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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=62" 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">“Q开关不稳定性”是什么？ </h1> <p class="xg1"> 时间：2021-11-23 10:45<a class="zz" href="home.php?mod=space&uid=54876">作者：update</a> 阅读<em id="_viewnum">(1465)</em> 评论: <a href="http://www.oecr.com/portal.php?mod=comment&id=9364&idtype=aid" title="查看全部评论"><em id="_commentnum">5</em></a>来自: 网络平台</p> <div class="zxfb" ><a href="http://www.oecr.com/portal.php?mod=rss&catid=62" 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>“Q开关不稳定性”是什么？，其实是脉冲能量不稳定引起的无源锁模激光器的不稳定性。</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> “Q开关不稳定性”是什么？，其实是脉冲能量不稳定引起的无源锁模<a href="http://laser.oecr.com" target="_blank" class="relatedlink">激光</a>器的不稳定性。</div><div><br></div><div> 无源锁模的具有饱和吸收器的激光器（尤其是固态激光器），具有Q开关的不稳定性。</div><div><br></div><div> 在有些情况下，Q开关锁模会得到具有相对稳定参数的脉冲光束，但有时脉冲参数存在很大的涨落。</div><div><br></div><div> 通常情况下如果选取参数所需光束周期长时性能会不稳定，并且脉冲光束间的脉冲能量非常低。在这种情况下，每一光束中的脉冲由自发辐射产生，脉冲参数不能达到一个稳定状态，因为一个光束对应的时间为往返谐振腔几个环路的时间。</div><div><br></div><div> 词条Q开关锁模中讨论了抑制Q开关不稳定性的方法，也就是采用一定的脉冲能量来实现稳定连续波锁模。</div><div><br></div><div> 在有些脉冲参数取值范围内，例如超高脉冲重复速率或者输出功率高时，考虑到脉冲时间，这种方法很难实现，至少需要在某些方面做一些妥协。</div><div><br></div><div> 锁模激光器中还存在其它类型的不稳定性，在实验中与Q开关不稳定性很难区分，但是它们来源（例如，饱和吸收器的恢复时间太长）不同，因此需要采用不同的方法抑制。</div><div><br></div><div><div 0px;"="" 255);"="" 255,="" rgb(255,="" simsun;="" yahei",="" microsoft="" style="overflow-wrap: normal; color: rgb(143, 143, 143); background-color: rgb(255, 255, 255); text-indent: 28px; font-family: 微软雅黑;"><span style="overflow-wrap: normal;">免责声明：编写或转载此文是为了传递更多的信息，为光电行业尽一些绵薄之力。若文字或图片侵犯了您的合法权益或有不当之处，请作者在20个工作日之内与我们联系，我们将协调给予处理。</span></div><div 0px;"="" 255);"="" 255,="" rgb(255,="" simsun;="" yahei",="" microsoft="" start;"="" normal;="" 400;="" 14px;="" style="overflow-wrap: normal; color: rgb(143, 143, 143); background-color: rgb(255, 255, 255); text-indent: 28px; font-family: 微软雅黑;"><br style="overflow-wrap: normal;"></div><div 0px;"="" 255);"="" 255,="" rgb(255,="" simsun;="" yahei",="" microsoft="" start;"="" normal;="" 400;="" 14px;="" style="overflow-wrap: normal; color: rgb(143, 143, 143); background-color: rgb(255, 255, 255); text-indent: 28px; font-family: 微软雅黑;">联系邮箱：lm@focaloptics.com，欢迎相关行业朋友与我们约稿。谢谢。</div><div 0px;"="" 255);"="" 255,="" rgb(255,="" simsun;="" yahei",="" microsoft="" start;"="" normal;="" 400;="" 14px;="" normal;"="" 255);="" style="overflow-wrap: normal; color: rgb(143, 143, 143); background-color: rgb(255, 255, 255); text-indent: 28px; font-family: 微软雅黑;"><br style="overflow-wrap: normal;"></div><p class="MsoNormal" 0px;"="" 255);"="" 255,="" rgb(255,="" simsun;="" yahei",="" microsoft="" start;"="" normal;="" 400;="" 14px;="" style="overflow-wrap: normal; margin: 0px; padding: 0px; color: rgb(143, 143, 143); background-color: rgb(255, 255, 255); text-indent: 28px; font-family: 微软雅黑;"><span lang="EN-US" major-latin;mso-bidi-font-family:微软雅黑"="" mso-ascii-theme-font:major-latin;mso-fareast-font-family:微软雅黑;mso-hansi-theme-font:="" cambria","serif";="" style="overflow-wrap: normal; font-size: 12pt;"></span></p><p align="center" style="overflow-wrap: break-word; margin: 0px 0px 12px; padding: 10px 0px 0px; color: 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xi2"> <a href="javascript:;" onclick="portal_comment_requote(31227, '9364');">引用</a> </span> <a href="http://club.oecr.com/space-uid-79452.html" class="xi2 xw1" c="1">星期吧的夜晚</a> <span class="xg1 xw0">2021-11-23 16:13</span> </dt> <dd>我是学光学的啦。</dd> </dl><a name="comment_anchor_31225"></a> <dl id="comment_31225_li" class="ptm pbm bbda cl"> <dt class="mbm"> <span class="y xw0 xi2"> <a href="javascript:;" onclick="portal_comment_requote(31225, '9364');">引用</a> </span> <a href="http://club.oecr.com/space-uid-22168.html" class="xi2 xw1" c="1">ruffian</a> <span class="xg1 xw0">2021-11-23 15:43</span> </dt> <dd>这里还不错，挺热闹。</dd> </dl><a name="comment_anchor_31224"></a> <dl id="comment_31224_li" class="ptm pbm bbda cl"> <dt class="mbm"> <span class="y xw0 xi2"> <a href="javascript:;" onclick="portal_comment_requote(31224, '9364');">引用</a> </span> <a href="http://club.oecr.com/space-uid-30352.html" class="xi2 xw1" c="1">txcnhzqps</a> <span class="xg1 xw0">2021-11-23 15:13</span> </dt> 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