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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=89703" 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=89703" 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">0</span></i></a> <a id="recommend_add" href="forum.php?mod=misc&action=recommend&do=add&tid=89703&hash=9bc5f4cf" 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=89703&hash=9bc5f4cf" 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-57268.html" target="_blank" class="xi2"><img src="http://www.oecr.com/uc_server/avatar.php?uid=57268&size=small" /></a> <span class="tit_author"> <a href="http://club.oecr.com/space-uid-57268.html">constant</a> </span> </div> <div class="date"><span>发布时间:</span> 2009-7-10 10:04</div> <div class="album_info"> <h3>正文摘要: </h3> <p>我就读于北京工业大学激光工程研究院，从事超快激光器方面的研究，并且热衷于将先进的激光器迅速产品化。 看到别人在论坛里发的关于皮秒激光器的帖子，很不错。这次出差去长春，长春天文台的韩老师一 ...</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_1073551" class="xld xlda mbm"><dl class="bbda cl"> <dd class="m avt"><a href="http://club.oecr.com/space-uid-52025.html"><img src="http://www.oecr.com/uc_server/avatar.php?uid=52025&size=small" /></a></dd> <dt> <span class="y xw0"> </span> <a href="http://club.oecr.com/space-uid-52025.html" target="_blank" class="xi2">liubosars</a><em id="author_1073551"> 发表于</em> <span class="xg1 xw0">2013-4-12 01:39:45</span> </dt> <dd class="z"><div class="pcb"> <div class="t_fsz"> <table cellspacing="0" cellpadding="0"><tr><td class="t_f" id="postmessage_1073551"> 路过，看看</td></tr></table> </div> <div id="comment_1073551" class="cm"> </div> <div id="post_rate_div_1073551"></div> </div> </dd> </dl> </div> <div id="post_1057787" class="xld xlda mbm"><dl class="bbda cl"> <dd class="m avt"><a href="http://club.oecr.com/space-uid-131849.html"><img src="http://www.oecr.com/uc_server/avatar.php?uid=131849&size=small" /></a></dd> <dt> <span class="y xw0"> </span> <a href="http://club.oecr.com/space-uid-131849.html" target="_blank" class="xi2">smarter</a><em id="author_1057787"> 发表于</em> <span class="xg1 xw0">2013-1-4 16:49:38</span> </dt> <dd class="z"><div class="pcb"> <div class="t_fsz"> <table cellspacing="0" cellpadding="0"><tr><td class="t_f" id="postmessage_1057787"> 真正的技术贴</td></tr></table> </div> <div id="comment_1057787" class="cm"> </div> <div id="post_rate_div_1057787"></div> </div> </dd> </dl> </div> <div id="post_1057783" class="xld xlda mbm"><dl class="bbda cl"> <dd class="m avt"><a href="http://club.oecr.com/space-uid-145484.html"><img src="http://www.oecr.com/uc_server/avatar.php?uid=145484&size=small" /></a></dd> <dt> <span class="y xw0"> </span> <a href="http://club.oecr.com/space-uid-145484.html" target="_blank" class="xi2">光粒网-Kelly</a><em id="author_1057783"> 发表于</em> <span class="xg1 xw0">2013-1-4 16:30:56</span> </dt> <dd class="z"><div class="pcb"> <div class="t_fsz"> <table cellspacing="0" cellpadding="0"><tr><td class="t_f" id="postmessage_1057783"> <img src="static/image/smiley/Tiger/05.gif" smilieid="143" border="0" alt="" /></td></tr></table> </div> <div id="comment_1057783" class="cm"> </div> <div id="post_rate_div_1057783"></div> </div> </dd> </dl> </div> <div id="post_1057764" class="xld xlda mbm"><dl class="bbda cl"> <dd class="m avt"><a href="http://club.oecr.com/space-uid-23681.html"><img src="http://www.oecr.com/uc_server/avatar.php?uid=23681&size=small" /></a></dd> <dt> <span class="y xw0"> </span> <a href="http://club.oecr.com/space-uid-23681.html" target="_blank" class="xi2">nknight23</a><em id="author_1057764"> 发表于</em> <span class="xg1 xw0">2013-1-4 15:33:52</span> </dt> <dd class="z"><div class="pcb"> <div class="t_fsz"> <table cellspacing="0" cellpadding="0"><tr><td class="t_f" id="postmessage_1057764"> 这个好帖子不应该沉，顶到首页去，找起来方便</td></tr></table> </div> <div