Like I said earlier. It's working now, I just need a different wavelength laser. I am currently looking at higher wavelength diode lasers because I'm interested in upconversion as well.
Naw, it's definitely luminescence. I tried other samples and only got raman signal. And I am operating a HeNe laser at 632.8nm. I also know where all the plasma lines are, so no issues, just a weird sample.
Exactly what the title says.
I know that there exists a selection rule that ΔS=0, but I cannot find a quantum mechanical explanation for these transitions being forbidden. I know that it has something to do with the electric dipole, but I have not been able to find anything explicit.
In...
I know this is kind of old, but you may want the help anyway.
A metastable state occurs when an excited state cannot make the transition back to the ground state because one of the selection rules forbid it. I haven't worked it out exactly, but it is likely that the transition from your...
Thanks a bunch! After having a good think about it, it all makes perfect sense now and I now know exactly how the s_1z-s_2z operator works. I will post how it relates to spin orbit coupling and singlet triplet mixing a little later once I have written it out in an understandable manner.
Dunno if anyone will ever read this... but I discovered what my problem was. The fiberoptics were a bad idea. They spread out the light too much for a good raman signal. I am thinking that in order to use fiberoptics for raman, it would be necessary to have a very small FO to preserve beam...
Yes! That definitely will help me on my way. Unfortunately, I am still having some difficulty.
This is the part that is giving me trouble.
s_z|+\rangle ⊗ 1|+\rangle
When I took a quantum class we never used the +/- notation, we were trained with α and β, but it seems that most modern...
Hey guys!
I am trying to show how singlet and triplet states mix via spin-orbit coupling, but I am having some trouble.
I've gotten most of the way through, but I am stuck on how an operator works. Sadly, I think my poor basis in quantum is going to show right here.
My starting point...
I'm currently updating an old raman spectrometer that had fallen out of alignment requiring some modifications to its design.
I have attached an image of what it currently looks like. I am using a HeNe laser which is directed into a bifurcated fiberoptic. The combined end is pointed at my...
Homework Statement
Let ψ(r)= c_n ϕ_n (r) + c_m ϕ_m (r) where ϕ_n(r) and ϕ_m (r) are independent functions.
Show that the condition that  is Hermitian leads to
∫ψ_m (r)^* Âψ_n (r)dr = ∫Â^* ψ_m (r)^* ψ_n (r)dr
Homework Equations
∫ψ(r)^*  ψ(r)dr = ∫Â^* ψ(r)^* ψ(r)dr
The Attempt...