In this peper, the properties of a Cu-Ne-HBr laser have been studied by varyingoperation parameters, such as gas pressure, pulse repetition rate, and input electricalPOwer. The Parametric relation has been measured and the role of HBr gas in the Cu Ne-HBr laser is analysed briefly. Experimental results show that at lower discharge voltage (<2 kV) and mixed gas pressure ratio of about 15:1 (Ne:HBr) the optimum pulse repetitionrate is 20 kHz and the optimum pressure is 2.66 kpa, respectively.