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<p><a href="page.php?w=laser_scanning">laser scanning</a>, and <a href="page.php?w=light_beam">light beam</a> illumination. With the use of a phosphor like that found on white <a href="page.php?w=LED">LED</a>s, laser diodes can be used for general illumination.</p>

<p><big> Theory </big></p>
<p>A laser diode is electrically a <a href="page.php?w=PIN_diode">PIN diode</a>. The active region of the laser diode is in the intrinsic (I) region, and the carriers (electrons and holes) are pumped into that region from the N and P regions respectively. While initial</p><p>
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