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Diffraction By Gratings

Diffraction By Gratings - GRATING EQUATIONS...

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Unformatted text preview: GRATING EQUATIONS FORWARD-DIFFRACTED ORDERS n1sine' — n3sine’i’ = i% BACKWARD- DIFFRACTED ORDERS . I . ’ - A Sine + sme. = l— ' Am 9 = angle of incidence GIiI= angle of forward diffraction I 6i= angle of backward diffraction All are measured CCW from the normal in their respective regions. '”°i‘v’§v"\$ /' '“‘ Thin Graﬂng 17x=A(sin6'-szn¢9}) i=-1 Thick Graﬂna 4' >\ =/\/5z'n 6'- :in 8;) ...
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