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'get', 0);" onmouseover="this.title = $('favoritenumber').innerHTML + ' 人收藏'">收藏 <span id="favoritenumber" class="xi1">1</span></a></div> </div> <div class="xg1 z"> <a id="albumback_sw" href="javascript:void(0);" onclick="changealbumback();">关灯</a> <span class="pipe">|</span> <span class="keyboard-tip">提示：支持键盘翻页<-左 右-></span> </div> <div class="xg1 y"><a href="http://bbs.oecr.com/thread-87807-1-1.html" class="thread_mod xg1"><span>帖子模式</span></a></div> </div> <div class="d"> <table cellpadding="0" cellspacing="0" width="100%"> <tr> <td width="780"> <div class="photo_pic"> <div id="photo_pic" style="position: relative; text-align: center;"> <img alt="" id="pic" style="max-width: 780px;_width: 780px;" src="data/attachment/forum/month_0905/090525165540c8c2f3121a906a.jpg"> </div> <div id="imagelist_nav"> <div class="imagelist_album"> <a id="goleft" class="left" onclick="imagelist_go('prev');" href="javascript:void(0);"></a> <div id="imagelistwarp" class="left"> <ul id="imagelistthumb" style="width: 110px; left: 0px;"><img src="static/image/common/loading.gif" width="16" height="16" class="vm" /> 组图打开中，请稍候......</ul> <a id="currentpic" class="mask" href="javascript:void(0)" style="left: 0px;"></a> </div> <a id="goright" class="right" onclick="imagelist_go('next');" href="javascript:void(0);"></a> </div> </div> </div> <script type="text/javascript" reload="1"> var imagewidth = 110; var curnum = 0; var imagecount = '1'; function imagelist_go(type) { var width = '110'; var left = parseInt($('imagelistthumb').style.left.substr(0, ($('imagelistthumb').style.left.length - 2))); var curleft = parseInt($('currentpic').style.left.substr(0, ($('imagelistthumb').style.left.length - 2))); if(type == 'next') { if(left > -(width - 730)) { newleft = imagewidth * 4; if(left - newleft < -(width - 730)) { newleft = width - 730 - left; } imagelist_scrolleft('imagelistthumb', left, newleft); imagelist_scrolleft('currentpic', curleft, newleft); } } else { if(left < 0) { newleft = imagewidth * 4; if(left + newleft > 0) { newleft = -left; } imagelist_scrolleft('imagelistthumb', left, newleft, 'add'); imagelist_scrolleft('currentpic', curleft, newleft, 'add'); } } } function imagelist_scrolleft(id, left, num, type) { if(type == 'add') { left += num; } else { left -= num; } $(id).style.left = left +'px'; } function current_pic(n) { curnum = n; var left = parseInt($('imagelistthumb').style.left.substr(0, ($('imagelistthumb').style.left.length - 2))); $('pic').src=imglist['url'][n]; var curleft = imagewidth * n; if(imagecount > 7 && n >= 4) { if(n < (imagecount - 4)) { curleft = imagewidth * 3; imagelist_scrolleft('imagelistthumb', 0, imagewidth * (n-3)); } else { curleft = imagewidth * (7 - (imagecount - n)); imagelist_scrolleft('imagelistthumb', 0, imagewidth * (imagecount-7)); } } else { imagelist_scrolleft('imagelistthumb', 0, 0); } $('currentpic').style.left = curleft+'px'; }var imagelistkey = 'eb76dcf329885b6a'; var imglist = new Array(); var imagelist_html = ''; imglist['aid'] = ['41782']; imglist['url'] = ['data/attachment/forum/month_0905/090525165540c8c2f3121a906a.jpg']; var count = imglist['aid'].length; for(i = 0; i < count; i++) { imagelist_html += '<li><div class="">' +'<img src="forum.php?mod=image&aid=' + imglist['aid'][i] + '&size=100x100&key=' + imagelistkey + '&atid=87807" width="100" height="100" onclick="current_pic('+i+');"/><span>'+(i+1)+'/'+count+'</span></div></li>'; } $('imagelistthumb').innerHTML = imagelist_html; function createElem(e){ var obj = document.createElement(e); obj.style.position = 'absolute'; obj.style.zIndex = '1'; obj.style.cursor = 'pointer'; obj.onmouseout = function(){ this.style.background = 'none';} return obj; } function viewPhoto(){ var divappend = 0; if(!