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class="authi"><a href="http://club.oecr.com/space-uid-14339.html" target="_blank" class="xw1" style="color: #FFCCCC">zhuangxinwei</a> </div> </div> <div class="p_pop blk bui card_gender_" id="userinfo327826" style="display: none; margin-top: -11px;"> <div class="m z"> <div id="userinfo327826_ma"></div> </div> <div class="i y"> <div> <strong><a href="http://club.oecr.com/space-uid-14339.html" target="_blank" class="xi2" style="color: #FFCCCC">zhuangxinwei</a></strong> <em>当前离线</em> </div><dl class="cl"> <dt>积分</dt><dd><a href="http://club.oecr.com/home.php?mod=space&uid=14339&do=profile" target="_blank" class="xi2">436</a></dd> </dl><div class="imicn"> <a href="http://club.oecr.com/home.php?mod=space&uid=14339&do=profile" target="_blank" title="查看详细资料"><img src="static/image/common/userinfo.gif" alt="查看详细资料" /></a> <a href="http://club.oecr.com/home.php?mod=magic&mid=showip&idtype=user&id=zhuangxinwei" id="a_showip_li_327826" class="xi2" onclick="showWindow(this.id, this.href)"><img src="static//image/magic/showip.small.gif" alt="" /> IP卡</a> <a href="http://club.oecr.com/home.php?mod=magic&mid=checkonline&idtype=user&id=zhuangxinwei" id="a_repent_327826" class="xi2" onclick="showWindow(this.id, this.href)"><img src="static//image/magic/checkonline.small.gif" alt="" /> 狗仔卡</a> </div> <div id="avatarfeed"><span id="threadsortswait"></span></div> </div> </div> <div> <div class="avatar"><a href="http://club.oecr.com/space-uid-14339.html" class="avtm" target="_blank"><img src="http://www.oecr.com/uc_server/avatar.php?uid=14339&size=middle" /></a></div> </div> </div> </td> <td class="plc"> <div class="pi"> <div id="fj" class="y"> <label class="z">电梯直达</label> <input type="text" class="px p_fre z" size="2" onkeyup="$('fj_btn').href='forum.php?mod=redirect&ptid=50727&authorid=0&postno='+this.value" onkeydown="if(event.keyCode==13) {window.location=$('fj_btn').href;return false;}" title="跳转到指定楼层" /> <a href="javascript:;" id="fj_btn" class="z" title="跳转到指定楼层"><img src="static/image/common/fj_btn.png" alt="跳转到指定楼层" class="vm" /></a> </div> <strong> <a href="http://bbs.oecr.com/thread-50727-1-1.html" id="postnum327826" onclick="setCopy(this.href, '帖子地址复制成功');return false;"> <em>1</em>楼</a> </strong> <div class="pti"> <div class="pdbt"> </div> <div class="authi"> <img class="authicn vm" id="authicon327826" src="static/image/common/online_member.gif" /> <em id="authorposton327826">发表于 2006-11-30 06:19:00</em> <span class="pipe">|</span> <a href="http://bbs.oecr.com/forum.php?mod=viewthread&tid=50727&page=1&authorid=14339" rel="nofollow">只看该作者</a> <span class="none"><img src="static/image/common/arw_r.gif" class="vm" alt="回帖奖励" /></span> <span class="pipe show">|</span><a href="http://bbs.oecr.com/forum.php?mod=viewthread&tid=50727&extra=page%3D1&ordertype=1" class="show">倒序浏览</a> <span class="pipe show">|</span><a href="javascript:;" onclick="readmode($('thread_subject').innerHTML, 327826);" class="show">阅读模式</a> </div> </div> </div><div class="pct"><style type="text/css">.pcb{margin-right:0}</style><div class="pcb"> <div class="t_fsz"> <table cellspacing="0" cellpadding="0"><tr><td class="t_f" id="postmessage_327826"> <p>我有台lightwave的<a href="http://laser.oecr.com" target="_blank" class="relatedlink">激光</a>器，型号是LWE221，有天拆了来看，里面的结构真是复杂，有个器件的作用不是很明白！