Fundamental Optics Gaussian Beam Optics
laser beam, we must define its diameter in some way. There are two commonlyaccepted definitions. One definition is the diameter at which the beam irradiance (intensity) has fallen to 1/e2 (13.5 percent) of its peak, or axial value and the other is the diameter at which the beam irradiance Fundamental Optics Gaussian Beam Optics Optical ...
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