1 February 2006 Effect of buffer gas pressure on the spatiotemporal evolution of small-signal gain in copper vapor laser
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Abstract
We report the effect of buffer gas (neon) pressure on the spatiotemporal small signal gain evolution characteristics of a copper vapor laser (CVL). The CVL discharge tube of diameter 47 mm and length 150 cm is studied for neon pressure from 20 to 70 mbar. The gain evolution is mapped by a specially generated 6-ns, 510.6-nm probe pulse. The evolution of gain at the center and at the edge are found to be widely different for different gas pressures. At lower pressure (20 mbar), the gain at the edge is higher compared to that at the center, however, the situation is reversed at higher pressure (70 mbar). The increased laser-circuit impedance matching and the reduced discharge plasma skin effect with increase in buffer gas pressure are the possible mechanisms responsible for such a changeover.
© (2006) Society of Photo-Optical Instrumentation Engineers (SPIE)
Ramakant Mahakud, Ramakant Mahakud, Om Prakash, Om Prakash, R. Biswal, R. Biswal, S. K. Dixit, S. K. Dixit, } "Effect of buffer gas pressure on the spatiotemporal evolution of small-signal gain in copper vapor laser," Optical Engineering 45(2), 024201 (1 February 2006). https://doi.org/10.1117/1.2172173 . Submission:
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