E5%85%B8&rft.date=1999-11-15&rft.edition=%E3%82%B3%E3%83%B3%E3%83%91%E3%82%AF%E3%83%88%E7%89%88&rft.pub=%E3%82%AA%E3%83%BC%E3%83%A0%E7%A4%BE&rft.isbn=4-274-02416-4&rfr_id=info:sid/ja.wikipedia.org:%E5%A4%89%E8%AA%BF%E5%88%86%E5%85%89%E6%B3%95"><span style="display: none;"> </span></span></span> </li> </ol></div> <style data-mw-deduplicate="TemplateStyles:r96783592">.mw-parser-output .asbox{position:relative;overflow:hidden}.mw-parser-output .asbox table{background:transparent}.mw-parser-output .asbox p{margin:0}.mw-parser-output .asbox p+p{margin-top:0.25em}.mw-parser-output .asbox{font-size:90%}.mw-parser-output .asbox-note{font-size:90%}.mw-parser-output .asbox .navbar{position:absolute;top:-0.90em;right:1em;display:none}</style><div role="note" class="metadata plainlinks asbox stub"><table role="presentation"><tbody><tr class="noresize"><td><span typeof="mw:File"><a href="/wiki/%E3%83%95%E3%82%A1%E3%82%A4%E3%83%AB:Nuvola_apps_kalzium.png" class="mw-file-description"><img alt="スタブアイコン" src="//upload.wikimedia.org/wikipedia/commons/thumb/f/f5/Nuvola_apps_kalzium.png/30px-Nuvola_apps_kalzium.png" decoding="async" width="30" height="30" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/f5/Nuvola_apps_kalzium.png/45px-Nuvola_apps_kalzium.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/f5/Nuvola_apps_kalzium.png/60px-Nuvola_apps_kalzium.png 2x" data-file-width="128" data-file-height="128" /></a></span></td><td><p class="asbox-body">この項目は、<a href="/wiki/%E7%89%A9%E7%90%86%E5%AD%A6" title="物理学">物理学</a>に関連した<b><a href="/wiki/Wikipedia:%E3%82%B9%E3%82%BF%E3%83%96" title="Wikipedia:スタブ">書きかけの項目</a></b>です。<a class="external text" href="https://ja.wikipedia.org/w/index.php?title=%E5%A4%89%E8%AA%BF%E5%88%86%E5%85%89%E6%B3%95&action=edit">この項目を加筆・訂正</a>などしてくださる<a href="/wiki/Category:%E7%89%A9%E7%90%86%E5%AD%A6%E9%96%A2%E9%80%A3%E3%81%AE%E3%82%B9%E3%82%BF%E3%83%96%E9%A0%85%E7%9B%AE" title="Category:物理学関連のスタブ項目">協力者を求めています</a>（<a href="/wiki/%E3%83%97%E3%83%AD%E3%82%B8%E3%82%A7%E3%82%AF%E3%83%88:%E7%89%A9%E7%90%86%E5%AD%A6" title="プロジェクト:物理学">プロジェクト:物理学</a>／<a href="/wiki/Portal:%E7%89%A9%E7%90%86%E5%AD%A6" title="Portal:物理学">Portal:物理学</a>）。</p></td></tr></tbody></table><style data-mw-deduplicate="TemplateStyles:r99966302">.mw-parser-output .hlist ul,.mw-parser-output .hlist ol{padding-left:0}.mw-parser-output .hlist li,.mw-parser-output .hlist dd,.mw-parser-output .hlist dt{margin-right:0;display:inline-block;white-space:nowrap}.mw-parser-output .hlist dt:after,.mw-parser-output .hlist dd:after,.mw-parser-output .hlist li:after{white-space:normal}.mw-parser-output .hlist li:after,.mw-parser-output .hlist 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