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Light Propagation in Free Space We will now review the propagation of light in free space and the principles of Fourier optics. These concepts will be used as a foundation for light microscopy. Let us first review the well-known solutions of the wave propagation in free space (or vacuum). The Helmholtz equation that describes the propagation of field emitted at frequency ω by a source s has the form
Gabriel Popescu: Quantitative Phase Imaging of Cells and Tissues. Groundwork, Chapter (McGraw-Hill Professional, 2011), AccessEngineering Export