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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-104929.html" target="_blank" class="xi2"><img src="http://www.oecr.com/uc_server/avatar.php?uid=104929&size=small" /></a> <span class="tit_author"> <a href="http://club.oecr.com/space-uid-104929.html">houshannanhai</a> </span> </div> <div class="date"><span>发布时间:</span> 2012-6-5 19:29</div> <div class="album_info"> <h3>正文摘要: </h3> <p> 请教各位高手，一台DFB激光器输出1565到1569nm的激光。激光进入怀特池中，池内放有一面镀有铝膜的反射镜。激光在池内经过大约四十次的反射镜后，探测探测到不同波长的激光功率明显不同。而激光直接射入 ...</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_1019066" class="xld xlda mbm"><dl class="bbda cl"> <dd class="m avt"><a href="http://club.oecr.com/space-uid-25284.html"><img src="http://www.oecr.com/uc_server/avatar.php?uid=25284&size=small" /></a></dd> <dt> <span class="y xw0"> </span> <a href="http://club.oecr.com/space-uid-25284.html" target="_blank" class="xi2">tfc</a><em id="author_1019066"> 发表于</em> <span class="xg1 xw0">2012-6-26 08:07:05</span> </dt> <dd class="z"><div class="pcb"> <div class="t_fsz"> <table cellspacing="0" cellpadding="0"><tr><td class="t_f" id="postmessage_1019066"> 能告诉我们，结果怎样了吗</td></tr></table> </div> <div id="comment_1019066" class="cm"> </div> <div id="post_rate_div_1019066"></div> </div> </dd> </dl> </div> <div id="post_1019011" class="xld xlda mbm"><dl class="bbda cl"> <dd class="m avt"><a href="http://club.oecr.com/space-uid-104929.html"><img src="http://www.oecr.com/uc_server/avatar.php?uid=104929&size=small" /></a></dd> <dt> <span class="y xw0"> </span> <a href="http://club.oecr.com/space-uid-104929.html" target="_blank" class="xi2">houshannanhai</a><em id="author_1019011"> 发表于</em> <span class="xg1 xw0">2012-6-25 23:22:09</span> </dt> <dd class="z"><div class="pcb"> <div class="t_fsz"> <table cellspacing="0" cellpadding="0"><tr><td class="t_f" id="postmessage_1019011"> <div class="quote"><blockquote><font size="2"><font color="#999999">tfc 发表于 2012-6-13 08:26</font> <a href="http://bbs.oecr.com/forum.php?mod=redirect&goto=findpost&pid=1014910&ptid=251472" target="_blank"><img id="aimg_w4o69" 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><br /> 前表面是指光先到膜层就被反射，对于膜层来说也是表面反射；后表面镀膜，指光先经过基底，再到膜层，再反 ...</blockquote></div><br /> 感谢你的回复 我朋友还是没有办法去解决这个问题 所以换了一个方案</td></tr></table> </div> <div id="comment_1019011" class="cm"> </div> <div id="post_rate_div_1019011"></div> </div> </dd> </dl> <script type="text/javascript" reload="1"> aimgcount[1019011] = ['w4o69']; attachimggroup(1019011); </script> </div> <div id="post_1019010" class="xld xlda mbm"><dl class="bbda cl"> <dd class="m avt"><a href="http://club.oecr.com/space-uid-104929.html"><img src="http://www.oecr.com/uc_server/avatar.php?uid=104929&size=small" /></a></dd> <dt> <span class="y xw0"> </span> <a href="http://club.oecr.com/space-uid-104929.html" target="_blank" class="xi2">houshannanhai</a><em id="author_1019010"> 发表于</em> <span class="xg1 xw0">2012-6-25 23:22:09</span> </dt> <dd class="z"><div class="pcb"> <div class="t_fsz"> <table cellspacing="0" cellpadding="0"><tr><td class="t_f" id="postmessage_1019010"> <div class="quote"><blockquote><font size="2"><font color="#999999">tfc 发表于 2012-6-13 08:26</font> <a href="http://bbs.oecr.com/forum.php?mod=redirect&goto=findpost&pid=1014910&ptid=251472" target="_blank"><img id="aimg_sIFqK" 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><br /> 前表面是指光先到膜层就被反射，对于膜层来说也是表面反射；后表面镀膜，指光先经过基底，再到膜层，再反 ...