采用同步调谐方法的Littman型可调谐半导体激光器

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采用同步调谐方法的Littman型可调谐半导体激光器

更新时间：2025-07-09

- 采用同步调谐方法的Littman型可调谐半导体激光器
- Issue 10, Pages: 29-33+40(2015)
- 作者机构：
  
  西安交通大学机械制造系统工程国家重点实验室
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN248.4
- Published：2015
- 稿件说明：
移动端阅览
[J]. 2015, (10): 29-33+40.
DOI：

[J]. 2015, (10): 29-33+40. DOI：

摘要

针对采用无镀膜激光二极管的外腔可调谐半导体激光器的跳模现象难以控制的问题

研制了一种采用无镀膜的激光二极管的Littman型外腔可调谐半导体激光器。该激光器通过星型柔性铰链调节反射棱镜的角度

采用带有柔性结构的光栅座调整光栅位置与角度

用粗调与细调旋钮改变激光二极管后端面的位置

利用同步调节激光二极管的注入电流与压电陶瓷驱动电压的方法

通过实验估计确定了激光二极管注入电流与压电陶瓷扫描电压同步调谐比例系数

实现了激光器内外腔纵模同步跟踪

有效避免了跳模的产生。实验结果表明

所研制的Littman型外腔可调谐半导体激光器单纯依靠压电陶瓷电压调谐和二极管注入电流调谐仅能实现约18GHz与60GHz的无跳模调谐

而采用同步调谐的方法实现了105GHz的连续无跳模调谐

频率调谐的扫描频率为20Hz

满足了激光光频扫描干涉测距的应用要求。

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