id="comment_1057764" class="cm"> </div> <div id="post_rate_div_1057764"></div> </div> </dd> </dl> </div> <div id="post_1020135" class="xld xlda mbm"><dl class="bbda cl"> <dd class="m avt"><a href="http://club.oecr.com/space-uid-47986.html"><img src="http://www.oecr.com/uc_server/avatar.php?uid=47986&size=small" /></a></dd> <dt> <span class="y xw0"> </span> <a href="http://club.oecr.com/space-uid-47986.html" target="_blank" class="xi2">shuttle001</a><em id="author_1020135"> 发表于</em> <span class="xg1 xw0">2012-6-29 14:12:25</span> </dt> <dd class="z"><div class="pcb"> <div class="t_fsz"> <table cellspacing="0" cellpadding="0"><tr><td class="t_f" id="postmessage_1020135"> 学了好多。帮楼主顶上去，让更多的人关注。</td></tr></table> </div> <div id="comment_1020135" class="cm"> </div> <div id="post_rate_div_1020135"></div> </div> </dd> </dl> </div> <div id="post_1019809" class="xld xlda mbm"><dl class="bbda cl"> <dd class="m avt"><a href="http://club.oecr.com/space-uid-57268.html"><img src="http://www.oecr.com/uc_server/avatar.php?uid=57268&size=small" /></a></dd> <dt> <span class="y xw0"> </span> <a href="http://club.oecr.com/space-uid-57268.html" target="_blank" class="xi2">constant</a><em id="author_1019809"> 发表于</em> <span class="xg1 xw0">2012-6-28 11:53:49</span> </dt> <dd class="z"><div class="pcb"> <div class="t_fsz"> <table cellspacing="0" cellpadding="0"><tr><td class="t_f" id="postmessage_1019809"> 几百kHz甚至几MHz的皮秒激光相对于1KHz左右的更广泛，以激光精细加工为例，我师弟Goldenld做过详细的皮秒激光加工的调研和实验，结果显示，过高的单脉冲能量(mJ)不利于提高加工精度。相对于脉冲能量几十微焦到百微焦的皮秒激光，容易产生热影响区等影响加工精度的因素。但nJ量级的激光对于某些应用来说又达不到材料的消融阈值。所以后来我又进行了100kHz的再生放大试验，最终获得了20.5W的1064nm激光，单脉冲能量200微焦左右，并且通过简单改动，可以提升到30W。从试验室值讲，基本上赶上国外08年的水平了。但要产品化，还有很多工艺的事情要做，真是头疼，麻烦的利害。</td></tr></table> </div> <div id="comment_1019809" 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-23681.html" c="1"><img src="http://www.oecr.com/uc_server/avatar.php?uid=23681&size=small" /></a> <a href="http://club.oecr.com/space-uid-23681.html" class="xi2 xw1">nknight23</a> </div> <div class="psti"> 厉害，厉害 <span class="xg1"> 发表于 2012-6-28 13:58</span> </div> </div> </div> <div id="post_rate_div_1019809"></div> </div> </dd> </dl> </div> <div id="post_1019557" class="xld xlda mbm"><dl class="bbda cl"> <dd class="m avt"><a href="http://club.oecr.com/space-uid-23681.html"><img src="http://www.oecr.com/uc_server/avatar.php?uid=23681&size=small" /></a></dd> <dt> <span class="y xw0"> </span> <a href="http://club.oecr.com/space-uid-23681.html" target="_blank" class="xi2">nknight23</a><em id="author_1019557"> 发表于</em> <span class="xg1 xw0">2012-6-27 14:16:21</span> </dt> <dd class="z"><div class="pcb"> <div class="t_fsz"> <table cellspacing="0" cellpadding="0"><tr><td class="t_f" id="postmessage_1019557"> <font size="5">对ps不是很了解，向你请教。<br /> 我看到的国外ps激光器的指标有三种，一种是频率80MHZ左右，那就是锁模振荡器。一种是频率几百kHz，一种是跟你这款类似的kHz量级，都是振荡+再生放大，这种频率差异是什么原因？高频小能量和低频大能量各有各的不同用途？</font></td></tr></table> </div> <div id="comment_1019557" 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-23681.html" c="1"><img src="http://www.oecr.com/uc_server/avatar.php?uid=23681&size=small" /></a> <a href="http://club.oecr.com/space-uid-23681.html" class="xi2 xw1">nknight23</a> </div> <div class="psti"> 哦，谢谢，还是选择不同性能的电光Q器件导致了kHZ量级和几百kHZ的差异。用途呢？KHZ单脉冲能量大，应该是工业用的，几百KHz科研用？ <span class="xg1"> 发表于 2012-6-28 10:54</span> </div> </div> <div class="pstl xs1 cl"> <div class="psta vm"> <a href="http://club.oecr.com/space-uid-56028.html" c="1"><img src="http://www.oecr.com/uc_server/avatar.php?uid=56028&size=small" /></a> <a href="http://club.oecr.com/space-uid-56028.html" class="xi2 xw1">calvino</a> </div> <div class="psti"> kHZ级放大，放大级都是电光Q，电光Q本身性能，以及再生放大需要选单脉冲放大限制了频率。