The output of a me-4le laser () can be assumed to be Gaussian with plane... · PHYSICS Dataset #8179

Physics · optics

Problem

The output of a me-4le laser (

\lambda=6526 \AA

) can be assumed to be Gaussian with plane phase front. For

w_0=1 \mathrm{~mm}

and

w_0=0.2 \mathrm{~mm}

, calculate the beam diameter at

z=20 \mathrm{~m}

. (b) Repeat the calculation for

\lambda=5000 \AA

and interpret the results physically.