Laser science or optical device physics is a branch of optics that describes the idea of lasers. Optical device science is mainly involved with quantum physics, optical device construction, optical cavity style, the physics of manufacturing a population inversion in optical device media, and therefore the temporal evolution of the sunshine field within the optical device. It’s conjointly involved with the physics of light beam propagation, notably the physics of Gaussian beams, with optical device applications, and with associated fields like nonlinear optics and quantum optics.
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