Ray and Wave Propagation through Optical Media
Before entering into a detailed discussion of optical resonators, the subject of Chap. 5, we introduce, in this chapter, a few topics from geometrical and wave optics that are not usually covered in elementary optics texts but provide a useful background. In particular, the matrix formulation of geometrical optics, within the paraxial-ray approximation, and wave propagation, within the paraxial-wave approximation, leading to a treatment of Gaussian beam propagation, will be discussed. In addition, multiple interference, such as in a multilayer dielectric coating or in a Fabry—Perot interferometer, will also be considered.
KeywordsSpot Size Gaussian Beam Beam Waist Spherical Wave Free Spectral Range
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