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type="text/css"></style> <div id="ct" class="ct2 wp cl"> <div class="mn"> <div class="bm_haa cl"> <div class="bm_h cl"> <a href="http://www.oecr.com/portal.php?mod=rss&catid=61" class="y xi2 rss" target="_blank" title="RSS">订阅</a><h1 class="xs2">文章</h1> </div></div> <div class="kjkjb"> <div class="bm vw" style="margin-bottom:0;"> <div class="h hm"> <div class="zxtoux"><img src="http://www.oecr.com/uc_server/avatar.php?uid=54876&size=small" /></div> <h1 class="ph">德国研究小组成功将激光脉冲能量提高两倍多 </h1> <p class="xg1"> 时间：2016-2-20 17:00<a class="zz" href="home.php?mod=space&uid=54876">作者：update</a> 阅读<em id="_viewnum">(1204)</em> 评论: <a href="http://www.oecr.com/portal.php?mod=comment&id=4052&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=61" 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>德国耶拿大学19日宣布，该校光学与量子电子学研究所的一个研究小组最近成功将该校“全二极管泵浦固态激光系统”发射的激光脉冲能量提高了两倍多，这一技术可望用于改进癌症放射治疗等方面。</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"><div>德国耶拿大学19日宣布，该校光学与量子<a href="http://electronic.oecr.com" target="_blank" class="relatedlink">电子</a>学研究所的一个研究小组最近成功将该校“全二极管泵浦固态<a href="http://laser.oecr.com" target="_blank" class="relatedlink">激光</a>系统”发射的激光脉冲能量提高了两倍多，这一技术可望用于改进癌症放射治疗等方面。</div><div><br></div><div>耶拿大学当天发布的新闻公报说，该校名为ＰＯＬＡＲＩＳ的激光系统是目前世界上唯一可生成峰值功率超过200太瓦（1太瓦等于10的12次方瓦特）激光脉冲的全二极管泵浦固态激光系统。此前，这一激光系统可在不到140飞秒（1飞秒为1秒的一千万亿分之一）的激光脉冲持续时间内产生能量达14焦耳的激光脉冲。经过几个月的设备改进，该激光系统目前已能在120飞秒的激光脉冲持续时间内产生能量达50焦耳的激光脉冲。</div><div style="text-align: center;"><p><a href="data/attachment/portal/201602/20/165913zag8xfxh8zxw7f7a.jpg" target="_blank"><img src="data/attachment/portal/201602/20/165913zag8xfxh8zxw7f7a.jpg"></a></p></div><div>研究人员解释说，50焦耳相当于将一个重500克的物体抬离地面所需的能量，而将一杯水的温度升高1摄氏度所需能量比这还要高出约16倍。然而对于ＰＯＬＡＲＩＳ这种高性能激光系统来说，50焦耳的能量是在极短时间内产生的，相当于激光脉冲达到数百太瓦的峰值功率。</div><div><br></div><div>研究人员表示，ＰＯＬＡＲＩＳ系统产生高能的激光脉冲可望用于改进癌症放射治疗。下一步，研究人员还计划将ＰＯＬＡＲＩＳ系统发射激光脉冲的持续时间缩短到100飞秒以内，并将这种激光用于粒子加速等应用领域。</div><div style="text-align: center;"><p><a href="data/attachment/portal/201602/20/165618hscxyzfdde8b8xr0.jpg" target="_blank"><img src="data/attachment/portal/201602/20/165618hscxyzfdde8b8xr0.jpg"></a></p><p class="MsoNormal"><span style="mso-spacerun:'yes';font-family:宋体;font-size:10.5000pt;mso-font-kerning:0.0000pt;">欢迎关注光电<a href="http://news.oecr.com" target="_blank" class="relatedlink">资讯</a>微信公众号，每天将由光电工程师<a href="http://club.oecr.com" target="_blank" class="relatedlink">社区</a>网站(oecr.com)编辑团队为您精选行业动态，科技资讯，技术解析，光电<a href="http://www.oecr.com/portal.php?mod=list&catid=62" target="_blank" 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