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<h1>The Laser, Fundamentals and Theory of Operation</h1>
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<LI STYLE="margin-bottom: 220px"><A HREF="http://www.fas.org/man/dod-101/navy/docs/laser/fundamentals.htm" TARGET="_blank" rel="noopener">http://www.fas.org/man/dod-101/<br>navy/docs/laser/fundamentals.htm</A></LI>

<LI STYLE="margin-bottom: 220px"><A HREF="https://en.wikipedia.org/wiki/Laser" TARGET="_blank" rel="noopener">https://en.wikipedia.org/wiki/Laser</A></LI>

<LI STYLE="margin-bottom: 240px"><A HREF="https://www.britannica.com/technology/laser" TARGET="_blank" rel="noopener">https://www.britannica.com/<br>technology/laser</A></LI>

<LI STYLE="margin-bottom: 90px"><A HREF="https://www.elnrsystems.com/laser-welders.htm" TARGET="_blank" rel="noopener">https://www.elnrsystems.com/<br>laser-welders.htm</A></LI>

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        <a href="https://fas.org/man/dod-101/navy/docs/laser/fundamentals.htm" target=_blank rel="noopener"><img style="width: 330px; height: 175px" border=1 src="images/laser.webp"  alt="laser diagram">
         <br>Laser Fundamentals </a><br><br><br>
         
        <a href="https://en.wikipedia.org/wiki/Laser" target=_blank rel="noopener"><img style="width: 330px; height: 172px" border=1 src="images/stimulated-emission.webp"  alt="laser stimulated emission">
         <br>Stimulated Emission</a>    <br><br><br>
         
        <a href="https://www.britannica.com/technology/laser" target=_blank rel="noopener"><img style="width: 330px; height: 259px" border=1 src="images/laser-cutaway-view.webp"  alt="Gas Laser">
         <br>Gas Laser</a> <br><br><br>
         
        <a href="https://www.elnrsystems.com/laser-welders.htm" target=_blank rel="noopener"><img style="width: 330px; height: 154px" border=1 src="images/solid-state-yag-laser.webp"  alt="solid state YAG laser">
         <br>Solid State YAG Laser</a> 
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