I am not a laser expert, but maybe this helps. The pictures are describing somewhat different processes. The CO2 laser is a four level system:
v0: ground state
v1: symmetric vibrational mode
v2: bending mode
v3: anti-symmetric vibrational mode
In the CO2 laser you have a lasing from the...
Excellent question !
Well. we not entirely ready for a complete extension ... but the momentum operator is a great start. consider the angular momentum which is the cross product of the position vector and the linear momentum vector. Let's try to work out the anglar momentum operator (now in...
I don't see Diracs old view as being invalid - he was after all one of the founding fathers of the theory (advertise for Ballentine as you may). Canonical quantization appears in many textbooks, and in my view, it is an equivalent expression of the symmetry approach.
It seems that you have...
Hello - Yes I actually did this and it was not too bad. You might find yourself trying to catch up in certain areas depending on what area of EE you are looking at going into. If you go into microtechnology and nanoscience, you will undoubtably find a high degree of crossover between your EE...
As the others have pointed out, the notion of an operator is axiomatic to quantum mechanics. This is not very satisfing though. The axiomaticness can be motivated though. Consider the equation for a plane wave in one dimension.
\psi(x,t) = e^{i (kx + \omega t)}
Now I would like to...
To me this is more of a philosophical question than a quantitative one. I think that the question here is valid - namely that we should always more or less be checking the consistency of our thinking. Ineed, "quantum theory" is really a collective term which describes a set of mathematical...
Hello Physics Forums.
I am looking at finishing my Ph.D. here within the next year or so. I am looking to continue in academic work. My PhD work has mostly been directed deeper into physics (semiconductor and 2D materials) despite being in the EE department (there is a lot of need for basic...