Fixed angle plane reflective mirrors scanning measurements for laser small signal gain

The principle of a new one dimensional scanning apparatus named fixed angle plane reflective mirrors has been deduced and its optimized parameters of typical scanning distance of 10 cm and 6 cm have been calculated. Based on this scanning apparatus, one dimensional scanning measurement apparatus for chemical laser small signal gain coefficient has been designed and manufactured. The apparatus can embody two aspects, small size and convenience of utility. It can meet the need for continue wave DF/HF chemical laser research. If some improvement is made to the scanning components, the measurement apparatus could be used in CO2 laser and COIL research.