> imagine an AM radio transmitter that transmitted on every frequency of the AM band Forgive my weak physics background, but aren't lasers generally known for

> imagine an AM radio transmitter that transmitted on every frequency of the AM band Forgive my weak physics background, but aren't lasers generally known for having narrow frequency ranges? So if this is just creating white additively using RGB lasers, won't it be more like 3 frequencies, not a full spectral band? It sounds like it's only 'white' from a human standpoint, not a physical one...