The control of CO2 lasing temporal characteristics by modulated self-injected irradiation

V. V. Kiyko; D. A. Mikhaylov

doi:10.1117/12.2214485

22 April 2016 The control of CO₂ lasing temporal charasteristics by modulated self-injected irradiation

V. V. Kiyko, D. A. Mikhaylov

Proceedings Volume 9729, High Energy/Average Power Lasers and Intense Beam Applications IX; 97290N (2016) https://doi.org/10.1117/12.2214485
Event: SPIE LASE, 2016, San Francisco, California, United States

Abstract

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.

Citation Download Citation

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); https://doi.org/10.1117/12.2214485

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