Recent content by Vajhe

Oh, I was looking the answer in the wrong place: I will have to remove the dust from my Sakurai. Thanks a lot!

Hi, I have been reading the Milonni and Eberly book "Laser": in one of the chapters they discuss the Oscillator Model. The treatment is quite straightforward, the Hamiltonian of the process is H=H0+HI where the first term is the "undisturbed" hamiltonian, and the second one is the interaction...

Hi, I have a problem that I'm trying to solve and I'm not sure at all how can I proceed. If we have a metal rectangle (or maybe a rectangle-shaped hole in a piece metal), and we stretch this body a small distance, what is the shape of the top and bottom lines of the body? Can we say it is a...

Well, z is the third component of the position. The author explicitly puts it there, but I don't find why. And actually, I think that the formulas for the FT of derivatives will take me to the answer, but I'm still working on it. I really appreciate the hint (I was very, very stuck). Let's...

Hi guys, I have been trying to solve the Helmholtz equation with no luck at all; I'm following the procedure found in "Engineering Optics with MATLAB" by Poon and Kim, it goes something like this: Homework Statement Homework Equations Let's start with Helmholtz eq. for the complex amplitude ##...

Hi, I'm (almost) a Bachelor in Physics so I wanted to be part of this great commmunity on the Internet; perhaps I could learn something in the process, or maybe I can contribute something to anyone in doubt!