Lasers

He Ne laser Thorlabs, wavelengths in the range

Wavelength: 632.991 nm (Vacuum)
Stabilized Power: >1.2 mW
Polarization: Linear >1000:1
Mode Structure: TEM00 >99%
Beam Diameter: 0.7 mm
Beam Divergenc: 1.25 mrad
Beam Drifta: <0.2 mrad
Long-Term Beam Drift: <0.05 mrad
Power Input: AC Universal (120/240 VAC)
Lifetime (Typ.): 25,000 h