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Mody, divergence,obří impulzy.pdf - FBMI

Mody, divergence,obří impulzy.pdf - FBMI

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VELIKOST STOPY<br />

Poloměr spotu po fokuzaci svazku čočkou<br />

pro TEM 00<br />

w 0 = f . q f- ohnisková vzdálenost<br />

q- <strong>divergence</strong> svazku<br />

Příklad : f = 0,5 m, q = 1 mrad<br />

w 0 = 0,5 x 1 = 0,5 mm<br />

f = 0,5 m, q = 0,11 mrad<br />

w 0 = 0,5 x 0,11 = 0,055 mm = 55 mm

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