Measurements of the small-signal gain and saturation intensity for a cw CO₂laser using an intracavity loss element

Innovative extracting of optimum operational diagrams for a CW sealed CO2 laser based on the evolutionary genetic algorithm

“…The parameters of 1 (= = 1 − ) and 2 (= 1) are front and back mirror reflectance, which T is transmittance of the front partial mirror, and d is tube internal diameter. The parameters of 0 and are small signal gain and saturation intensity of the sealed medium of a CW CO 2 laser, respectively (Cheng et al, 2001) which are less than that of gas flow system (Aram, Soltanmoradi, Ghafori, & Behjat, 2005). The other parameters, and are defined as diffractive transmission of the two side apertures of the tube (Verdeyen, 1995) and and are beam size at the tube ends (Milonni & Eberly, 2010).…”

An Innovative Simple Method for Study of the Characteristics of the Trigatron Plasma Switch

“…The trigatron switches [1,2], have a wide variety applications as a high power switch in PFN (Pulse Forming Network) of pulsed gas lasers [3][4][5], Z pintch based soft x-ray lasers [6] and particle accelerators [7]. Trigatron switch, like thyratron, has two main electrodes and one triggering (or fire) electrode but the ambient-gas-pressure in trigatron switch is much higher than thyratron in a way that the working operation of trigatron is in the rightbranch of Paschen-curve and also very far from to the minimum of the curve.…”

Intra-Cavity Loss Element Method for Measurement of the Small Signal Gain of a TEA CO2 Laser

“…Cheo, 1968;Tulip, 1970) at different wavelengths (Dang, Reid, & Garside, 1980;Sato & Miura, 1983) and for a TEA CO 2 laser (PK Cheo, 1967;Nath & Biswas, 1997) The intra-cavity variable loss element is easier to apply relative to the other one, whereas the measurement of the g 0 is only desired. We have been successfully used this method for measurement of 0 of a CW CO 2 laser earlier (Aram, Soltanmoradi, Ghafori, & Behjat, 2005). To our knowledge, only one report is available on a rare gas Halide pulsed laser based on using an intra-cavity variable absorption gas cell loss element (Armandillo, Kearsley, & Webb, 2000).…”