Below is the laser color displaying in different wavelength. In Lanling laser catalogue, the normal wavelength is for the RGB laser color as folllows:
(1) violet 405nm, purple blue 445nm-450nm, pure blue 473nm
(2) green 532nm
(3) red 637nm and 640nm in small perfect beam diameter, red 650nm in small/square beam diameter.


Below is on how the red, green and blue laser to be put together in the laser show systems. It is the basic knowledge that laser show system has maximum 3 laser modules (red, green and blue). Yellow, magenta/pink, cyan and white are the mixed color.