The principle to obtain low noise laser output is analyzed and a new laser structure and a precise temperature controller are designed to meet the requirement of DVD mastering system.
针对DVD母盘系统对激光的特殊要求，分析了低噪声激光输出的实现原理，设计了合理的激光结构和精确的温度控制系统，以保障低噪声高稳定的蓝色激光输出。
During the work, if the temperature controller is invalid, the excessive heat protect circuit can cut the driving current, and force the laser to stop work to insure the safety of lasers.
在工作中，如果控制激光器温度的温控器失效，恒流源自身的过热保护功能可切断驱动电流，强迫激光器停止工作，确保了激光器的安全使用。
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