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</div> <div class="bm"> <div class="bm_c xld"> <b>用1064的激光二极管直接经过KTP会不会出532:</b><div class="postmsg">请高手解答!谢谢<br /> 管子是一瓦的,是使用KTP好还是LBO好???</div> <div class="postmsg">我想也应该可以，只要有足够的功率密度和相干性。<br /> 楼上的兄弟，你的大功率绿光做的怎么样了？</div> <div class="postmsg">好羡慕你啊.有1064的管子.我想可以吧,只要达到了阈值.KTP是不是更好调节啊?</div> <div class="postmsg">我的大功率532正在进行.我想是不是可以直接用1064的LD直接进行倍频,要是可以的话就省去了泵蒲的那一部分.现在关键这种管子在国外,我无法拿到做实验呀!!</div> <div class="postmsg">这个东西多少钱啊？真是好东西！</div> <div class="postmsg">希望不大<br /> 现在940的LD多的是，但很少听说用它来倍频470蓝光的</div> <div class="postmsg">电阻兄：你们有没有做小功率绿光，就是用808泵浦的那种，能不能给点驱动电路方面的建议，谢谢！</div> <div class="postmsg"><<img src="static/image/smiley/default/titter.gif" smilieid="9" border="0" alt="" />>能出，我做过，呵呵</P><br /> <<img src="static/image/smiley/default/titter.gif" smilieid="9" border="0" alt="" />>只是功率低而已</P></div> <div class="postmsg"><STRONG><FONT face=Verdana color=#61b713>etan兄,你是用的什么样的管子,多大功率和波长?使用什么晶体?出多大功率的光?谢谢!!!!!</FONT></STRONG><img src="static/image/smiley/default/em01.gif" smilieid="30" border="0" alt="" /></div> <div class="postmsg">那要是用1064的做出更高功率的话，以后做激光器可就简单方便咯。。。冷却问题都好办了，哈。<img src="static/image/smiley/default/em04.gif" smilieid="33" border="0" alt="" /></div> <div class="postmsg">嘿嘿，我也只是在做别的实验的时候观察到的而已。<br /> 当时，我用20mW的1064nm激光器(DPSSL)直接打在KTP晶体上，看见了微弱的绿光。<br /> 绿光的功率太低了。</div> <div class="postmsg"><<img src="static/image/smiley/default/titter.gif" smilieid="9" border="0" alt="" />>出光是不成问题的，但是功率密度得足够高，另外，这种情况下肯定要使用KTP,他的倍频效率高。用LBO可能不会出光。</P></div> <div class="postmsg">1064的管子直接倍频的话，你的功率密度很低的，按C方*L方*I计算，不考虑相位失配的情况下，9mm长的KTP晶体最高转换效率才0.22% 这样的转换效率出来的绿光 你能做什么？ 还得说是不考虑相位失赔。。。不信你自己算算，你管子的光斑半径我按0.1mm算的</div> <div class="postmsg">可以，就是效率的问题，直接过ktp，估计就是可以看到绿光，可能能做pointer用</div> <div class="postmsg">整形完过后，在做聚焦，功率会高点。国外也有用半导体激光器用在打标系统上的。我想整形是倍频的关键。</div> <div class="postmsg">如果使用KTP倍频的话，想提高532nm光的功率，关键是要提高1064nm光功率密度；改善光斑，功率应该也难以得到质的提高</div> <div class="postmsg">电阻已经很久不在论坛里出现了，不知道去哪里高就了？</div> <div class="postmsg">要是能把倍频材料搞成波导形状，可能可以用LD直接做倍频了。</div> <div class="postmsg">不会有结果的,主要是LD的相关性太差了.</div> <div class="postmsg">基本很难实现高效率，因为半导体激光器的模式以及光斑都比DPSS的烂很多，所以在经过倍频时的效率是相当低的，我曾经调研过940波段的LD直接倍频的资料，很多人做过相应的研究，但是效率很低的。</div> <div class="postmsg"><i class="pstatus"> 本帖最后由 wang 于 2011-2-18 15:24 编辑 </i><br /> <br /> 有点开玩笑了，其实不可能实现的； 首先从光密度上就不可能达到好的要求</div> <div class="postmsg"><div class="quote"><blockquote><font size="2"><font color="#999999">totio 发表于 2009-5-31 09:51</font> <a href="http://forum.oecr.com/forum.php?mod=redirect&goto=findpost&pid=559279&ptid=36180" target="_blank"><img id="aimg_Zvmd5" onclick="zoom(this, this.src, 0, 0, 0)" class="zoom" src="static/image/common/back.gif" onmouseover="img_onmouseoverfunc(this)" onload="thumbImg(this)" border="0" alt="" /></a></font><br /> 同意，半导体激光器直接倍频我觉得还是有问题的，比如说功率密度等，另外，可能是我孤陋寡闻，还真不知道 ...</blockquote></div><br /> 1064的激光二极管很早就有了，我用过的最大功率为3W。</div> <div class="postmsg">可以，只是转换效率低到没有价值的地步。理论上只要光谱宽度够窄，功率密度够高，就可以得到高的转换效率。</div> <div style="height200px;"></div> </div> </div> </div> </div></div> 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