希望各位大虾告知一二！那个器件上标的是crystal technology，上网查了一下，是个声光器件，是放在腔外的，但是不知道是做什么用的，调制哪个方面的！</p><p> </p></td></tr></table> </div> <div id="comment_327826" class="cm"> </div> <div id="post_rate_div_327826"></div> </div> </div> </td></tr> <tr><td class="plc plm"> <div id="p_btn" class="mtw mbm hm cl"> <a href="http://club.oecr.com/home.php?mod=spacecp&ac=favorite&type=thread&id=50727&formhash=7936f98a" id="k_favorite" onclick="showWindow(this.id, this.href, 'get', 0);" onmouseover="this.title = $('favoritenumber').innerHTML + ' 人收藏'" title="收藏本帖"><i><img src="static/image/common/fav.gif" alt="收藏" />收藏<span id="favoritenumber" style="display:none">0</span></i></a> <a class="followp" 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</td> </tr> </table> </div><div class="postaaa posta1" id="post_327980" ><table id="pid327980" class="plhin" summary="pid327980" cellspacing="0" cellpadding="0"> <tr> <td class="pls" rowspan="2"> <div id="favatar327980" class="pls favatar"> <div class="pi"> <div class="authi"><a href="http://club.oecr.com/space-uid-11256.html" target="_blank" class="xw1" style="color: #FF99FF">用户注册163</a> </div> </div> <div class="p_pop blk bui card_gender_" id="userinfo327980" style="display: none; margin-top: -11px;"> <div class="m z"> <div id="userinfo327980_ma"></div> </div> <div class="i y"> <div> <strong><a href="http://club.oecr.com/space-uid-11256.html" target="_blank" class="xi2" style="color: #FF99FF">用户注册163</a></strong> <em>当前离线</em> </div><dl class="cl"> <dt>积分</dt><dd><a href="http://club.oecr.com/home.php?mod=space&uid=11256&do=profile" target="_blank" class="xi2">1592</a></dd> </dl><div class="imicn"> <a href="http://club.oecr.com/home.php?mod=space&uid=11256&do=profile" target="_blank" title="查看详细资料"><img src="static/image/common/userinfo.gif" alt="查看详细资料" /></a> <a href="http://club.oecr.com/home.php?mod=magic&mid=showip&idtype=user&id=%D3%C3%BB%A7%D7%A2%B2%E1163" id="a_showip_li_327980" class="xi2" onclick="showWindow(this.id, this.href)"><img src="static//image/magic/showip.small.gif" alt="" /> IP卡</a> <a href="http://club.oecr.com/home.php?mod=magic&mid=checkonline&idtype=user&id=%D3%C3%BB%A7%D7%A2%B2%E1163" id="a_repent_327980" class="xi2" onclick="showWindow(this.id, this.href)"><img src="static//image/magic/checkonline.small.gif" alt="" /> 狗仔卡</a> </div> <div id="avatarfeed"><span id="threadsortswait"></span></div> </div> </div> <div> <div class="avatar"><a href="http://club.oecr.com/space-uid-11256.html" class="avtm" target="_blank"><img src="http://www.oecr.com/uc_server/avatar.php?uid=11256&size=middle" /></a></div> </div> </div> </td> <td class="plc"> <div class="pi"> <strong> <a href="http://bbs.oecr.com/forum.php?mod=redirect&goto=findpost&ptid=50727&pid=327980" id="postnum327980" onclick="setCopy(this.href, '帖子地址复制成功');return false;"> <em>2</em>楼</a> </strong> <div class="pti"> <div class="pdbt"> </div> <div class="authi"> <img class="authicn vm" id="authicon327980" src="static/image/common/online_member.gif" /> <em