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22 April 2016 The control of CO2 lasing temporal charasteristics by modulated self-injected irradiation
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We suggest using modulated self-injected radiation to achieve lasing regimes similar to Q-switching in a CO2 laser without loss of average output power. The feasibility of this solution is verified both theoretically and experimentally. Our theoretical model of CO2 laser is based on a standard six-temperature model supplemented with terms accounting for self-injection of laser output radiation. We show that temporal modulation of self-injected radiation with power several percent that of the laser output power in external optical systems achieves pulsed-periodical generation regime. The model is experimentally verified using a commercial CO2 laser. With modulation less than 5% of the output power pulsed-periodical lasing was realized. Pulse duration obtained was 300 ns with repetition rate of 20 kHz and power maximum-to-average rate around 20.
© (2016) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
V. V. Kiyko and D. A. Mikhaylov "The control of CO2 lasing temporal charasteristics by modulated self-injected irradiation", Proc. SPIE 9729, High Energy/Average Power Lasers and Intense Beam Applications IX, 97290N (22 April 2016);


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