416 Diffraction Patterns and PolarizationSection 38.4The Diffraction GratingP38.23d==×=−1 001 00 105002...cm2000mmµsin..θλ××=−−md1640 10500 10012896mmej=°735.P38.24The principal maxima are defined bydmsinθλ=m=012,,,….For m=1 ,λθ=dsinwhere is the angle between the central (m=0 ) and the first order(m=1 ) maxima. The value of can be determined from the informationgiven about the distance between maxima and the grating-to-screendistance. From the figure,tan..04880284m1.72 mso15 8.andsin.=0273.1.72 m0.488 mFIG. P38.24The distance between grating “slits” equals the reciprocal of the number of grating lines percentimeterd×=×−−153101 88 101 88 10143cmcmnm.The wavelength is×=dsin..188 1002735143nmnmaf.P38.25The grating spacing isd=×=×−−100 10222 1026..m4500m.In the 1st-order spectrum, diffraction angles are given by
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This note was uploaded on 12/14/2011 for the course PHY 203 taught by Professor Staff during the Fall '11 term at Indiana State University .