id="authorposton327980">发表于 2006-12-2 01:05:00</em> <span class="pipe">|</span> <a href="http://bbs.oecr.com/forum.php?mod=viewthread&tid=50727&page=1&authorid=11256" rel="nofollow">只看该作者</a> </div> </div> </div><div class="pct"><div class="pcb"> <div class="t_fsz"> <table cellspacing="0" cellpadding="0"><tr><td class="t_f" id="postmessage_327980"> 弄个图片上来看看再说 <img src="static/image/smiley/default/em07.gif" smilieid="36" border="0" alt="" /></td></tr></table> </div> <div id="comment_327980" class="cm"> </div> <div id="post_rate_div_327980"></div> </div> </div> </td></tr> <tr><td class="plc plm"> </td> </tr> <tr id="_postposition327980"></tr> <tr> <td class="pls"></td> <td class="plc" style="overflow:visible;"> <div class="po hin"> <div class="pob cl"> <em> <a class="fastre" href="forum.php?mod=post&action=reply&fid=7&tid=50727&repquote=327980&extra=page%3D1&page=1" onclick="showWindow('reply', this.href)">回复</a> <a class="replyadd" href="forum.php?mod=misc&action=postreview&do=support&tid=50727&pid=327980&hash=7936f98a" onclick="showWindow('login', this.href)" onmouseover="this.title = ($('review_support_327980').innerHTML ? $('review_support_327980').innerHTML : 0) + ' 人 支持'">支持 <span id="review_support_327980"></span></a> <a class="replysubtract" href="forum.php?mod=misc&action=postreview&do=against&tid=50727&pid=327980&hash=7936f98a" onclick="showWindow('login', this.href)" onmouseover="this.title = ($('review_against_327980').innerHTML ? $('review_against_327980').innerHTML : 0) + ' 人 反对'">反对 <span id="review_against_327980"></span></a> </em> <p> <a href="javascript:;" id="mgc_post_327980" onmouseover="showMenu(this.id)" class="showmenu">使用道具</a> <a href="javascript:;" onclick="showWindow('miscreport327980', 'misc.php?mod=report&rtype=post&rid=327980&tid=50727&fid=7', 'get', -1);return false;">举报</a> </p> <ul id="mgc_post_327980_menu" class="p_pop mgcmn" style="display: none;"> <li><a href="http://club.oecr.com/home.php?mod=magic&mid=namepost&idtype=pid&id=327980:50727" id="a_namepost_327980" onclick="showWindow(this.id, this.href)"><img src="static/image/magic/namepost.small.gif" />显身卡</a><li> </ul> <script type="text/javascript" reload="1">checkmgcmn('post_327980')</script> </div> </div> </td> </tr> <tr class="ad"> <td class="pls"> </td> <td class="plc"> </td> </tr> </table> </div><div class="postaaa posta2" id="post_328211" ><table id="pid328211" class="plhin" summary="pid328211" cellspacing="0" cellpadding="0"> <tr> <td class="pls" rowspan="2"> <div id="favatar328211" class="pls favatar"> <div class="pi"> <div class="authi"><a href="http://club.oecr.com/space-uid-51311.html" target="_blank" class="xw1" style="color: #003366">luchongbo</a> </div> </div> <div class="p_pop blk bui card_gender_" id="userinfo328211" style="display: none; margin-top: -11px;"> <div class="m z"> <div id="userinfo328211_ma"></div> </div> <div class="i y"> <div> <strong><a href="http://club.oecr.com/space-uid-51311.html" target="_blank" class="xi2" style="color: #003366">luchongbo</a></strong> <em>当前离线</em> </div><dl class="cl"> <dt>积分</dt><dd><a