A Study On The Effect of Using Various Reflectivities of Output Couplers on CW Carbon Dioxide Laser Performance


A practical study has been carried out on axial flow CW CO2 laser bychanging the output coupler with a wide range of reflectivities. ZnSe mirrorswere used in various reflectivities (20, 30, 40, 45, 50, 55, 60, 65, 70,75,80,85,90).It has been found that the output power varies considerably with varies thereflectivity of the output coupler. Thus the optimum reflectivity for 1moptical length and 1cm discharge tube of CW CO2 laser is found to be 65±5%. Our results have been compared with other published data.