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半导体激光器是实用中最重要的一类激光器，它具有可直接调制的特点。本文介绍了一种简单有效的半导体激光器调制电路，给出了电路原理图，元件的选择原则，最后介绍了在非合作目标相位式激光测距系统中实现正弦调制的应用。
Semiconductor lasers are one of the most important types of lasers in practical use and have the characteristic of direct modulation. In this paper, a simple and effective semiconductor laser modulation circuit is introduced. The principle of the circuit and the selection principle of the components are given. Finally, the application of sinusoidal modulation in the non-cooperative target phase laser ranging system is introduced.