9.4: Gaussian Light Beams - Physics LibreTexts
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WebJun 21, 2021 · The output beam from a typical gas laser, a He-Ne laser for example, exhibits the spatial variation ( 9.4.2) at the output mirror with w 0 approximately equal to 1 mm. Such a beam profile is called a Gaussian beam profile. The spatial Fourier integral in ( 9.4.1) can be inverted for z=0 to obtain.
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