The Verdi G12/G15/G18/G20 from Coherent Corp. is a Laser with Wavelength 532 nm, Power 12 to 20 W, Output Power (CW) 12 to 20 W, Operating Temperature 10 to 40 Degree C, Storage Temperature -10 to 60 Degree C. More details for Verdi G12/G15/G18/G20 can be seen below.