FM mode-locked high-pressure CW RF-excited CO2 waveguidelaser |
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Authors: | Stenersen K Landro S Jensen PI Lovold S |
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Affiliation: | Norwegian Defence Res. Establ., Kjeller; |
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Abstract: | The authors report the results from a study of a FM mode-locked continuous-wave (CW) RF-excited CO2 waveguide laser operated at 0.25-2 atm gas pressures. It is shown that electrooptic FM modulations can be efficiently used to mode lock a CW CO2 laser. The combination of a high gas pressure and a high modulation frequency makes it possible to generate pulses which are substantially shorter than those previously reported for CW mode-locked CO2 lasers. A theoretical approach is used for simulation of the FM mode-locked laser. The experimental pulses of a few hundred picoseconds FWHM are considerably shorter than previously reported for CW mode-locked CO2 lasers. The experimental results are compared with the results of numerical calculations using a frequency domain simulation model |
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