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Light Amplification by Stimulated Emission of Radiation. A means of creating coherent light by either driving an atomic or molecular transition in an optical cavity or firing a beam of electrons through an undulator.
1
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How does an attenuator inside a polarization interferometer change polarization?
If you think about the extreme case where the attenuator blocks all of the horizontal then the output of the second PBS is V. When there is no attenuation it is 45°. For attenuation between these the …
0
votes
Can there be multiple shot noise sources? For example: laser & camera
So for a given time interval the laser will have a mean photon number, that is the average number of photons present in a pulse that is of that interval. …
1
vote
Accepted
How does one get this steady-state solution?
Here is my solution:
Start from the equation
$$\dot{\rho}_{ab} = -(i\omega + \gamma)\rho_{ab} - i(\rho_{aa} - \rho_{bb})A(t) \wp u(z) / \hbar.$$
The solution to this for $\rho_{ab}$ can be found by fi …
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votes
How to implement a very precise polarizer inside a fiber-based setup?
I'm not sure on the purpose but you can use a QWP & Liquid crystal configuration as a controllable polarisation rotator (look it up). Instead of the liquid crystal you could use any birifringent mater …