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> the green light of a standard green laser pointer is generated from the non-linear interaction of pairs of 1064nm photons. Um, no. It is caused by stimulate
by octoberfranklin 6y ago
> the green light of a standard green laser pointer is generated from the non-linear interaction of pairs of 1064nm photons.
Um, no. It is caused by stimulated emission in the lasing medium, when electrons drop from a higher to lower energy level. Pairs of photons do not interact with each other.
https://en.m.wikipedia.org/wiki/Laser_pumping https://en.m.wikipedia.org/wiki/Laser_pumping
In rare situations you might have an ion or an entire atom changing energy levels. But never just a photon.
https://en.m.wikipedia.org/wiki/Stimulated_emission https://en.m.wikipedia.org/wiki/Stimulated_emission
If you don't believe that photons are bosons I don't think we're going to get anywhere with this discussion...
- nullc 6y ago> It is caused by stimulated emission in the lasing medium, when electrons drop from a higher to lower energy level. In a typical green laser pointer a 1064nm light is produced via ordinary laser mechanisms, then 1064nm light is upconverted in a non-linear medium to 523nm. https://en.wikipedia.org/wiki/Second-harmonic_generation https://en.wikipedia.org/wiki/Second-harmonic_generation Yes, in a medium. You also don't see a lot of conventional computers constructed without semiconductors. :)