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<h2 class="hd hd-2 unit-title">Semiconductor Lasers</h2>
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<h3 class="hd hd-2">Semiconductor Lasers</h3>
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<h2 class="hd hd-2 unit-title">In-Lecture Question 6.3</h2>
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In-Lecture Question 6.3
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<p>Why is it more difficult to make a laser with shorter wavelength?</p>
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<h2 class="hd hd-2 unit-title">Heterojunction Lasers </h2>
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<h3 class="hd hd-2">Heterojunction Lasers</h3>
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<h2 class="hd hd-2 unit-title">Heterojunction Lasers: More Details & Summary</h2>
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<p>Define population inversion and light confinement within the context of a laser. Explain why each of these is important in a laser.</p>
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<span class="notification-message" aria-describedby="78d4942c6d164c8997dcdfb8b9cda94f-problem-title">None
</span>
<div class="notification-btn-wrapper">
<button type="button" class="btn btn-default btn-small notification-btn review-btn sr">Review</button>
</div>
</div>
<div class="notification general notification-show-answer
is-hidden"
tabindex="-1">
<span class="icon fa fa-info-circle" aria-hidden="true"></span>
<span class="notification-message" aria-describedby="78d4942c6d164c8997dcdfb8b9cda94f-problem-title">Answers are displayed within the problem
</span>
<div class="notification-btn-wrapper">
<button type="button" class="btn btn-default btn-small notification-btn review-btn sr">Review</button>
</div>
</div>
</div>
"
data-graded="False">
<p class="loading-spinner">
<i class="fa fa-spinner fa-pulse fa-2x fa-fw"></i>
<span class="sr">Loading…</span>
</p>
</div>
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