Superradiative rare gas halide lasers excited by electric discharge

High repetition rate effects in XeCl tea lasers

“…Therefore the intensity of the discharge induced op tical perturbation and its time evolution can be evaluated from the expression (10) (9) experimental observations, that a lower concentration of Xe and HC1, besides decreasing the breakdown voltage, favours a wider discharge. The slow energy de crease for delays from 40 ms to 10 ms is in agreement with the slow variation of (3(t) and p(t) in this delay range.…”

“…Since for certain applications, for example to injection lock a high energy device, high PRR lasers with high beam quality but relatively low average powers are required [8], some effort has also gone into the understanding and de velopment of high PRR lasers at low [9] or médium [10] power levels without rapid gas flow. These ex periments, investigating the relative weight of thermal and kinetic effects, have demonstrated the feasibility of high PRR operation by merely providing an effec tive cooling of the gas by heat transfer to the cell walls.…”

Gas lasers excited by a pulsed inductive discharge

“…The population inversion on atomic fluorine transitions was created using two excitation methods, a longitudinal electric discharge [13][14][15][16][17] in low-pressure (0.5-50 torr) helium mixtures with fluorinecontaining molecules and a transverse discharge 18,20,21,23 ensuring lasing in the same mixtures in a wide pressure range up to 3 atm. At a low pressures, HF, SF 6 , CF 4 , C 2 F 6 , NF 3 and F 2 molecules were used fluorine as a fluorine donors, while only NF 3 and F 2 molecules were used for high pressures due to the discharge homogeneity achieved using the UV preionisation of the discharge gap. In most available experiments, lasing on fluorine atomic transitions took place in the superluminescence regime.…”

“…These lasers have the radiation wavelengths in the UV range of spectra 193-353 nm and are capable to obtain the radiation with output energy of 1.0 J with efficiency of several percent [4][5][6][7][8] . The typical excitation method for excimer lasers is a transverse discharge with a preionisation of the gas mixture.…”