These are good used, hard sealed laser tubes for your OEM, replacement, or experimental needs. Other types of tubes may be available. Please email us for more information. Specifications: Output Power: 4.0 mW minimum 4.5 mW typical Wavelength: 632.8 nm RED Polarization: Linear 500:1, (random may be available, please call or email for availability) Mode: TEMoo Beam Diameter: 0.80 mm Beam Divergence: 1.0 mRads. Light Exit: Cathode end of tube. Operating Voltage: 2390 VDC (with 75K ballast). Start Voltage: 10KV. Operating Current Range: 6 to 7 mA, 6.5 mA Ideal. Recommended Ballast Resistor: 75K Ohms, 5 Watt. (Add in series to the anode lead within 3″ of the tube.) Recommended Power Supply: DG-22, E-21, LAB-S-22. Dimensions: 13.8″ long x 1.45″ diameter. Warranty: Limited 30 days from date of purchase.
