Green solid-state laser
Diode-pumped frequency-doubled Nd:YAG laser modules offer 532-nm output at powers from 1- to 50-mW CW. The laser is powered by either an optional 110/220-Vac power supply or a 3-Vdc (2 AA) battery. Drive current depends on output power and typically ranges from 600 mA to nearly 1.2 A. Beam diameter is less than 2 mm; divergence is less than 1 mrad.
Roithner Lasertechnik, Vienna, Austria