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Diffraction efficiency
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<h2 id="grating-efficiency">Grating efficiency</h2> <p>In the most common case – the diffraction efficiency of optical gratings (therefore also called <i>grating efficiency</i>) – there are two possibilities to specify efficiency:<a class="footnote-ref" id="fnref:1" href="#fn:1"><sup>1</sup></a><a class="footnote-ref" id="fnref:2" href="#fn:2"><sup>2</sup></a> </p> <ul><li>The <i>absolute efficiency</i> is defined as above and relates the power diffracted into a particular order to the incident power.</li> <li>The <i>relative efficiency</i> relates the power diffracted into a particular order to the power that would be reflected by a mirror of the same coating as the grating, therefore attributing to inevitable reflection losses at the grating but not caused by inefficient diffraction itself.</li></ul> <h2 id="external-links">External links</h2> <ul><li>Christopher Palmer (2020). <a href="https://www.gratinglab.com/Information/Handbook/Handbook.aspx">"Efficiency Characteristics of Diffraction Gratings"</a>. <i>Diffraction Grating Handbook (8th edition)</i>. MKS Newport. Retrieved 13 March 2020.</li></ul> <h2 id="references">References</h2> <ol> <li id="fn:1"><p>"Diffraction Efficiency & Relationship between Diffraction Efficiency and Polarization". Shimadzu Corporation. 2012. Retrieved 1 November 2012. <a href="http://www.shimadzu.com/products/opt/oh80jt0000001v0w.html" target="_blank">http://www.shimadzu.com/products/opt/oh80jt0000001v0w.html</a> <a href="#fnref:1" class="footnote-back-ref">↩</a></p></li> <li id="fn:2"><p>"Technical Note 10 – Guidelines for specifying diffraction gratings". Newport Corporation. Retrieved 1 November 2012. <a href="http://gratings.newport.com/library/technotes/technote10.asp" target="_blank">http://gratings.newport.com/library/technotes/technote10.asp</a> <a href="#fnref:2" class="footnote-back-ref">↩</a></p></li> </ol>