1, the wavelength is not the same
Green light wavelength is large; blue light wavelength is small.
2, energy is not the same
Green light contains large energy; blue light contains small energy
3, different areas of application
Green laser has the effect of improving the function of blood leukocytes, T-lymphocytes, and increase the total number of red blood cells, and there are prospects for application in the clinic;
Blue laser is used in telecommunications, information technology, environmental monitoring, electronic equipment, medical diagnosis, micro-projectors and monitors, etc.
Green laser and blue laser light-emitting principle:
The two light-emitting principle is the same, the principle is generated by the atom (or molecule, ion, etc.) leap, and is caused by spontaneous radiation. The laser depends on spontaneous radiation only for a very short time initially, and thereafter the process is entirely determined by excited radiation.
It is this that gives lasers their very pure color, their almost divergence-free directionality, and their extremely high luminous intensity. And it is these amazing properties that give lasers a range of incredible and compelling applications in a variety of fields.
Baidu Encyclopedia - Green Laser
Baidu Encyclopedia - Laser