Abstract

We report a new technique to increase the stability of mode-locked pulses from a TEA-CO2 laser. It consists essentially in the mode locking of a hybrid laser. Moreover, with the low-pressure cw gain cell operating, the pulsewidth varies as α−1.1, where α is the modulation parameter, in contrast to the α−0.5 dependence without the cw gain module. This permits easy tuning of the pulse width between 1.8 and 10 nsec. A model is presented that agrees well with our experimental results.

© 1979 Optical Society of America

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