Infrared and Laser Engineering, Volume. 45, Issue 1, 105003(2016)
Research on adjustable narrow pulse driver of laser diode with LDMOS
In this paper a research about adjustable narrow-width pulsed laser diode driver was introduced which is based on the Lateral Double-diffused MOS(LDMOS). Through the analysis of the semiconductor laser driving circuit theory, circuit-level model of RF power transistor was established by using PSPICE simulation software to gain more optimized drive circuit with theoretical calculations. High-speed current-feedback operational amplifier effectively improved the slew rate and the narrow pulse signal frequency response characteristic. The experimental results show that the laser diode driver can generate 2 A current and the pulse width is adjustable from 20 ns to CW, the rise time and fall time are below 10 ns, the pulse repetition frequency is adjustable from 0 to 10 MHz, which demonstrates the feasibility of the design idea to further improve the output performance of semiconductor laser.
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Li Tao, Zhu Lianqing, Liu Feng, Zhang Yinmin. Research on adjustable narrow pulse driver of laser diode with LDMOS[J]. Infrared and Laser Engineering, 2016, 45(1): 105003
Category: 激光器技术
Received: May. 11, 2015
Accepted: Jun. 13, 2015
Published Online: Apr. 5, 2016
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