Monday, June 11, 2012

#15 Laser

Q1: 3+183+20=206 for this specific moment. Other moments also shows conservation.

Q2: There is no preferred direction for which the photon goes.

Q3:  Although most of them emitted at the beginning, there can be a few atoms remaining in its exited states for a long time,so the time is not constant.

Q4: When the photon interact with the excited atom, the atom emits another photon that is in the same direction and same phase as the incoming photon.

Q5: 70 might be a good guess because it varies from 8:12 to 12:8 nearly all the time.

Q6: The odd direction photons are in spontaneous emission originally, but these photons sometimes interact with another exited photon thus causing a stimulated emission of photons.
  



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