Seufert J, Fischer M, Legge M, Koeth J, Werner R, Kamp M, Forchel A
Nanoplus Nanosystems and Technologies GmbH, Oberer Kirschberg 4, D-97218 Gerbrunn, Germany.
Spectrochim Acta A Mol Biomol Spectrosc. 2004 Dec;60(14):3243-7. doi: 10.1016/j.saa.2003.11.043.
We present a novel device technology to produce DFB laser diodes which are suitable for tunable diode laser spectroscopy. The new technological approach employs lateral metal distributed feedback (DFB) gratings in close proximity to the laser ridge which results in single mode emission with high spectral purity and output powers as required for most spectroscopic applications. Over the entire wavelength range from the visible (760 nm) up to the near-infrared (2.5 microm) single mode emission can be obtained for devices based on different semiconductor systems such as GaAs, InP and GaSb. Typical side mode suppression ratios are better than 35 dB for cw-room temperature operation and narrow linewidths ensure high spectroscopic resolution.
我们提出了一种用于生产适用于可调谐二极管激光光谱学的分布反馈（DFB）激光二极管的新型器件技术。这种新技术方法采用了紧邻激光脊的横向金属分布反馈（DFB）光栅，从而实现了具有高光谱纯度的单模发射以及大多数光谱应用所需的输出功率。对于基于不同半导体系统（如砷化镓、磷化铟和锑化镓）的器件，在从可见光（760纳米）到近红外（2.5微米）的整个波长范围内都能获得单模发射。对于连续波室温运行，典型的边模抑制比优于35分贝，窄线宽确保了高光谱分辨率。
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