tender for purchase of supply of of he-ne laser for cmrg project , he-ne laser • wavelength: 632.8 nm (red) - the classic he-ne laser line. • operating current: 4 - 6 ma (typical) • rated voltage: 220 v ± 22 v, 50 hz mains input (for power supply) • rated input power: 20 w (typical) • output power: 2 - 10 mw (choose based on your illumination needs) • beam quality: tem00 mode, divergence ~1 mrad, beam diameter ~0.8 mm at output (depending on model) • mounting: laser tube + power supply unit (psu) - includes power cord for 220 v mains. • stability: long coherence length, stable output intensity - suited for speckle imaging. • safety: class iiib (for 5 mw) - use safety goggles rated for 632.8 nm.