eneacasucci's latest activity

thank you so much for your time. The example was clear, but in a Fabry–Perot interferometer (also called an étalon) we change the...

What I find hard to visualise is the fact that in the spectrum there are different Rayleigh peaks but they represent the same laser...

They're different things. In the mechanical scan you're holding the wavelength constant and varying the cavity length, while in the...

Thanks for the answer. The distinction of holding different parameters fixed is clear to me now. However, I am still confused about why...

I am analyzing data from a Brillouin spectroscopy experiment using a scanning Fabry-Pérot Interferometer (FPI). The source is a...

How? What wave? Have you ever seen how we quantize the electromagnetic field to get photons? It is the same idea, photons might be real...

I was referring to the collective lattice displacement field (the deviation of atoms from equilibrium).The reason I phrased it as 'the...

Indeed, in Kittel's discussion of phonons, it states: "A phonon of wavevector ##\mathbf{k}## will interact with particles such as...

You are right it is a short hand to avoid "excitation of mode ##\omega,\mathbf k##". But in second quantization treatment, this is...

I am currently reading Kittel's Introduction to Solid State Physics and am confused by the terminology regarding phonons. On page 99...