$('pic-prev')) { var pager = createElem('div'); var pre = createElem('div'); var next = createElem('div'); pager.id='pager'; pre.id='pic-prev'; next.id='pic-next'; divappend = 1; } else { var pager = $('pager'); var pre = $('pic-prev'); var next = $('pic-next'); } var cont = $('photo_pic'); var tar = $('pic'); var w = 390; var objpos = fetchOffset(tar); pager.style.position = 'absolute'; pager.style.left = '0px'; pager.style.top = '0px'; pager.style.width = '780px'; pager.style.height = tar.height + 'px'; pre.style.left = 0; next.style.right = 0; pre.style.width = next.style.width = w + 'px'; pre.style.height = next.style.height = tar.height + 'px'; pre.innerHTML = next.innerHTML = '<img src="static/image/common/emp.gif" width="' + w + '" height="' + tar.height + '" />'; pre.onmouseover = function(){ this.style.background = 'url(static/image/common/pic-prev.png) no-repeat 0 50%'; } pre.onclick = function(){if(curnum>=1) {$('pic').src=imglist['url'][curnum-1];current_pic(curnum-1);}} pre.title = ''; next.onmouseover = function(){ this.style.background = 'url(static/image/common/pic-next.png) no-repeat 100% 50%'; } next.onclick = function(){if(curnum < imagecount - 1) {$('pic').src=imglist['url'][curnum+1];current_pic(curnum+1);}} next.title = ''; //cont.style.position = 'relative'; if(divappend == 1) { cont.appendChild(pager); pager.appendChild(pre); pager.appendChild(next); } } var onopen = 0; $('pic').onload = function(){ viewPhoto(); if(onopen == 0) { onopen = 1; } else { var imagepos = fetchOffset($('photo_pic')); document.documentElement.scrollTop = imagepos['top']; } } document.onkeyup = function(e){ e = e ? e : window.event; var tagname = BROWSER.ie ? e.srcElement.tagName : e.target.tagName; if(tagname == 'INPUT' || tagname == 'TEXTAREA') return; actualCode = e.keyCode ? e.keyCode : e.charCode; if(actualCode == 39) { $('pic-next').click(); } if(actualCode == 37) { $('pic-prev').click(); } } </script> <div id="p_btn" class="mtw mbm cl xs1" style="display:none;"> <a href="http://club.oecr.com/home.php?mod=spacecp&ac=share&type=thread&id=87807" id="k_share" onclick="showWindow(this.id, this.href, 'get', 0);" onmouseover="this.title = $('sharenumber').innerHTML + ' 人分享'"><i><img src="static/image/common/oshr.png" alt="分享" />分享<span id="sharenumber">0</span></i></a> <a href="http://club.oecr.com/home.php?mod=spacecp&ac=favorite&type=thread&id=87807" id="k_favorite" onclick="showWindow(this.id, this.href, 'get', 0);" onmouseover="this.title = $('favoritenumber').innerHTML + ' 人收藏'"><i><img src="static/image/common/fav.gif" alt="收藏" />收藏<span id="favoritenumber">1</span></i></a> <a id="recommend_add" href="forum.php?mod=misc&action=recommend&do=add&tid=87807&hash=a36db2e2" onclick="showWindow('login', this.href)" onmouseover="this.title = $('recommendv_add').innerHTML + ' 人支持'"><i><img src="static/image/common/rec_add.gif" alt="支持" />支持<span id="recommendv_add">0</span></i></a> <a