Hi all, after tribulations with HV opamps and leaky inductors, my diode laser seems to be happy again. Here's a scan of the laser through a Fabry-Perot confocal cavity. (F-P FSR ~ 380 MHz, finesse > 100.)
I put 10 MHz side bands on the laser to give a scale. Looking at the 'scope shot would I be safe in claiming1 MHz (or better) of laser bandwidth?
Thanks... this is mostly a question of estimating noise from a 'scope shot.