功率稳定且波长可调谐的窄线宽分布式反馈半导体激光器

发布时间：2018-06-28 08:43

  本文选题：激光器 + 分布式反馈　； 参考：《中国激光》2017年01期

【摘要】：提出一种新型的分布式反馈(DFB)半导体激光器,该激光器具有宽带波长可调谐、线宽窄、功率稳定的特点。该DFB激光器芯片通过采用非对称相移光栅结构,有效地压窄了输出光信号的线宽。基于高精度的温度和电流控制,有效控制激光器内部载流子动态特性与材料折射率,使得激光器输出波长可以实现宽带调谐,并且输出光功率保持稳定。其中,电流控制精度为10μA,温度控制精度为0.004℃,激光器的波长调谐范围为3.5nm,输出光功率为7.4mW,边模抑制比为52.7dB,线宽约为220kHz。该激光器有望应用于可调谐二极管激光吸收光谱(TDLAS)的研究中。
[Abstract]:A novel distributed feedback (DFB) semiconductor laser is proposed, which has the characteristics of tunable broadband wavelength, narrow line width and stable power. The DFB laser chip can effectively reduce the linewidth of the output optical signal by using asymmetric phase-shifted grating structure. Based on the high precision temperature and current control, the dynamic characteristics of carrier and the refractive index of materials are effectively controlled. The output wavelength of the laser can be tuned wideband, and the output optical power is stable. The current control accuracy is 10 渭 A, the temperature control accuracy is 0.004 鈩，

本文编号：2077408