Originally Posted by
Exsecratio
RF is the excitation method Paul, RF or DC would be the difference, both are CO2.
RECI is DC exited CW laser (CW=continuous wave). W/o polarization.
CW lasers works like old light-bulbs. Continuous emission without any polarization.
High class DC lasers may have polarised output beam.
RF laser works like high speed stroboscope lamp + polarised output beam.
But some RF lasers have unpolarised beam.
This happens when laser is made using two or more optically coupled resonators.
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