Research & Develop Of Inntelligent Wide-Band Tunable Laser

In this paper, we have studied the theory and experiment of intelligent wide-band tunable laser around Beijing Natural Science Foundation Proposed Program and developed two testing laser system .In the section of theory, we mainly studied optical parameter effect, discussed physical mechanism of optical parameter laser and normalized coupled wave equation and got the solution. We also carried out the analysis of gain mode of optical parameter oscillation, studied the threshold condition, analyzed output characteristics and then achieved characteristic curve. In addition, we researched the characteristic of nonlinear crystal. An appropriate nonlinear crystal has been chosen through research.In the section of experiment, we focused on the research of optical system of optical parameter oscillation, computer controlling data sampling closed-circuit system and technology of computer controlling feed-back .In the section of optics, we used present condition to do the experiments about optical parameter effect and got a series of characteristic curve on power transition efficiency and output power. In research of intelligent laser, we used difference method to gather data and technology of computer sampling data to design intelligent optical parameter sampling data closed-circuit system. At the same time we based on the high precision tuning mechanism and computer controlling feed-back technology to design PID controller. So, we finished design of closed-circuit controlling system and achieved the goal of sampling and feedback.