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Beam splitters- Direction of use

there is actually a difference between the two cases other than the diection of the reflected beam. Cube beamslpitters are constructed using two parts glued together using a special cement. The mirror ...
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Is it possible to create a laser pointer with adjustable beam width?

This could be done, but is a little complicated to do well, or economically. The simplest was would for the button press to move a cylindrical lens into the beam, this will give you a line instead of ...
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  • 254
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Why the emitted photon has exactly the same energy,phase and direction as the incident photon in stimulated emission?

the emission is triggered by an incident photon. assumes emission photon has equal energy. Now when electrons fall back to low energy EM wave emitted if we relate this emission due to electron ...
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1 vote

How does stimulated emission work, exactly?

I just don't understand one thing, if photons carry energy, shouldn't the electron be forced to higher excited states? This typically does not happen because the photon usually considered when ...
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