Abstract
The evolution of the intensity profile of TEA CO2 laser pulses along the pulse length is investigated both analytically and experimentally. A simple scalar model of the pulse amplitude is introduced, which gives the loaded-cavity modes as a linear combination of bidimensional Hermite-Gauss functions. According to this model a number of equations are derived which link the time-varying spatial structure of the pulse to its time-resolved second-order intensity moments, namely, the beam width and the M2 parameter.
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Martínez, C., Serna, J., Encinas-Sanz, F. et al. Time-resolved spatial structure of TEA CO2 laser pulses. Optical and Quantum Electronics 32, 17–30 (2000). https://doi.org/10.1023/A:1007033113828
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DOI: https://doi.org/10.1023/A:1007033113828