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

Injection mode locking of a TEA CO₂ laser on P and R transitions in the 9- and 10-μm bands

P. E. Dyer and I. K. Perera
Opt. Lett. 4(8) 250-252 (1979)

Striated filamentary sparks produced by a CO₂ TEA laser

Robert W. Schmieder
Opt. Lett. 4(11) 369-371 (1979)

Synchronous, mode-locked pumping of gas lasers

S. H. Lee, S. J. Petuchowski, A. T. Rosenberger, and T. A. DeTemple
Opt. Lett. 4(1) 6-8 (1979)

20-J nanosecond-pulse CO₂ laser system based on an injection-mode-locked oscillator

V. V. Apollonov, P. B. Corkum, R. S. Taylor, A. J. Alcock, and H. A. Baldis
Opt. Lett. 5(8) 333-335 (1980)

Selective-absorption cross section of CF₃CHCl₂ and CF₃CDCl₂ at 10.2 and 10.6 μm of a TEA CO₂ laser

S. L. Chin and G. Boisclair
Opt. Lett. 4(10) 340-341 (1979)