Resonance radiation trapping effects in copper and manganese pure metals and their halides as laser materials have been investigated using Holstein’s theory of resonance radiation trapping. Theoretical calculations have been performed for determining the laser-starting and optimum temperatures, and dissociation levels in the metal halides. The results are found to be in excellent agreement with the reported experimental values. A detailed discussion of the results has been presented.

The effects ~f resonance radiation trappi~g of 3248 and 3274 A upon the corresponding laser fluorescent hnes of 5106,5700 and 5782 A of copper have been investigated as a function of temperature in a CuCllaser with and without helium buffer gas. The experimental values of the laser starting temperature at 315 °C and the dissociation level at about 10% in CuCl at resonance radiation trapping threshold are found to be in good agreement with the reported values from calculations.