id="recommend_subtract" href="forum.php?mod=misc&action=recommend&do=subtract&tid=87807&hash=a36db2e2" onclick="showWindow('login', this.href)" onmouseover="this.title = $('recommendv_subtract').innerHTML + ' 人反对'"><i><img src="static/image/common/rec_subtract.gif" alt="反对" />反对<span id="recommendv_subtract">0</span></i></a> </div> </td> <td valign="top" class="album_side_r"> <div class="album_side"> <div class="hm mtn mbn"> <a href="http://club.oecr.com/space-uid-36680.html" target="_blank" class="xi2"><img src="http://www.oecr.com/uc_server/avatar.php?uid=36680&size=small" /></a> <span class="tit_author"> <a href="http://club.oecr.com/space-uid-36680.html">guitian</a> </span> </div> <div class="date"><span>发布时间:</span> 2009-5-25 16:55</div> <div class="album_info"> <h3>正文摘要: </h3> <p>最近碰到一个问题： 激光经过扩束镜后，脉冲尖峰被削去。大家帮忙分析一下什么原因。 脉冲波形见附件。</p> </div> </div> </td> </tr> </table> </div> </div> <div class="bm vw pl" id="comment"> <div class="bm_h cl"> <h2>回复</h2> </div> <div class="bm_c"> <div id="postlistreply" class="xld xlda mbm"><div id="post_new" class="viewthread_table" style="display: none"></div></div><div id="post_629306" class="xld xlda mbm"><dl class="bbda cl"> <dd class="m avt"><a href="http://club.oecr.com/space-uid-105476.html"><img src="http://www.oecr.com/uc_server/avatar.php?uid=105476&size=small" /></a></dd> <dt> <span class="y xw0"> </span> <a href="http://club.oecr.com/space-uid-105476.html" target="_blank" class="xi2">zrsheng</a><em id="author_629306"> 发表于</em> <span class="xg1 xw0">2010-2-20 22:28:45</span> </dt> <dd class="z"><div class="pcb"> <div class="t_fsz"> <table cellspacing="0" cellpadding="0"><tr><td class="t_f" id="postmessage_629306"> 为何减分经过扩束镜片后会被削去呢</td></tr></table> </div> <div id="comment_629306" class="cm"> </div> <div id="post_rate_div_629306"></div> </div> </dd> </dl> </div> <div id="post_628462" class="xld xlda mbm"><dl class="bbda cl"> <dd class="m avt"><a href="http://club.oecr.com/space-uid-94474.html"><img src="http://www.oecr.com/uc_server/avatar.php?uid=94474&size=small" /></a></dd> <dt> <span class="y xw0"> </span> <a href="http://club.oecr.com/space-uid-94474.html" target="_blank" class="xi2">d.fly.liu</a><em id="author_628462"> 发表于</em> <span class="xg1 xw0">2010-2-9 12:00:05</span> </dt> <dd class="z"><div class="pcb"> <div class="t_fsz"> <table cellspacing="0" cellpadding="0"><tr><td class="t_f" id="postmessage_628462"> 。。。。。。。。。。。。。。。。。。。。。。。</td></tr></table> </div> <div id="comment_628462" class="cm"> </div> <div id="post_rate_div_628462"></div> </div> </dd> </dl> </div> <div id="post_628356" class="xld xlda mbm"><dl class="bbda cl"> <dd class="m avt"><a href="http://club.oecr.com/space-uid-75720.html"><img src="http://www.oecr.com/uc_server/avatar.php?uid=75720&size=small" /></a></dd> <dt> <span class="y xw0"> </span> <a href="http://club.oecr.com/space-uid-75720.html" target="_blank" class="xi2">dabaorabbit</a><em id="author_628356"> 发表于</em> <span class="xg1 xw0">2010-2-8 15:49:14</span> </dt> <dd class="z"><div class="pcb"> <div class="t_fsz"> <table cellspacing="0" cellpadding="0"><tr><td class="t_f" id="postmessage_628356"> 楼主的问题解决了没啊，怎么也没消息了？我还有个问题：正常的脉冲经过单个透镜后的波形分布是什么样的？