几十几百兆的SESAM不用说了，频率与腔长关系的基本原理 <span class="xg1"> 发表于 2012-6-28 08:30</span> </div> </div> </div> <div id="post_rate_div_1019557"></div> </div> </dd> </dl> </div> <div id="post_610589" class="xld xlda mbm"><dl class="bbda cl"> <dd class="m avt"><a href="http://club.oecr.com/space-uid-44693.html"><img src="http://www.oecr.com/uc_server/avatar.php?uid=44693&size=small" /></a></dd> <dt> <span class="y xw0"> </span> <a href="http://club.oecr.com/space-uid-44693.html" target="_blank" class="xi2">myxinjie</a><em id="author_610589"> 发表于</em> <span class="xg1 xw0">2009-11-23 14:53:10</span> </dt> <dd class="z"><div class="pcb"> <div class="t_fsz"> <table cellspacing="0" cellpadding="0"><tr><td class="t_f" id="postmessage_610589"> 做的不错。腔内损耗是比较难测的。一般的做法是打入一个脉冲观察此脉冲的振荡衰减，或者观察频谱情况，得到光子寿命，不过这两者都很难。通过计算间接得出的话，激光晶体的增益又很难估计。</td></tr></table> </div> <div id="comment_610589" class="cm"> </div> <div id="post_rate_div_610589"></div> </div> </dd> </dl> </div> <div id="post_606422" class="xld xlda mbm"><dl class="bbda cl"> <dd class="m avt"><a href="http://club.oecr.com/space-uid-43242.html"><img src="http://www.oecr.com/uc_server/avatar.php?uid=43242&size=small" /></a></dd> <dt> <span class="y xw0"> </span> <a href="http://club.oecr.com/space-uid-43242.html" target="_blank" class="xi2">新警察</a><em id="author_606422"> 发表于</em> <span class="xg1 xw0">2009-11-1 19:28:08</span> </dt> <dd class="z"><div class="pcb"> <div class="t_fsz"> <table cellspacing="0" cellpadding="0"><tr><td class="t_f" id="postmessage_606422"> 对SESAM不甚了解，所以不能多说。<br /> 不错，有产品，有勇气。<br /> 说实话，这种东西在国内也只有国家机构才搞得起，民企还真不知道一年能不能卖出去一台。<br /> 个人觉得比那些拿国家的钱，做一些低端的产品，反正不是用的自己的钱，只要有人要就给，不管收不收得回来钱的国营企业或机构强多了。</td></tr></table> </div> <div id="comment_606422" class="cm"> </div> <div id="post_rate_div_606422"></div> </div> </dd> </dl> </div> <div id="post_606390" class="xld xlda mbm"><dl class="bbda cl"> <dd class="m avt"><a href="http://club.oecr.com/space-uid-51129.html"><img src="http://www.oecr.com/uc_server/avatar.php?uid=51129&size=small" /></a></dd> <dt> <span class="y xw0"> </span> <a href="http://club.oecr.com/space-uid-51129.html" target="_blank" class="xi2">qshpang</a><em id="author_606390"> 发表于</em> <span class="xg1 xw0">2009-11-1 16:02:19</span> </dt> <dd class="z"><div class="pcb"> <div class="t_fsz"> <table cellspacing="0" cellpadding="0"><tr><td class="t_f" id="postmessage_606390"> 哈哈，还不错哦，师弟哦，</td></tr></table> </div> <div id="comment_606390" class="cm"> </div> <div id="post_rate_div_606390"></div> </div> </dd> </dl> </div> <div id="post_606329" class="xld xlda mbm"><dl class="bbda cl"> <dd class="m avt"><a href="http://club.oecr.com/space-uid-84263.html"><img src="http://www.oecr.com/uc_server/avatar.php?uid=84263&size=small" /></a></dd> <dt> <span class="y xw0"> </span> <a href="http://club.oecr.com/space-uid-84263.html" target="_blank" class="xi2">goldenld</a><em id="author_606329"> 发表于</em> <span class="xg1 xw0">2009-10-31 20:29:56</span> </dt> <dd class="z"><div class="pcb"> <div class="t_fsz"> <table cellspacing="0" cellpadding="0"><tr><td class="t_f" id="postmessage_606329"> lz难道是我直系师兄？？？</td></tr></table> </div> <div id="comment_606329" class="cm"> </div> <div id="post_rate_div_606329"></div> </div> </dd> </dl> </div> <div id="post_574539" class="xld xlda mbm"><dl class="bbda cl"> <dd class="m avt"><a href="http://club.oecr.com/space-uid-68586.html"><img src="http://www.oecr.com/uc_server/avatar.php?uid=68586&size=small" /></a></dd> <dt> <span class="y xw0"> </span> <a href="http://club.oecr.com/space-uid-68586.html" target="_blank" class="xi2">laserjiang</a><em id="author_574539"> 发表于</em> <span class="xg1 xw0">2009-7-19 15:11:36</span> </dt> <dd class="z"><div class="pcb"> <div class="t_fsz"> <table cellspacing="0" cellpadding="0"><tr><td class="t_f" id="postmessage_574539"> 哈哈~~~~~~~~~~~~~~~~~~~~~~~~~~~~~</td></tr></table> </div> <div id="comment_574539" 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