Holy crap – green lasers emitting half (or less) of their power on the invisible IR spectrum.
Like a purpose built blinding device. (emphasis mine)
He explains that the paradox of an ostensibly monochromatic source emitting two distinct wavelengths comes from the IR laser at the heart of the diode-pumped solid state (DPSS) laser inside the pointer. The process is only about 48% efficient, meaning that IR leaks out along with the green light. The better quality DPSS laser pointers include a quality IR filter to remove it; cheaper ones often fail to include this essential safety feature.
…and part two:
via Science Shows Green Lasers Might Be More Than You Bargained For | Hackaday
