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准连续的还是调Q的?<br /> 原因很明显，就是刚加电流时，晶体热透镜效应需要时间稳定，这样腔有一个从非稳进入稳腔的过程，因此功率会不稳定。3秒钟已经很快了。</div> <div class="postmsg">赞同二楼的说的观点，这样你可以通过采用非对称谐振腔来解决，具体把你的腔型参数说一下吧？可以替你模拟一下，稳区与非稳区的过程。</div> <div class="postmsg">首先谢谢大家的帮助。我们的激光器：7*150的晶体，全反是6米凸镜，输出是平镜，放电的波形是555V，0.3ms130A+1.2ms190A+0.3ms130A,40HZ.我们也清楚从非稳进入稳区需要一定的时间，现在请问的就是有什么方法或者技巧来缩短这个延时时间呢？客户认为等待3秒降低了他们的工作效率。</div> <div class="postmsg">还需要一些参数才能模拟腔的情况及稳区与非稳区的情况，<br /> 腔的情况（总腔长、晶体到两腔镜的距离）和具体的晶体的掺杂情况（确定晶体的屈光度）是否测定过热焦距？以及多大的泵浦功率？</div> <div class="postmsg">不出光的时候给点低过阈值的电流给晶体“保温”行不？</div> <div class="postmsg">再次谢谢大家的帮助。7*150的晶体，全反是6米凸镜，输出是平镜，腔长是650mm,棒到凸镜是230mm,到输出平镜是260mm,浓度1.0，屈光度40（顺便请问一下屈光度对激光有什么影响），热焦距大约110mm在泵浦功率17KW时，麻烦帮仿真一下。再也不能这样说的方法挺好啊，只有在电源上加上预热电流才能实现啊，不过电源的波形是固定的。</div> <div class="postmsg"><i class="pstatus"> 本帖最后由 dabaorabbit 于 2011-10-21 10:52 编辑 </i><br /> <br /> <img src="static/image/smiley/default/smile.gif" smilieid="1" border="0" alt="" /> 呵呵...</div> <div class="postmsg">非常感谢dabaorabbit的模拟资料。先回答你的几个问题：泵浦功率一直是17KW。我们的焊接都是从零一次加到17KW焊接持续10S，问题就发生在从零开始加的上面，如果是连续工作几分钟甚至更长时间这个等待3秒就无所谓了。因为条件近似相同出光阈值大致相等。水温设在了22。另外我还得请教几个疑问：“这个变化的过程所需要的时间也是很快的”是远小于3秒？就我们目前的这个激光器条件在腔的结构（总腔长、晶体到两腔镜的距离）上怎么改进它才能有更好的激光输出呢？还有一个重要问题你们在模拟是有多少的点泵浦功率转化成晶体的热功耗从而产生热透镜效应呢这个好像是我们问题的关键所在？现在最大的问题是我的理论计算和实际得到的激光质量有很大出入啊。多指教。</div> <div class="postmsg"><i class="pstatus"> 本帖最后由 dabaorabbit 于 2011-10-21 10:52 编辑 </i><br /> <br /> 过期贴</div> <div class="postmsg">谢谢了。”让机床延迟3秒在运动“目前用的就是这个方法了。看来这个问题的答案就是这样了，必须有这个延时的时间。关于热焦距测量曾经做过He-Ne法，但是测过的很不准，一个很大功率和一个较小功率的热焦距相差几厘米，感觉很不准。对于光束质量我们也没有好的方法来解决啊，有一个物科的光束质量分析仪还没有M2分析的功能，很头疼。我们根据焊接的情况来评价光束模式，靠经验。不明白的是你的回复中的热焦距和光束质量的关系曲线是由哪些参数计算出来的呢？</div> <div class="postmsg"><i class="pstatus"> 本帖最后由 dabaorabbit 于 2011-10-21 10:53 编辑 </i><br /> <br /> 过期贴<br /> </div> <div class="postmsg"><div class="quote"><blockquote>原帖由 <i>liubosars</i> 于 2008-10-27 18:46 发表 <a href="http://bbs.oecr.com/redirect.php?goto=findpost&pid=490321&ptid=76864" target="_blank"><img id="aimg_ExaC5" onclick="zoom(this, this.src, 0, 0, 0)" class="zoom" src="static/image/common/back.gif" onmouseover="img_onmouseoverfunc(this)" onload="thumbImg(this)" border="0" alt="" /></a><br /> 还需要一些参数才能模拟腔的情况及稳区与非稳区的情况，<br /> 腔的情况（总腔长、晶体到两腔镜的距离）和具体的晶体的掺杂情况（确定晶体的屈光度）是否测定过热焦距？以及多大的泵浦功率？ </blockquote></div><br /> <br /> <br /> <br /> 哈哈哈...你小子~~~</div> <div style="height200px;"></div> </div> </div> </div> </div></div> </div> <!