Optics of Fibers and Fiber Probes

In laser medicine, light has to be transported from the laser to the location of treatment or, for tissue diagnostics, from the site of tissue fluorescence to the sensing equipment. The most effective and practical way of transportation for most laser wavelengths and most applications is the use of fiber optics.1 As illustrated in Fig. 19.1, the components of a fiber-based delivery system are (a) the laser, emitting the laser beam; (b) the fiber coupler, launching the beam into a fiber positioned in an XYZ translating platform; (c) the fiber, transporting the laser light; and (d) the (modified) fiber tip or probe, emitting the laser light coming out of the fiber.

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