What happens if you fire a photon at an atom?

  • Thread starter Thread starter hawaiifiver
  • Start date Start date
  • Tags Tags
    Atom Fire Photon
AI Thread Summary
Firing a photon at an atom can result in two primary outcomes: stimulated emission and absorption. Experiments can be designed to control conditions to isolate these outcomes, a concept frequently utilized in laser technology. Techniques such as STIRAP (Stimulated Raman Adiabatic Passage) and optical pumping are relevant in this context. These methods demonstrate the practical application of manipulating photon interactions with atoms. Understanding these processes is crucial for advancements in quantum optics and related fields.
hawaiifiver
Messages
55
Reaction score
1
I can think of two things. Stimulated Emission and Absorption. Would it be possible to do an experiment where you could control coniditions to allow just these two outomes?

Thanks
 
Science news on Phys.org
hawaiifiver said:
I can think of two things. Stimulated Emission and Absorption. Would it be possible to do an experiment where you could control coniditions to allow just these two outomes?

Thanks


Sure; done all the time. Ever hear of lasers.?


...
 
Creator said:
Sure; done all the time. Ever hear of lasers.?


...

Yes I have discovered a lot of interesting articles about things like STIRAP and optical pumping and so on.
 
Thread 'A quartet of epi-illumination methods'
Well, it took almost 20 years (!!!), but I finally obtained a set of epi-phase microscope objectives (Zeiss). The principles of epi-phase contrast is nearly identical to transillumination phase contrast, but the phase ring is a 1/8 wave retarder rather than a 1/4 wave retarder (because with epi-illumination, the light passes through the ring twice). This method was popular only for a very short period of time before epi-DIC (differential interference contrast) became widely available. So...
I am currently undertaking a research internship where I am modelling the heating of silicon wafers with a 515 nm femtosecond laser. In order to increase the absorption of the laser into the oxide layer on top of the wafer it was suggested we use gold nanoparticles. I was tasked with modelling the optical properties of a 5nm gold nanoparticle, in particular the absorption cross section, using COMSOL Multiphysics. My model seems to be getting correct values for the absorption coefficient and...
Back
Top