文档介绍：Applications of classical wave effects:+ important effects that re-appear in quantum physics????()()?II01001001220diff3()?()()()?II0Sum2I0????()()()?II0Sum2I0????c/3yyOverviewOverviewlCircular Diffraction (foreshadowing of quantum uncertainty)lAngular resolution (Rayleigh’s criterion)lMinimum spot sizelInterferometerslMichelsonlSagnaclApplicationslResonancelGroup VelocityDiffraction-limited OpticsDiffraction-limited OpticslDiffraction has important implications for optical instruments Lens-making is a craft. Even for a perfectly designed lens, however, the image of a point source will be a little “blurry”due to diffraction in passing through the circular aperture of the image of a point source through a circular aperture is like a single-slit diffraction pattern. But note the difference:The amount of ‘smearing’ of the image is determined by size of the aperture D, and wavelength of incident light, ??a????? ?Circular apertureImage ()??II0??o?DImage planePoint objectTransmission of light through slits and circular aperturesTransmission of light through slits and circular aperturesMonochromatic light source at a great distance, or a at any distance:Slit, width aLens, diameter DPinhole, diameter ()????????????a???????????????a?()??????????????D??????????????D?()??????????????D??????????????D?II0Observation screen:Image Plane:Observation screen:Laser with pinholesCircular-aperture diffraction pattern =“the Airy disk”. Central lobe contains 84% of 1985, a laser beam with a wavelength of ?= 500 nm was fired from the earth and reflected off the space shuttle D