</blockquote></div><br /> 感谢你的回复 我朋友还是没有办法去解决这个问题 所以换了一个方案</td></tr></table> </div> <div id="comment_1019010" class="cm"> </div> <div id="post_rate_div_1019010"></div> </div> </dd> </dl> <script type="text/javascript" reload="1"> aimgcount[1019010] = ['sIFqK']; attachimggroup(1019010); </script> </div> <div id="post_1019009" class="xld xlda mbm"><dl class="bbda cl"> <dd class="m avt"><a href="http://club.oecr.com/space-uid-104929.html"><img src="http://www.oecr.com/uc_server/avatar.php?uid=104929&size=small" /></a></dd> <dt> <span class="y xw0"> </span> <a href="http://club.oecr.com/space-uid-104929.html" target="_blank" class="xi2">houshannanhai</a><em id="author_1019009"> 发表于</em> <span class="xg1 xw0">2012-6-25 23:22:09</span> </dt> <dd class="z"><div class="pcb"> <div class="t_fsz"> <table cellspacing="0" cellpadding="0"><tr><td class="t_f" id="postmessage_1019009"> <div class="quote"><blockquote><font size="2"><font color="#999999">tfc 发表于 2012-6-13 08:26</font> <a href="http://bbs.oecr.com/forum.php?mod=redirect&goto=findpost&pid=1014910&ptid=251472" target="_blank"><img id="aimg_Gh66D" 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><br /> 前表面是指光先到膜层就被反射，对于膜层来说也是表面反射；后表面镀膜，指光先经过基底，再到膜层，再反 ...</blockquote></div><br /> 感谢你的回复 我朋友还是没有办法去解决这个问题 所以换了一个方案</td></tr></table> </div> <div id="comment_1019009" class="cm"> </div> <div id="post_rate_div_1019009"></div> </div> </dd> </dl> <script type="text/javascript" reload="1"> aimgcount[1019009] = ['Gh66D']; attachimggroup(1019009); </script> </div> <div id="post_1014910" class="xld xlda mbm"><dl class="bbda cl"> <dd class="m avt"><a href="http://club.oecr.com/space-uid-25284.html"><img src="http://www.oecr.com/uc_server/avatar.php?uid=25284&size=small" /></a></dd> <dt> <span class="y xw0"> </span> <a href="http://club.oecr.com/space-uid-25284.html" target="_blank" class="xi2">tfc</a><em id="author_1014910"> 发表于</em> <span class="xg1 xw0">2012-6-13 08:26:12</span> </dt> <dd class="z"><div class="pcb"> <div class="t_fsz"> <table cellspacing="0" cellpadding="0"><tr><td class="t_f" id="postmessage_1014910"> <div class="quote"><blockquote><font size="2"><font color="#999999">houshannanhai 发表于 2012-6-11 23:49</font> <a href="http://bbs.oecr.com/forum.php?mod=redirect&goto=findpost&pid=1014452&ptid=251472" target="_blank"><img id="aimg_WvxtH" 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><br /> 您好 很感谢您的回复 我学过关于薄膜的知识早就还给老师了<br /> 您说的前表面和后表面是这个意思吗？<br /> 如果是 ...</blockquote></div><br /> 前表面是指光先到膜层就被反射，对于膜层来说也是表面反射；后表面镀膜，指光先经过基底，再到膜层，再反射，对于也是内反射，你这个反射在几纳米就区别非常大，假定按你说的经过40次反射（你说大概40几次，算40次区别小点）那么程序计算<br /> Sub aa()<br /> a = 0.89<br /> b = 0.89<br /> For i = 1 To 39<br /> a = a * b<br /> Next<br /> Cells(2, 4) = a<br /> End Sub<br /> 当铝膜反射率为90%时，经过40次前表面反射，反射率为1.478%<br /> 当铝膜反射率为89%时，经过40次前表面反射，反射率为0.9454%<br /> 所以你所说的反射率区别特别大，要还原到一次反射率，看看到底差百分几，然后再比较和分析才容易出正确答案。