The modem concept of light such as diode laser contains elements of both Newton's and Huygens' descriptions. Light is said to have a dual nature. Certain phenomena, such as interference, exhibit the wave character of light. Other phenomena, the photoelectric effect, for example, display the particle aspect of light. In this study, the process and its application of a self-built diode laser are discussed. In additional, the influence of laser diode circulating temperature to emitting power is interposed. And its transferring model is established for further research.