| Title |
The Slab Waveguide CO_2 Laser with Unstable Resonator of Negative Branch |
| Keywords |
slab ; CO_2 laser ; waveguide ; radio frequency |
| Abstract |
We have developed the radio frequency excited slab waveguide CO_2 laser, The dimension of active area is 2×40×400 mm to get a laser gain. Two pieces of concave mirror are used to make the unstable resonator of negative branch. The radio frequency is 123 MHz and RF input power is from 100 to 900 W. The laser gas is set to a pressure of 10 ∼ 60 torr and the mixing ration is CO_2:N_2:He=1:1:3. The laser output power of 50.9 W was obtained with laser power to RF power efficiency of 6.5 %. |