- Sep 20, 2013
Is this something you know for a fact or are you just assuming they cannot be modulated at 38 Khz? I have modulated them at 5 KHz and know that they can certainly do that. Where is the cutoff if 38 KHz is too high? It is certainly above 5 KHz.It's not lag as such. These DPSS lasers average out rapidly changing power levels of 808 nm light going into then, and the actual solid state laser makes them too slow to transmist 38 kHz signals.
Any LED or direct lasser diode would have no problem with this, probably you can modulate those into the gigahertz range as they do in fibre optics for internet connections