Zygo 7701

Type : Helium-Neon, Continuous, Two-Frequency Wavelength : 632.8nm Beam Power Output : Over 550 microwatts Polarization : Two Orthogonally Linear Beam Diameter : 3mm, 6mm Reference Frequency : 20MHz ± 1600Hz Wavelength Accuracy : ±0.01ppm(24hours) ±0.1ppm(Lifetime) Power Dissipation : +15VDC±0.5VDC(2.5A) -15VDC±0.5VDC(1.2A) Pre-heat Time: > 7 minutes Lead Time : 3 weeks Measurement Range : 25meters(Beam Diameter : 6mm) 2meters(Beam Diameter : 3mm) Warranty : 1 year