mode is the ideal Gaussian beam profile. It features the lowest divergence, highest spatial coherence, and focuses down to the smallest possible spot size. Higher-order modes ( TEM01cap T cap E cap M sub 01 TEM11cap T cap E cap M sub 11 ) display split, complex patterns and less coherence. 5. Major Categories of Lasers
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The geometry of the cavity shapes the spatial and spectral properties of the output beam. mode is the ideal Gaussian beam profile
Using flashlamps or secondary lasers (common in solid-state systems). highest spatial coherence
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