Study for pumping intensity distribution in double-arched LDA side-pumped Nd:YAG laser based on gauss model

The pumping uniformity of double-arched laser arrays side-pumped Nd:YAG laser was reported. The perfect matching of the gain field inside of the crystal and fundamental mode of cavity was made by this structure. The pump light deposition in solid state laser materials side pumped by laser diode arrays was analysed and numerically calculated using the propagating and transforming low of gauss beam through variety of optical media, with optical matrix method. With computer modelling and experimental test, the pumping uniformity characteristics in double-arched laser diode arrays side-pumped Nd:YAG were studied. It was proved that laser output energy and laser beam quality were improved as long as the proper pumping parameters was chosen in the side-pumping method. The experiment results illustrate that the theoretical models are correct.