Dear readers,
What happens to the divergence values of a laser diode (along and perpendicular to the emitting surface) when the driving current is increased or the output power is increased?
Does the divergence:
Increase along one axis?
Increase along both axes?
Decrease along both axes...
I saw another paper, where they calculate Q-factor for isolated peaks in a random laser. Below is a picture from a paper titled : Random Lasing with a High Quality Factor over the Whole Visible Range Based on Cascade Energy Transfer. They measure bandwidth of 0.05nm at FWHM.
Many papers about random lasers mention the Q-factor of random lasers. Since a random laser has multiple peaks close to each other like shown in the figure. Does each of these peaks correspond to a unique random lasing mode, or is it just a single mode?
Similarly what is the right way to...