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href="home.php?mod=space&uid=54876">作者：update</a> 阅读<em id="_viewnum">(141)</em> 评论: <a href="http://www.oecr.com/portal.php?mod=comment&id=10374&idtype=aid" title="查看全部评论"><em id="_commentnum">5</em></a></p> <div class="zxfb" ><a href="http://www.oecr.com/portal.php?mod=rss&catid=57" class="y xi2 rss" target="_blank" title="RSS">订阅</a></div> </div> <!--[diy=diysummarytop]--><div id="diysummarytop" class="area"></div><!--[/diy]--> <div class="s"> <div class="ss"><div><span>导读： </span>近期，中国科学院上海光学精密机械研究所高功率激光物理联合实验室在高分辨率激光脉冲时域任意整形技术研究方面取得进展，相关研究成果以“Nonlinear Spectral-Temporal Manipulation for Chirp-Free Pulse Synthesi ...</div> </div> <!--[diy=diysummarybottom]--><div id="diysummarybottom" class="area"></div><!--[/diy]--> <div class="d"> <!--[diy=diycontenttop]--><div id="diycontenttop" class="area"></div><!--[/diy]--> <table cellpadding="0" cellspacing="0" class="vwtb"><tr><td id="article_content"><p style="box-sizing: border-box; margin: 0px; padding: 10px 0px 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-family: 微软雅黑; font-size: 16px; word-break: break-all; overflow-wrap: break-word; line-height: 30px; color: rgb(51, 51, 51); background-color: rgb(255, 255, 255); text-indent: 2em;"><span lang="zh-CN" style="box-sizing: border-box; word-break: break-all; overflow-wrap: break-word;">近期，中国科学院上海光学精密<a href="http://machine.oecr.com" target="_blank" class="relatedlink">机械</a>研究所高功率<a href="http://laser.oecr.com" target="_blank" class="relatedlink">激光</a><a href="http://theory.oecr.com" target="_blank" class="relatedlink">物理</a>联合实验室在高分辨率激光脉冲时域任意整形技术研究方面取得进展，相关研究成果以“</span>Nonlinear Spectral-Temporal Manipulation for Chirp-Free Pulse Synthesis at Picosecond Resolution”<span lang="zh-CN" style="box-sizing: border-box; word-break: break-all; overflow-wrap: break-word;">为题发表于</span><em style="box-sizing: border-box;">Photonics Research</em><span lang="zh-CN" style="box-sizing: border-box; word-break: break-all; overflow-wrap: break-word;">。</span></p><p style="box-sizing: border-box; margin: 0px; padding: 10px 0px 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-family: 微软雅黑; font-size: 16px; word-break: break-all; overflow-wrap: break-word; line-height: 30px; color: rgb(51, 51, 51); background-color: rgb(255, 255, 255); text-indent: 2em;"><span lang="zh-CN" style="box-sizing: border-box; word-break: break-all; overflow-wrap: break-word;">光学任意波形发生技术在高能量密度物理、激光微<a href="http://optics.oecr.com" target="_blank" class="relatedlink">加工</a>及光<a href="http://ofc.oecr.com" target="_blank" class="relatedlink">通信</a>等领域具有广泛的应用价值。其中，随机脉冲序列 </span>(Spike Train of Uneven Duration and Delay,STUD) <span lang="zh-CN" style="box-sizing: border-box; word-break: break-all; overflow-wrap: break-word;">作为一种可有效抑制激光与等离子体相互作用中各类不稳定性的技术方案，备受关注。然而，当前主流的脉冲整形技术存在时域分辨率不足、记录长度受限以及存在残余啁啾等问题，尚难以满足</span>STUD<span lang="zh-CN" style="box-sizing: border-box; word-break: break-all; overflow-wrap: break-word;">脉冲的技术要求。</span></p><p style="box-sizing: border-box; margin: 0px; padding: 10px 0px 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-family: 微软雅黑; font-size: 16px; word-break: break-all; overflow-wrap: break-word; line-height: 30px; color: rgb(51, 51, 51); background-color: rgb(255, 255, 255); text-indent: 2em;"><span lang="zh-CN" style="box-sizing: border-box; word-break: break-all; overflow-wrap: break-word;">针对上述挑战，研究团队创新性地提出一种基于光波导四波混频的脉冲时域任意整形技术 </span>(Four-wave Optical-waveguided Chirp-free Ultrafast Shaping,FOCUS)<span lang="zh-CN" style="box-sizing: border-box; word-break: break-all; overflow-wrap: break-word;">，并成功实现了时域分辨率</span>2ps<span lang="zh-CN" style="box-sizing: border-box; word-break: break-all; overflow-wrap: break-word;">、记录长度</span>400ps<span lang="zh-CN" style="box-sizing: border-box; word-break: break-all; overflow-wrap: break-word;">、中心波长可调谐范围</span>3.5nm<span lang="zh-CN" style="box-sizing: border-box; word-break: break-all; overflow-wrap: break-word;">的消啁啾脉冲序列输出。该技术为</span>STUD<span lang="zh-CN" style="box-sizing: border-box; word-break: break-all; overflow-wrap: break-word;">等方案所需的激光脉冲产生提供了可行的技术路径，同时具备向集成化光任意波形发生芯片发展的潜力。