</td></tr></table> </div> <div id="comment_1014910" class="cm"> </div> <div id="post_rate_div_1014910"></div> </div> </dd> </dl> <script type="text/javascript" reload="1"> aimgcount[1014910] = ['WvxtH']; attachimggroup(1014910); </script> </div> <div id="post_1014475" class="xld xlda mbm"><dl class="bbda cl"> <dd class="m avt"><a href="http://club.oecr.com/space-uid-104929.html"><img src="http://www.oecr.com/uc_server/avatar.php?uid=104929&size=small" /></a></dd> <dt> <span class="y xw0"> </span> <a href="http://club.oecr.com/space-uid-104929.html" target="_blank" class="xi2">houshannanhai</a><em id="author_1014475"> 发表于</em> <span class="xg1 xw0">2012-6-12 00:41:09</span> </dt> <dd class="z"><div class="pcb"> <div class="t_fsz"> <table cellspacing="0" cellpadding="0"><tr><td class="t_f" id="postmessage_1014475"> <div class="quote"><blockquote><font size="2"><font color="#999999">opticray 发表于 2012-6-8 15:12</font> <a href="http://bbs.oecr.com/forum.php?mod=redirect&goto=findpost&pid=1013273&ptid=251472" target="_blank"><img id="aimg_QBe18" 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><br /> 能否从镀膜吸收考虑么</blockquote></div><br /> 请您具体赐教</td></tr></table> </div> <div id="comment_1014475" class="cm"> </div> <div id="post_rate_div_1014475"></div> </div> </dd> </dl> <script type="text/javascript" reload="1"> aimgcount[1014475] = ['QBe18']; attachimggroup(1014475); </script> </div> <div id="post_1013273" class="xld xlda mbm"><dl class="bbda cl"> <dd class="m avt"><a href="http://club.oecr.com/space-uid-116072.html"><img src="http://www.oecr.com/uc_server/avatar.php?uid=116072&size=small" /></a></dd> <dt> <span class="y xw0"> </span> <a href="http://club.oecr.com/space-uid-116072.html" target="_blank" class="xi2">opticray</a><em id="author_1013273"> 发表于</em> <span class="xg1 xw0">2012-6-8 15:12:41</span> </dt> <dd class="z"><div class="pcb"> <div class="t_fsz"> <table cellspacing="0" cellpadding="0"><tr><td class="t_f" id="postmessage_1013273"> 能否从镀膜吸收考虑么</td></tr></table> </div> <div id="comment_1013273" class="cm"> </div> <div id="post_rate_div_1013273"></div> </div> </dd> </dl> </div> <div id="post_1013146" class="xld xlda mbm"><dl class="bbda cl"> <dd class="m avt"><a href="http://club.oecr.com/space-uid-25284.html"><img src="http://www.oecr.com/uc_server/avatar.php?uid=25284&size=small" /></a></dd> <dt> <span class="y xw0"> </span> <a href="http://club.oecr.com/space-uid-25284.html" target="_blank" class="xi2">tfc</a><em id="author_1013146"> 发表于</em> <span class="xg1 xw0">2012-6-8 10:10:26</span> </dt> <dd class="z"><div class="pcb"> <div class="t_fsz"> <table cellspacing="0" cellpadding="0"><tr><td class="t_f" id="postmessage_1013146"> 如果你反射镜是前表面反射，可能与保护膜有关，如果是背面反射就可能与材料有关，还有因为空气红外吸收也在这附近，试一下氩气吧，其他就不好说。或者反射镜如果可以拆出来，可以试1，2，3，4.。。。