He-Ne laser is a source of coherent monochromatic radiation in the red region of the spectrum.
He-Ne lasers are widely used in:
- construction
- agriculture
- physiotherapy
- ophthalmology
- otolaryngology
- biology
- geodesy
- holography
- metrology
- space
Main technical data and characteristics:
The wavelength of laser radiation | λ = 632.9908 ÷ 632.9916 nm f = 473612522 ÷ 473612043 MHz |
Operating mode | continuous, single-mode |
Radiation power | not less than 0.5·10-3 W |
Relative instability of laser power for 8 hours |
≤ 2% |
Spread of laser radiation (at the level of 0.5), not more than |
0.8·10-3 rad. |
Average resource, not less than | 10000 hours |
Power | 220 V ± 10%, 50 Hz |
The laser is characterized by:
- convenience and reliability in operation;
- great durability;
- high radiation stability;
- capability of operation in a wide range of temperatures and mechanical effects (when the ambient temperature changes from -35º to + 50º), the impact of vibration loads in the frequency range from 5 to 80 Hz, shock loads with an acceleration of 15 g.
The laser emitter (Fig. 1) has a coaxial structure consisting of an invar support tube, two identical adjusting units, an active element with a cold cathode (Fig. 2) and a box of resistors. The optical resonator is formed by spherical mirrors.