href="http://club.oecr.com/home.php?mod=space&uid=51311&do=profile" target="_blank" class="xi2">178</a></dd> </dl><div class="imicn"> <a href="http://club.oecr.com/home.php?mod=space&uid=51311&do=profile" target="_blank" title="查看详细资料"><img src="static/image/common/userinfo.gif" alt="查看详细资料" /></a> <a href="http://club.oecr.com/home.php?mod=magic&mid=showip&idtype=user&id=luchongbo" id="a_showip_li_328211" class="xi2" onclick="showWindow(this.id, this.href)"><img src="static//image/magic/showip.small.gif" alt="" /> IP卡</a> <a href="http://club.oecr.com/home.php?mod=magic&mid=checkonline&idtype=user&id=luchongbo" id="a_repent_328211" class="xi2" onclick="showWindow(this.id, this.href)"><img src="static//image/magic/checkonline.small.gif" alt="" /> 狗仔卡</a> </div> <div id="avatarfeed"><span id="threadsortswait"></span></div> </div> </div> <div> <div class="avatar"><a href="http://club.oecr.com/space-uid-51311.html" class="avtm" target="_blank"><img src="http://www.oecr.com/uc_server/avatar.php?uid=51311&size=middle" /></a></div> </div> </div> </td> <td class="plc"> <div class="pi"> <strong> <a href="http://bbs.oecr.com/forum.php?mod=redirect&goto=findpost&ptid=50727&pid=328211" id="postnum328211" onclick="setCopy(this.href, '帖子地址复制成功');return false;"> <em>3</em>楼</a> </strong> <div class="pti"> <div class="pdbt"> </div> <div class="authi"> <img class="authicn vm" id="authicon328211" src="static/image/common/online_member.gif" /> <em id="authorposton328211">发表于 2006-12-6 01:31:00</em> <span class="pipe">|</span> <a href="http://bbs.oecr.com/forum.php?mod=viewthread&tid=50727&page=1&authorid=51311" rel="nofollow">只看该作者</a> </div> </div> </div><div class="pct"><div class="pcb"> <div class="t_fsz"> <table cellspacing="0" cellpadding="0"><tr><td class="t_f" id="postmessage_328211"> <p class="MsoBodyTextIndent" style="MARGIN: auto 0cm; TEXT-INDENT: 23.65pt;"><font face="宋体">当声波在某些介质中传播时，会随时间与空间的周期性的弹性应变，造成介质密度（或光折射率）的周期变化。介质随超声应变与折射率变化的这一特性，可使光在介质中传播时发生衍射，从而产生声光效应：存在于超声波中的此类介质可视为一种由声波形成的位相光栅（称为声光栅），其光栅的栅距（光栅常数）即为声波波长。当一束平行光束通过声光介质时，光波就会被该声光栅所衍射而改变光的传播方向，并使光强在空间作重新分布。使它的光路分别在<span lang="EN-US">0</span>级，<span lang="EN-US">+1</span>级、<span lang="EN-US">-1</span>级上！声光衍射主要分为布拉格（<span lang="EN-US">Bragg</span>）衍射和喇曼<span lang="EN-US">-</span>奈斯（<span lang="EN-US">Raman-Nath</span>）衍射两种类型。前者通常声频较高，声光作用程较长；后者则反之。由于布拉格衍射效率较高，故一般声光器件主要工作在仅出现一级光（<span lang="EN-US">N=1</span>）的布拉格区。这样使光的光子溢出了腔外，这样使之不能达到阈值，不满足激光输出的条件，所以腔内就会有更多原子被泵捕到高能级上，增加离子数反转。当离子数达到最大值的时候，在调节声光介质使它的光在<span lang="EN-US">0</span>级上，这时溢出的光子减少，阈值降低，就满足激光的输出条件。就有很多的受激辐射的光子输出，就产生了脉冲激光。这时的能量远远大于没有通过调<span lang="EN-US">Q</span>技术的能量。所以你的激光器是声光调<span lang="EN-US">Q</span>技术的激光器。</font></p><p class="MsoBodyTextIndent" style="MARGIN: auto 0cm; TEXT-INDENT: 23.65pt;"><font face="宋体">声光调<span lang="EN-US">Q</span>激光器有的用行波调<span lang="EN-US">Q</span>的和用驻波调<span lang="EN-US">Q</span>。驻波会反弹，会影响激光的连系周期。</font></p><p class="MsoBodyTextIndent" style="MARGIN: auto 0cm; TEXT-INDENT: 23.65pt;"><font face="宋体">还有很多知识没有说到，就大体的给你说哈。