What do you do when you’ve got three broken function generators ... When [Miroslav] sent in his ‘guerilla homebrew’ square wave generator, we were really impressed. With a relatively ...

There is also a separate higher frequency square wave output that can deliver between 1 MHz and 8 MHz at logic levels. So it’s a capable little function generator, but where is the bad news?

The schematic diagram [Figure (b)] shows that the Stokes beam is modulated with an electro-optic modulator (EOM, M350-160 KD*P, Conoptics) at a couple of MHz by using a square-wave function-generator ...