Green Laser Pointers

Green Laser Pointers are much more complicated than a handheld red laser pointer; because the laser diodes in this wavelength range are not as common as the red laser diode.




The green laser pointer beam is generated using an indirect process that begins with a high-power infrared AlGaAs laser diode operating at 808 nm. The 808 nm light energizes a crystal with neodymium-doped yttrium aluminum vanadate (Nd:YVO4).

The Vanadate crystal is coated with a dielectric mirror on the diode side, that reflects at 808 nm and transmits at 1064 nm. The Vanadate crystal is mounted on a copper block to supply sufficient heat loss. The 1064 nm output is directed into a KTP crystal (potassium titanyl phosphate), mounted on a heat sink in the laser cavity resonator.