Low-temperature study of lasing characteristics for 1.3-μm AlGaInAs quantum-well laser pumped by an actively Q-switched Nd:YAG laser

We report a low-temperature 1.3 mu m AlGaInAs quantum-well laser pumped by a 1.06 mu m active Q-switched laser quenched by a low-temperature vacuum system. An average power of 330mW is achieved at temperature as low as 233K compared to the average power of 50mW obtained at room-temperature without cooling device both at pumping repetition rate of 30 kHz. And the average rate of gain peak shift was found to be 0.47 nm/K between 293-133 K.