- #1
Anton Alice
- 68
- 1
I think I am in a misconception concerning laser beams:
Even the best lasers have a small line width. The spectral line is gauss-shaped. therefore the wave in position-pace is also a gauss-shaped wave packet, that travels with a certain group velocity. But this gauss shaped wave packet has a finite width. Doesnt that mean, that the laser beam has a finite range, which is equal to the width of the wave packet?
Even the best lasers have a small line width. The spectral line is gauss-shaped. therefore the wave in position-pace is also a gauss-shaped wave packet, that travels with a certain group velocity. But this gauss shaped wave packet has a finite width. Doesnt that mean, that the laser beam has a finite range, which is equal to the width of the wave packet?