where A and T – the amplitude and the period of the sinusoidal profile, respectively.
In accordance with the Huygens-Fresnel principle, each point of the incident wavefront, becoming a source of secondary waves, creates in the observation direction the wave whose amplitude is equal to
where U0 – constant, proportional to the amplitude of the incident wave, k 2SO – wavenumber, ǻɯ – optical
path difference between the beams 1 and 2 diffracted from the grating, N – number of periods in the grating.
where A and T – the amplitude and the period of the sinusoidal profile, respectively. In accordance with the Huygens-Fresnel principle, each point of the incident wavefront, becoming a source of secondary waves, creates in the observation direction the wave whose amplitude is equal to where U0 – constant, proportional to the amplitude of the incident wave, k 2SO – wavenumber, ǻɯ – optical path difference between the beams 1 and 2 diffracted from the grating, N – number of periods in the grating.
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