<span lang="EN-US" style="FONT-SIZE: 10pt; COLOR: #2a4286; FONT-FAMILY: Verdana;"><p></p></span></font></p></td></tr></table> </div> <div id="comment_328211" class="cm"> </div> <div id="post_rate_div_328211"></div> </div> </div> </td></tr> <tr><td class="plc plm"> </td> </tr> <tr id="_postposition328211"></tr> <tr> <td class="pls"></td> <td class="plc" style="overflow:visible;"> <div class="po hin"> <div class="pob cl"> <em> <a class="fastre" href="forum.php?mod=post&action=reply&fid=7&tid=50727&repquote=328211&extra=page%3D1&page=1" onclick="showWindow('reply', this.href)">回复</a> <a class="replyadd" href="forum.php?mod=misc&action=postreview&do=support&tid=50727&pid=328211&hash=7936f98a" onclick="showWindow('login', this.href)" onmouseover="this.title = ($('review_support_328211').innerHTML ? $('review_support_328211').innerHTML : 0) + ' 人 支持'">支持 <span id="review_support_328211"></span></a> <a class="replysubtract" href="forum.php?mod=misc&action=postreview&do=against&tid=50727&pid=328211&hash=7936f98a" onclick="showWindow('login', this.href)" onmouseover="this.title = ($('review_against_328211').innerHTML ? $('review_against_328211').innerHTML : 0) + ' 人 反对'">反对 <span id="review_against_328211"></span></a> </em> <p> <a href="javascript:;" id="mgc_post_328211" onmouseover="showMenu(this.id)" class="showmenu">使用道具</a> <a href="javascript:;" onclick="showWindow('miscreport328211', 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card_gender_" id="userinfo328221" style="display: none; margin-top: -11px;"> <div class="m z"> <div id="userinfo328221_ma"></div> </div> <div class="i y"> <div> <strong><a href="http://club.oecr.com/space-uid-18999.html" target="_blank" class="xi2" style="color: #FF00CC">kkkyt</a></strong> <em>当前离线</em> </div><dl class="cl"> <dt>积分</dt><dd><a href="http://club.oecr.com/home.php?mod=space&uid=18999&do=profile" target="_blank" class="xi2">4846</a></dd> </dl><div class="imicn"> <a href="http://club.oecr.com/home.php?mod=space&uid=18999&do=profile" target="_blank" title="查看详细资料"><img src="static/image/common/userinfo.gif" alt="查看详细资料" /></a> <a href="http://club.oecr.com/home.php?mod=magic&mid=showip&idtype=user&id=kkkyt" id="a_showip_li_328221" class="xi2" onclick="showWindow(this.id, this.href)"><img src="static//image/magic/showip.small.gif" alt="" /> IP卡</a> <a href="http://club.oecr.com/home.php?mod=magic&mid=checkonline&idtype=user&id=kkkyt" id="a_repent_328221" class="xi2" onclick="showWindow(this.id, this.href)"><img src="static//image/magic/checkonline.small.gif" alt="" /> 狗仔卡</a> </div> <div id="avatarfeed"><span id="threadsortswait"></span></div> </div> </div> <div> <div class="avatar"><a href="http://club.oecr.com/space-uid-18999.html" class="avtm" target="_blank"><img src="http://www.oecr.com/uc_server/avatar.php?uid=18999&size=middle" /></a></div> </div> </div> </td> <td class="plc"> <div class="pi"> <strong> <a href="http://bbs.oecr.com/forum.php?mod=redirect&goto=findpost&ptid=50727&pid=328221" id="postnum328221" onclick="setCopy(this.href, '帖子地址复制成功');return false;"> <em>4</em>楼</a> </strong> <div class="pti"> <div class="pdbt"> </div> <div class="authi"> <img class="authicn vm" id="authicon328221" src="static/image/common/online_member.gif" /> <em id="authorposton328221">发表于 2006-12-6 03:48:00</em> <span class="pipe">|</span> <a href="http://bbs.oecr.com/forum.php?mod=viewthread&tid=50727&page=1&authorid=18999" rel="nofollow">只看该作者</a> </div> </div> </div><div class="pct"><div class="pcb"> <div class="t_fsz"> <table cellspacing="0" cellpadding="0"><tr><td class="t_f" id="postmessage_328221"> 是个声光器件，是放在腔外的，但是不知道是做什么用的，调制哪个方面的！