| 基于半导体激光器的脉冲整形技术 |
| |
| 引用本文： | 林平,刘百玉,缑永胜,白永林,王博,白晓红,秦君军,朱炳利,杨文正,朱少岚,高存孝,欧阳娴. 基于半导体激光器的脉冲整形技术[J]. 红外与激光工程, 2014, 43(1): 103-107 |
| |
| 作者姓名： | 林平 刘百玉 缑永胜 白永林 王博 白晓红 秦君军 朱炳利 杨文正 朱少岚 高存孝 欧阳娴 |
| |
| 作者单位： | 1.中国科学院西安光学精密机械研究所瞬态光学与光子技术国家重点实验室,陕西西安710119; |
| |
| 基金项目： | 国家自然科学基金(11205238) |
| |
| 摘 要： | 论述一种新的激光脉冲整形方法-利用任意形状的整形电脉冲直接驱动半导体激光器，产生与电脉冲形状一致的激光脉冲， 作为高功率激光装置的种子光源。使用GaAs 场效应管作为开关器件，使用超宽带脉冲触发场效应管产生整形电脉冲，引入阻抗渐变微带技术克服了触发脉冲损耗对级联场效应管数量限制，将整形电脉冲脉冲宽度扩展到10 ns。以整形电脉冲直接驱动半导体激光器，可产生脉宽为10 ns，时域调节精度为330 ps 的任意整形激光脉冲。
|
| 关 键 词： | 激光脉冲整形 GaAs场效应管 开关特性 半导体激光器 阻抗渐变微带技术 |
| 收稿时间： | 2013-05-12 |
Laser pulse shaping technology based on semiconductor laser |
| |
| Affiliation: | 1.State Key Laboratory of Transient Optics and Photonics,Xi'an Institute of Optics and Precision Mechanics,Chinese Academyof Sciences,Xi'an 710119,China;2.University of the Chinese Academy of Sciences,Beijing 100049,China |
| |
| Abstract: | Pulse shaping technique is of great significance for high power laser facility. In this paper, a new method used in laser pulse shaping system was proposed. An arbitrary waveform generator was fabricated to generate shaping electrical pulse. GaAs Field Effect Transistor (FET) has good ability of generating voltage-controlled current and on-off characteristic, while the semiconductor laser contains direct modulate characteristic. The unit-pulse was generated based on the on-off characteristic of GaAs FET, and then the arbitrary waveform electrical pulse was generated by stacking a set of unit-pulses. Impedance tapered micro-strip line was designed to maintain the consistency of each unit-pulse. The arbitrary waveform electrical pulse was used as shaping electrical pulse to modulate the semiconductor laser directly to realize the laser pulse shaping. With this method, a laser pulse waveform was generated with duration less than 10 ns, 330 ps time-domain adjustment. The experiment results show that the shaped laser pulse is determined only by shaping electrical pulse. |
| |
| Keywords: | |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《红外与激光工程》浏览原始摘要信息 |
|
点击此处可从《红外与激光工程》下载免费的PDF全文 |
|
