Hi, Below is a driver circuit for a LASER module I purchased recently, the LASER will be receiving a PWM Audio signal from the output of the comparator, that signal will switch the gate of the MOSFET on/off effectively shorting and unshorting the LASER. There will be an inversion in that the on pulses will become the off pulses - but I don't think this will introduce any problems with the demodulation of the audio as the information is still present. My question is, is this the correct way to drive a LASER? Does anyone have any experience on the subject? I've attempt a couple of other configurations with minor success (i.e. LASER very dim, or noise introduced). The LASER should also be suitable for PWM, i.e. no supporting circuitry to introduce capacitance. Thanks, rueffy.