</td></tr></table> </div> <div id="comment_628356" class="cm"> </div> <div id="post_rate_div_628356"></div> </div> </dd> </dl> </div> <div id="post_628297" class="xld xlda mbm"><dl class="bbda cl"> <dd class="m avt"><a href="http://club.oecr.com/space-uid-18999.html"><img src="http://www.oecr.com/uc_server/avatar.php?uid=18999&size=small" /></a></dd> <dt> <span class="y xw0"> </span> <a href="http://club.oecr.com/space-uid-18999.html" target="_blank" class="xi2">kkkyt</a><em id="author_628297"> 发表于</em> <span class="xg1 xw0">2010-2-8 10:01:46</span> </dt> <dd class="z"><div class="pcb"> <div class="t_fsz"> <table cellspacing="0" cellpadding="0"><tr><td class="t_f" id="postmessage_628297"> 是不是有红外的干扰。或着你的括束系统带来的，换过括束镜试过没有。？</td></tr></table> </div> <div id="comment_628297" class="cm"> </div> <div id="post_rate_div_628297"></div> </div> </dd> </dl> </div> <div id="post_628243" class="xld xlda mbm"><dl class="bbda cl"> <dd class="m avt"><a href="http://club.oecr.com/space-uid-67402.html"><img src="http://www.oecr.com/uc_server/avatar.php?uid=67402&size=small" /></a></dd> <dt> <span class="y xw0"> </span> <a href="http://club.oecr.com/space-uid-67402.html" target="_blank" class="xi2">Femtosecond</a><em id="author_628243"> 发表于</em> <span class="xg1 xw0">2010-2-7 20:08:52</span> </dt> <dd class="z"><div class="pcb"> <div class="t_fsz"> <table cellspacing="0" cellpadding="0"><tr><td class="t_f" id="postmessage_628243"> <i class="pstatus"> 本帖最后由 Femtosecond 于 2010-2-7 20:12 编辑 </i><br /> <div class="quote"><blockquote>我从信号分析的角度给你解答：<br /> <br /> 经过扩散镜后，高频信号被滤除，低频信号通过，显然造成低通效应。<br /> <br /> 信 ...<br /> <font size="2"><font color="#999999">bbsoecrcom 发表于 2009-6-3 16:44</font> <a href="http://bbs.oecr.com/redirect.php?goto=findpost&pid=560984&ptid=87807" target="_blank"><img id="aimg_kRVQA" onclick="zoom(this, this.src, 0, 0, 0)" class="zoom" file="static/image/common/back.gif" onmouseover="img_onmouseoverfunc(this)" lazyloadthumb="1" border="0" alt="" /></a></font></blockquote></div><br /> <br /> 奇思妙解，够幽默，够无厘头<br /> 乐死我了，呵呵</td></tr></table> </div> <div id="comment_628243" class="cm"> </div> <div id="post_rate_div_628243"></div> </div> </dd> </dl> <script type="text/javascript" reload="1"> aimgcount[628243] = ['kRVQA']; attachimggroup(628243); </script> </div> <div id="post_628201" class="xld xlda mbm"><dl class="bbda cl"> <dd class="m avt"><a href="http://club.oecr.com/space-uid-65058.html"><img src="http://www.oecr.com/uc_server/avatar.php?uid=65058&size=small" /></a></dd> <dt> <span class="y xw0"> </span> <a href="http://club.oecr.com/space-uid-65058.html" target="_blank" class="xi2">牛郎</a><em id="author_628201"> 发表于</em> <span class="xg1 xw0">2010-2-7 13:02:09</span> </dt> <dd class="z"><div class="pcb"> <div class="t_fsz"> <table cellspacing="0" cellpadding="0"><tr><td class="t_f" id="postmessage_628201"> 楼上工夫深,铁杵变成针.</td></tr></table> </div> <div id="comment_628201" class="cm"> </div> <div id="post_rate_div_628201"></div> </div> </dd> </dl> </div> <div id="post_594238" class="xld xlda mbm"><dl class="bbda cl"> <dd class="m avt"><a href="http://club.oecr.com/space-uid-13785.html"><img src="http://www.oecr.com/uc_server/avatar.php?uid=13785&size=small" /></a></dd> <dt> <span class="y xw0"> </span> <a href="http://club.oecr.com/space-uid-13785.html" target="_blank" class="xi2">qggq222</a><em id="author_594238"> 发表于</em> <span class="xg1 xw0">2009-9-17 10:37:23</span> </dt> <dd class="z"><div class="pcb"> <div class="t_fsz"> <table cellspacing="0" cellpadding="0"><tr><td class="t_f" id="postmessage_594238"> 100M示波器看15ns波形？