不同次反射，看到底多少次开始有明显不同，另外一个情况，把激光能量衰减一半直接测功率，如果出现不同，说明开始时功率超过探测器敏感范围</td></tr></table> </div> <div id="comment_1013146" class="cm"> </div> <div id="post_rate_div_1013146"></div> </div> </dd> </dl> </div> <div id="post_1012821" class="xld xlda mbm"><dl class="bbda cl"> <dd class="m avt"><a href="http://club.oecr.com/space-uid-104929.html"><img src="http://www.oecr.com/uc_server/avatar.php?uid=104929&size=small" /></a></dd> <dt> <span class="y xw0"> </span> <a href="http://club.oecr.com/space-uid-104929.html" target="_blank" class="xi2">houshannanhai</a><em id="author_1012821"> 发表于</em> <span class="xg1 xw0">2012-6-7 14:23:55</span> </dt> <dd class="z"><div class="pcb"> <div class="t_fsz"> <table cellspacing="0" cellpadding="0"><tr><td class="t_f" id="postmessage_1012821"> <div class="quote"><blockquote><font size="2"><font color="#999999">tfc 发表于 2012-6-7 07:49</font> <a href="http://bbs.oecr.com/forum.php?mod=redirect&goto=findpost&pid=1012623&ptid=251472" target="_blank"><img id="aimg_F153u" 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><br /> 有些物质吸收带很陡的，并且你光路来回反射40多次，情况当然严重了，不过如果要证明，得到化学实验室做吸 ...</blockquote></div><br /> 我问过我的朋友 他说池子中是空气，用通入纯氮气也试过，估计不是气体的吸收，如果是有物质吸收的话那可能是固体，镀膜或光学玻璃对激光的吸收。您是怎么看的？<br /> </td></tr></table> </div> <div id="comment_1012821" class="cm"> </div> <div id="post_rate_div_1012821"></div> </div> </dd> </dl> <script type="text/javascript" reload="1"> aimgcount[1012821] = ['F153u']; attachimggroup(1012821); </script> </div> <div id="post_1012819" class="xld xlda mbm"><dl class="bbda cl"> <dd class="m avt"><a href="http://club.oecr.com/space-uid-104929.html"><img src="http://www.oecr.com/uc_server/avatar.php?uid=104929&size=small" /></a></dd> <dt> <span class="y xw0"> </span> <a href="http://club.oecr.com/space-uid-104929.html" target="_blank" class="xi2">houshannanhai</a><em id="author_1012819"> 发表于</em> <span class="xg1 xw0">2012-6-7 14:23:31</span> </dt> <dd class="z"><div class="pcb"> <div class="t_fsz"> <table cellspacing="0" cellpadding="0"><tr><td class="t_f" id="postmessage_1012819"> 我问过我的朋友 他说池子中是空气，用通入纯氮气也试过，估计不是气体的吸收，如果是有物质吸收的话那可能是固体，镀膜或光学玻璃对激光的吸收。您是怎么看的？<br /> </td></tr></table> </div> <div id="comment_1012819" class="cm"> </div> <div id="post_rate_div_1012819"></div> </div> </dd> </dl> </div> <div id="post_1012623" class="xld xlda mbm"><dl class="bbda cl"> <dd class="m avt"><a href="http://club.oecr.com/space-uid-25284.html"><img src="http://www.oecr.com/uc_server/avatar.php?uid=25284&size=small" /></a></dd> <dt> <span class="y xw0"> </span> <a href="http://club.oecr.com/space-uid-25284.html" target="_blank" class="xi2">tfc</a><em id="author_1012623"> 发表于</em> <span class="xg1 xw0">2012-6-7 07:49:43</span> </dt> <dd class="z"><div class="pcb"> <div class="t_fsz"> <table cellspacing="0" cellpadding="0"><tr><td class="t_f" id="postmessage_1012623"> <div class="quote"><blockquote><font size="2"><font color="#999999">houshannanhai 发表于 2012-6-6 21:48</font> <a href="http://bbs.oecr.com/forum.php?mod=redirect&goto=findpost&pid=1012536&ptid=251472" target="_blank"><img id="aimg_mPqJ1" 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><br /> 谢谢您的回答 我再试试 但我有一个疑问 波长仅相差3nm。那么即使存在某种物质 其吸收光谱的位置在这个范 ...</blockquote></div><br /> 有些物质吸收带很陡的，并且你光路来回反射40多次，情况当然严重了，不过如果要证明，得到化学实验室做吸收光谱</td></tr></table> </div> <div id="comment_1012623" class="cm"> </div> <div id="post_rate_div_1012623"></div> </div> </dd> </dl> <script type="text/javascript" reload="1"> aimgcount[1012623] = ['mPqJ1']; attachimggroup(1012623); </script> </div> </div> </div> </div> <script type="text/javascript"> new 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