It is now possible to display directly the waist and position of the waist once a fundamental Gaussian beam is fitted. Starting with a Gaussian beam: We can now choose to display the waist of the beam: A negative waist position indicates the beam is focusing and so as we propagate the beam will be […]
Intrinsically in FFT code, the Gouy phase is automatically calculated. For design purpose, we would like to calculate the accumulated Gouy phase as the beam propagates. The function attached calculates the Gouy phase of a TEM00 beam for a propagation length defined by the user. The principle behind it is to calculate the phase of […]
The indico page for the meeting is there and the OSCAR presentation here.
I have defined my cavity but when I do a scan over one FSR, I can see the presence of some second order modes. Or when I look at the reflected power, I can see a mode LG10 or I do not have the maximum power gain. All that may indicate that the mode matching […]
First the beam size must be large enough to never clip the laser beam, at any distance in the simulation. For example the grid size must be 5 times the largest beam radius. The second point, if the clipping losses are important is to have the grid size larger than the largest aperture in the […]