还有这么多毛刺？先换一台高兆示波器，再检查一下你的探头响应时间吧。</td></tr></table> </div> <div id="comment_594238" class="cm"> </div> <div id="post_rate_div_594238"></div> </div> </dd> </dl> </div> <div id="post_562913" class="xld xlda mbm"><dl class="bbda cl"> <dd class="m avt"><a href="http://club.oecr.com/space-uid-32921.html"><img src="http://www.oecr.com/uc_server/avatar.php?uid=32921&size=small" /></a></dd> <dt> <span class="y xw0"> </span> <a href="http://club.oecr.com/space-uid-32921.html" target="_blank" class="xi2">syanzi</a><em id="author_562913"> 发表于</em> <span class="xg1 xw0">2009-6-9 15:42:49</span> </dt> <dd class="z"><div class="pcb"> <div class="t_fsz"> <table cellspacing="0" cellpadding="0"><tr><td class="t_f" id="postmessage_562913"> 建议测一下,光束质量,扩束前和扩束后的.比较一下,光束横截面强度在扩束前后有什么不同?</td></tr></table> </div> <div id="comment_562913" class="cm"> </div> <div id="post_rate_div_562913"></div> </div> </dd> </dl> </div> <div id="post_562009" class="xld xlda mbm"><dl class="bbda cl"> <dd class="m avt"><a href="http://club.oecr.com/space-uid-92189.html"><img src="http://www.oecr.com/uc_server/avatar.php?uid=92189&size=small" /></a></dd> <dt> <span class="y xw0"> </span> <a href="http://club.oecr.com/space-uid-92189.html" target="_blank" class="xi2">bbsoecrcom</a><em id="author_562009"> 发表于</em> <span class="xg1 xw0">2009-6-6 20:14:00</span> </dt> <dd class="z"><div class="pcb"> <div class="t_fsz"> <table cellspacing="0" cellpadding="0"><tr><td class="t_f" id="postmessage_562009"> 你回去好好把郑君里的《信号与系统》好好看看</td></tr></table> </div> <div id="comment_562009" class="cm"> </div> <div id="post_rate_div_562009"></div> </div> </dd> </dl> </div> <div id="post_561228" class="xld xlda mbm"><dl class="bbda cl"> <dd class="m avt"><a href="http://club.oecr.com/space-uid-62200.html"><img src="http://www.oecr.com/uc_server/avatar.php?uid=62200&size=small" /></a></dd> <dt> <span class="y xw0"> </span> <a href="http://club.oecr.com/space-uid-62200.html" target="_blank" class="xi2">EinsteinDirac</a><em id="author_561228"> 发表于</em> <span class="xg1 xw0">2009-6-4 10:25:36</span> </dt> <dd class="z"><div class="pcb"> <div class="t_fsz"> <table cellspacing="0" cellpadding="0"><tr><td class="t_f" id="postmessage_561228"> <strong> <a href="http://bbs.oecr.com/redirect.php?goto=findpost&pid=560984&ptid=87807" target="_blank">19#</a> <i>bbsoecrcom</i> </strong><br /> <br /> 你说的频率是空域的还是时域的？</td></tr></table> </div> <div id="comment_561228" class="cm"> </div> <div id="post_rate_div_561228"></div> </div> </dd> </dl> </div> <div id="post_561227" class="xld xlda mbm"><dl class="bbda cl"> <dd class="m avt"><a href="http://club.oecr.com/space-uid-62200.html"><img src="http://www.oecr.com/uc_server/avatar.php?uid=62200&size=small" /></a></dd> <dt> <span class="y xw0"> </span> <a href="http://club.oecr.com/space-uid-62200.html" target="_blank" class="xi2">EinsteinDirac</a><em id="author_561227"> 发表于</em> <span class="xg1 xw0">2009-6-4 10:24:49</span> </dt> <dd class="z"><div class="pcb"> <div class="t_fsz"> <table cellspacing="0" cellpadding="0"><tr><td class="t_f" id="postmessage_561227"> <strong> <a href="http://bbs.oecr.com/redirect.php?goto=findpost&pid=560984&ptid=87807" target="_blank">19#</a> <i>bbsoecrcom</i> </strong><br /> 为什么尖峰是高频？</td></tr></table> </div> <div id="comment_561227" 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