<p> 是放在腔外的啊。。。</p></td></tr></table> </div> <div id="comment_328221" class="cm"> </div> <div id="post_rate_div_328221"></div> </div> </div> </td></tr> <tr><td class="plc plm"> </td> </tr> <tr id="_postposition328221"></tr> <tr> <td class="pls"></td> <td class="plc" style="overflow:visible;"> <div class="po hin"> <div class="pob cl"> <em> <a class="fastre" href="forum.php?mod=post&action=reply&fid=7&tid=50727&repquote=328221&extra=page%3D1&page=1" onclick="showWindow('reply', this.href)">回复</a> <a class="replyadd" href="forum.php?mod=misc&action=postreview&do=support&tid=50727&pid=328221&hash=7936f98a" onclick="showWindow('login', this.href)" onmouseover="this.title = ($('review_support_328221').innerHTML ? $('review_support_328221').innerHTML : 0) + ' 人 支持'">支持 <span 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target="_blank" class="xi2">455</a></dd> </dl><div class="imicn"> <a href="http://club.oecr.com/home.php?mod=space&uid=48337&do=profile" target="_blank" title="查看详细资料"><img src="static/image/common/userinfo.gif" alt="查看详细资料" /></a> <a href="http://club.oecr.com/home.php?mod=magic&mid=showip&idtype=user&id=roy_lz" id="a_showip_li_328582" class="xi2" onclick="showWindow(this.id, this.href)"><img src="static//image/magic/showip.small.gif" alt="" /> IP卡</a> <a href="http://club.oecr.com/home.php?mod=magic&mid=checkonline&idtype=user&id=roy_lz" id="a_repent_328582" class="xi2" onclick="showWindow(this.id, this.href)"><img src="static//image/magic/checkonline.small.gif" alt="" /> 狗仔卡</a> </div> <div id="avatarfeed"><span id="threadsortswait"></span></div> </div> </div> <div> <div class="avatar"><a href="http://club.oecr.com/space-uid-48337.html" class="avtm" target="_blank"><img src="http://www.oecr.com/uc_server/avatar.php?uid=48337&size=middle" /></a></div> </div> </div> </td> <td class="plc"> <div class="pi"> <strong> <a href="http://bbs.oecr.com/forum.php?mod=redirect&goto=findpost&ptid=50727&pid=328582" id="postnum328582" onclick="setCopy(this.href, '帖子地址复制成功');return false;"> <em>5</em>楼</a> </strong> <div class="pti"> <div class="pdbt"> </div> <div class="authi"> <img class="authicn vm" id="authicon328582" src="static/image/common/online_member.gif" /> <em id="authorposton328582">发表于 2006-12-12 01:22:00</em> <span class="pipe">|</span> <a href="http://bbs.oecr.com/forum.php?mod=viewthread&tid=50727&page=1&authorid=48337" rel="nofollow">只看该作者</a> </div> </div> </div><div class="pct"><div class="pcb"> <div class="t_fsz"> <table cellspacing="0" cellpadding="0"><tr><td class="t_f" id="postmessage_328582"> 放在腔外有什么特别？很多调制器都是外调制的<img src="static/image/smiley/default/em03.gif" smilieid="32" border="0" alt="" /></td></tr></table> </div> <div id="comment_328582" class="cm"> </div> <div id="post_rate_div_328582"></div> </div> </div> </td></tr> <tr><td class="plc plm"> 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