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href="forum.php?mod=misc&action=recommend&do=subtract&tid=248525&hash=86d22f16" 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-52359.html" target="_blank" class="xi2"><img src="http://www.oecr.com/uc_server/avatar.php?uid=52359&size=small" /></a> <span class="tit_author"> <a href="http://club.oecr.com/space-uid-52359.html">sar_liu</a> </span> </div> <div class="date"><span>发布时间:</span> 2011-12-28 10:40</div> <div class="album_info"> <h3>正文摘要: </h3> <p> 本帖最后由 sar_liu 于 2011-12-28 10:44 编辑 控制电源产生模拟调制信号，加在半导体808模块上，808模块输出泵浦光，泵浦YAG晶体出1053调制激光。 在激光输出前方，用光电感应器监测调制激光，连接示波器观测调 ...</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_963364" class="xld xlda mbm"><dl class="bbda cl"> <dd class="m avt"><a href="http://club.oecr.com/space-uid-83803.html"><img src="http://www.oecr.com/uc_server/avatar.php?uid=83803&size=small" /></a></dd> <dt> <span class="y xw0"> </span> <a href="http://club.oecr.com/space-uid-83803.html" target="_blank" class="xi2">弥勒</a><em id="author_963364"> 发表于</em> <span class="xg1 xw0">2011-12-30 09:48:37</span> </dt> <dd class="z"><div class="pcb"> <div class="t_fsz"> <table cellspacing="0" cellpadding="0"><tr><td class="t_f" id="postmessage_963364"> 还需要一些已知条件来帮助分析：1)LD上的电压波形，由于驱动电路本身的原因，取样电流不一定和流过LD的电流一模一样。2)808的光功率波形，确认808的光功率和电流波形是否基本吻合。3)光探头屏蔽，封闭感光口，确定没有受到电磁干扰。LD的电流瞬变，可能会引起AC-DC(开关电源)电磁辐射的变化。4)确定输出光功率中，已经对808进行了有效的滤除。</td></tr></table> </div> <div id="comment_963364" class="cm"> </div> <div id="post_rate_div_963364"></div> </div> </dd> </dl> </div> <div id="post_963225" 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_963225"> 发表于</em> <span class="xg1 xw0">2011-12-29 16:21:13</span> </dt> <dd class="z"><div class="pcb"> <div class="t_fsz"> <table cellspacing="0" cellpadding="0"><tr><td class="t_f" id="postmessage_963225"> 看不到图片。。不过。你测量错了吧。。个人认为。。。</td></tr></table> </div> <div id="comment_963225" class="cm"> </div> <div id="post_rate_div_963225"></div> </div> </dd> </dl> </div> <div id="post_963077" class="xld xlda mbm"><dl class="bbda cl"> <dd class="m avt"><a href="http://club.oecr.com/space-uid-68962.html"><img src="http://www.oecr.com/uc_server/avatar.php?uid=68962&size=small" /></a></dd> <dt> <span class="y xw0"> </span> <a href="http://club.oecr.com/space-uid-68962.html" target="_blank" class="xi2">matthewlas</a><em id="author_963077"> 发表于</em> <span class="xg1 xw0">2011-12-29 09:50:09</span> </dt> <dd class="z"><div class="pcb"> <div class="t_fsz"> <table cellspacing="0" cellpadding="0"><tr><td class="t_f" id="postmessage_963077"> 为什么信号是1K的，激光是214K的呢？另外是1053的输出吗？是不是类似于调Q，就是在泵浦抽运的最开始，上能级粒子还没有来得及向下跃迁，粒子向激发态转移依然以很快的速度继续，再到上能级，在经过一小段时间后，自发辐射开始，并且来回震荡形成激光。这时翻转粒子数应该是多于正常运转的，此时泵浦速率会稳定，翻转粒子数和激光输出都会趋于均值。这是我的理解。从这点考虑，可以尝试让激光器更容易震荡，即适当减小点损耗，增大输出耦合镜的反射率试试有没有有改善</td></tr></table> </div> <div id="comment_963077" class="cm"> <h3 class="psth xs1"><span class="icon_ring vm"></span>点评</h3> <div class="pstl xs1 cl"> <div class="psta vm"> <a href="http://club.oecr.com/space-uid-83803.html" c="1"><img src="http://www.oecr.com/uc_server/avatar.php?uid=83803&size=small" /></a> <a href="http://club.oecr.com/space-uid-83803.html" class="xi2 xw1">弥勒</a> </div> <div class="psti"> 光波形的频率应该是2K。周期是500uS。 <span class="xg1"> 发表于 2011-12-30 10:17</span> </div> </div> </div> <div id="post_rate_div_963077"></div> </div> </dd> </dl> </div> </div> </div> </div> <script type="text/javascript"> new lazyload(); </script> <div class="wp mtn"> <!--[diy=diy3]--><div id="diy3" class="area"></div><!--[/diy]--> </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 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