Photonic Devices Laser Beam Expanders for CO2 Laser (10.6um) 06GBE17 06GBE17 series Galiean Laser Beam Expanders with a 17mm exit aperture for use with CO2 lasers (10.6um) 2.25X , 2.5X, 3X   06GBE36 06GBE36 series Galiean Laser Beam Expanders with a 36mm exit aperture for use with CO2 lasers (10.6um) 6X   06GBE20 06GBE20 series Galiean Laser Beam Expanders with a 20mm exit aperture for use with CO2 lasers (10.6um) 3.75X