Height distribution on a rough plane and specularly diffracted light amplitude are Fourier transform pair

摘要: In this report we show that the amplitude of specularly diffracted light from a plane rough surface as function incident angle cosine is Fourier transform height distribution on surface. Therefore, an even function, which case for many surfaces, can be obtained by measuring intensities. Also, it observed polychromatic illumination spectrum modified and modification depends roughness, angle, wavelength. It also shown that, fixed spectral modifying function. Experimental studies some surfaces different roughnesses, prepared grinding sheet-glasses powders grain sizes, corresponding distributions are Gaussian rms heights two approaches quite consistent.