Spectra-Physics Model 124A 15 mW Helium-Neon Gas Laser provides greater than 15 milliwatts of power at 632.8 nm. A medium power laser, the 124A is ideal for a wide range of laboratory and industrial applications such as holography, photoelasticity, scattering, and Raman spectroscopy.
The plasma tube in the Model 124A incorporates recent developments in cathode design and plasma tube sealing. These advances contribute to substantial improvements in lifetime. Lifetime of the 124A plasma tube will typically exceed 5000 hours.
| Output | Power: | >15 milliwatts at 632.8nm |
| Optional Wavelengths: | 611.8nm, 1150nm, 3391nm | |
| Transverse Mode: | TEM00 | |
| Longitudinal Mode Spacing (C/2L): | 214 MHz | |
| Beam Diameter: | 1.1 millimeters measures at 1/e2 points | |
| Beam Divergence: | 1.0 milliradians | |
| Polarization: | Linear to better than 1 part in 102 | |
| Angle of Polarization: | Oriented vertical to within ±5° | |
| Stability | Long term: | <5% per hour after one hour warmup. Assumes ambien temperature variation less than 10°C. |
| Beam Amplitude Noise (1 to 100kHz) | <0.3% rms | |
| Beam Amplitude Ripple (120 Hz): | <0.2% rms | |
| Environmental Capability | Operating Temperature: | 10°C to 40°C |
| Storage Temperature: | -50°C to + 85°C | |
| Altitude: | Sea level to 10,000 feet | |
| Power Requirements (Model 255 Exciter): | Voltage: | 115v/230v ± 10% |
| Power: | 125 volt-amperes | |
| Mechanical | Dimensions: | Laser: 25lbs |
| Exciter: 7½ lbs | ||
| Cable Length (Exciter to laser): 8 feet |
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