--autocomment filter by maxnum--> <div class="ft_wp"> <div id="ft" class=" cl"> <div id="flk" > <p> <a href="http://wpa.qq.com/msgrd?V=3&Uin=20600600&Site=光电工程师社区&Menu=yes&from=discuz" target="_blank" title="QQ"><img src="static/image/common/site_qq.jpg" alt="QQ" /></a><span class="pipe">|</span><a href="http://m.oecr.com" >手机版</a><span class="pipe">|</span><a href="http://so.oecr.com" title="站内搜索" target="_blank" >搜索</a><span class="pipe">|</span><a href="http://www.focaloptics.com" title="主办单位：武汉焦点光学技术有限公司" target="_blank" >焦点光学</a><span class="pipe">|</span><a href="http://www.oecr.com" target="_blank">光电工程师社区</a> ( <a href="http://beian.miit.gov.cn/" target="_blank">鄂ICP备17021725号-1</a> <a href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=42011102000821" target="_blank">鄂网安备42011102000821号</a> ) <span id="tcss"></span><script type="text/javascript" src="http://tcss.qq.com/ping.js?v=1eOg" charset="utf-8"></script><script type="text/javascript" reload="1">pgvMain({"discuzParams":{"r2":"1028778","ui":0,"rt":"plugin","pn":1,"qq":"000"},"extraParams":""});</script></p> <p class="xs0"> <span id="debuginfo"> Copyright 2015 光电工程师社区 版权所有 All Rights Reserved. </span> </p> </div> <div id="ftl" > <p>申明：本站为非盈利性公益个人网站，已关闭注册功能，本站所有内容均为网络收集整理，不代表本站立场。如您对某些内容有质疑或不快，请及时联系我们处理！ </p> </div> <div id="frt" > <div class="wp"> <p class="dd01"> © 2001-2022 <a href="http://www.oecr.com" target="_blank">光电工程师社区</a> 网站备案号：<a href="https://beian.miit.gov.cn/">鄂ICP备17021725号</a> 网站公安备案号：<a href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=42011102000821">鄂42011102000821号</a> Powered by <a href="http://www.discuz.net" target="_blank">Discuz!</a> <em>X3.2</em> </p><p class="dd02">GMT+8, 2025-12-23 23:41 </p> </div> </div></div> </div> </div> <!--bottombg结束--> <script src="home.php?mod=misc&ac=sendmail&rand=1766504519" type="text/javascript"></script> <!--<div id="scrolltop"> <span hidefocus="true"><a title="返回顶部" onclick="window.scrollTo('0','0')" class="scrolltopa" ><b>返回顶部</b></a></span> </div> --> <div id="scrolltop"> <span hidefocus="true"><a title="返回顶部" onclick="window.scrollTo('0','0')" class="scrolltopa" ><b>返回顶部</b></a></span> </div> <script type="text/javascript">_attachEvent(window, 'scroll', function () { showTopLink(); });checkBlind();</script> <div id="discuz_tips" style="display:none;"></div> <script type="text/javascript"> var tipsinfo = '1028778|X3.2|0.6||0||0|7|1766504519|b0922508b05d6a5a8fcbd9736ae30ba3|2'; </script> <script src="http://discuz.gtimg.cn/cloud/scripts/discuz_tips.js?v=1" type="text/javascript" charset="UTF-8"></script></body></html>