</span></p><p style="box-sizing: border-box; margin: 0px; padding: 10px 0px 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-family: 微软雅黑; font-size: 16px; word-break: break-all; overflow-wrap: break-word; line-height: 30px; color: rgb(51, 51, 51); background-color: rgb(255, 255, 255); text-indent: 2em;"><span lang="zh-CN" style="box-sizing: border-box; word-break: break-all; overflow-wrap: break-word;">该工作得到中国科学院战略性先导科技专项以及上海市东方英才计划等项目支持。</span></p><p style="box-sizing: border-box; margin: 0px; padding: 10px 0px 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-family: 微软雅黑; font-size: 16px; word-break: break-all; overflow-wrap: break-word; line-height: 30px; color: rgb(51, 51, 51); background-color: rgb(255, 255, 255); text-align: center;"><img src="http://siom.cas.cn/xwzx/kydt/202510/W020251020346367360623.png" name="图片 2" align="bottom" width="undefined" height="undefined" border="0" data-uploadpic="U020251020342866901402_ORIGIN.png" needdownload="true" data-needdownload="true" picname="" alt="" oldsrc="W020251020346367360623.png" style="box-sizing: border-box; display: inline-block; vertical-align: middle; border: 0px; width: 500px; height: auto;"></p><p style="box-sizing: border-box; margin: 0px; padding: 10px 0px 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-family: 微软雅黑; font-size: 16px; word-break: break-all; overflow-wrap: break-word; line-height: 30px; color: rgb(51, 51, 51); background-color: rgb(255, 255, 255); text-align: center;"><span lang="zh-CN" style="box-sizing: border-box; word-break: break-all; overflow-wrap: break-word;">图 </span>1. <span lang="zh-CN" style="box-sizing: border-box; word-break: break-all; overflow-wrap: break-word;">（</span>a<span lang="zh-CN" style="box-sizing: border-box; word-break: break-all; overflow-wrap: break-word;">）</span>FOCUS<span lang="zh-CN" style="box-sizing: border-box; word-break: break-all; overflow-wrap: break-word;">原理图；（</span>b<span lang="zh-CN" style="box-sizing: border-box; word-break: break-all; overflow-wrap: break-word;">）频率</span>-<span lang="zh-CN" style="box-sizing: border-box; word-break: break-all; overflow-wrap: break-word;">时间转换示意图；（</span>c<span lang="zh-CN" style="box-sizing: border-box; word-break: break-all; overflow-wrap: break-word;">）实验装置图。</span></p><p style="box-sizing: border-box; margin: 0px; padding: 10px 0px 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-family: 微软雅黑; font-size: 16px; word-break: break-all; overflow-wrap: break-word; line-height: 30px; color: rgb(51, 51, 51); background-color: rgb(255, 255, 255); text-align: center;"><img src="http://siom.cas.cn/xwzx/kydt/202510/W020251020346367622441_ORIGIN.png" name="图片 3" align="bottom" width="300" height="362" border="0" data-uploadpic="U020251020342866928473_ORIGIN.png" needdownload="true" data-needdownload="true" picname="" alt="" oldsrc="W020251020346367622441_ORIGIN.png" style="box-sizing: border-box; display: inline-block; vertical-align: middle; border: 0px; width: 500px; height: auto;"></p><p style="box-sizing: border-box; margin: 0px; padding: 10px 0px 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-family: 微软雅黑; font-size: 16px; word-break: break-all; overflow-wrap: break-word; line-height: 30px; color: rgb(51, 51, 51); background-color: rgb(255, 255, 255); text-align: center;"><span lang="zh-CN" style="box-sizing: border-box; word-break: break-all; overflow-wrap: break-word;">图 </span>2. (a)<span lang="zh-CN" style="box-sizing: border-box; word-break: break-all; overflow-wrap: break-word;">和</span>(b)<span lang="zh-CN" style="box-sizing: border-box; word-break: break-all; overflow-wrap: break-word;">光谱整形图；</span>(c)<span lang="zh-CN" style="box-sizing: border-box; word-break: break-all; overflow-wrap: break-word;">和</span>(d)<span lang="zh-CN" style="box-sizing: border-box; word-break: break-all; overflow-wrap: break-word;">基于四波混频的光谱转录结果图；</span>(e)<span lang="zh-CN" style="box-sizing: border-box; word-break: break-all; overflow-wrap: break-word;">和</span>(f)<span lang="zh-CN" style="box-sizing: border-box; word-break: break-all; overflow-wrap: break-word;">消啁啾的高分辨率激光脉冲序列。</span></p><p style="box-sizing: border-box; margin: 0px; padding: 10px 0px 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-family: 微软雅黑; font-size: 16px; word-break: break-all; overflow-wrap: break-word; line-height: 30px; color: rgb(51, 51, 51); background-color: rgb(255, 255, 255); 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