<?xml version="1.0" encoding='utf-8'?>
<!DOCTYPE wml PUBLIC "-//WAPFORUM//DTD WML 1.1//EN" "http://www.wapforum.org/DTD/wml_1.1.xml">
<wml>
<card id="card1" title="Active laser medium - Page 6 - Wikipedia">
<p>
<a accesskey="1" href="page.php?w=Active_laser_medium&amp;p=5">1.Previous</a><br />
<a accesskey="3" href="page.php?w=Active_laser_medium&amp;p=7">3.Next</a>
</p>
<p>by <a href="page.php?w=discharge_lamp">discharge lamp</a>s or by other lasers (<a href="page.php?w=semiconductor_laser">semiconductor laser</a>s). More exotic gain media can be pumped by <a href="page.php?w=chemical_reactions">chemical reactions</a>, <a href="page.php?w=nuclear_fission">nuclear fission</a>, or with high-energy <a href="page.php?w=electron_beam">electron beam</a>s.</p>

<p><big>Example of a model of gain medium</big></p>
<p><a href="page.php?w=Image%3ALaserLevels1.png">thumb</a>The simplest model of optical gain in real systems includes</p><p>
<a accesskey="1" href="page.php?w=Active_laser_medium&amp;p=5">1.Previous</a><br />
<a accesskey="3" href="page.php?w=Active_laser_medium&amp;p=7">3.Next</a>
</p>

<do type="prev" label="Search">
        <go href="search.wml"/>
</do>

</card>
</wml>
