使用工作波长为15.6微米的脉冲量子级联分布反馈激光器进行化学传感。

Chemical sensing with pulsed QC-DFB lasers operating at 15.6 micrometers.

作者信息

Kosterev A A, Curl R F, Tittel F K, Rochat M, Beck M, Hofstetter D, Faist J

机构信息

Rice Quantum Institute, Rice University, Houston, TX 77251-1892, USA.

出版信息

Appl Phys B. 2002;75(2-3):351-7. doi: 10.1007/s00340-002-0963-z.

DOI:10.1007/s00340-002-0963-z

PMID:12599401

Abstract

Pulsed thermoelectrically cooled QC-DFB lasers operating at 15.6 micrometers were characterized for spectroscopic gas sensing applications. A new method for wavelength scanning based on repetition rate modulation was developed. A non-wavelength-selective pyroelectric detector was incorporated in the sensor configuration giving the advantage of room-temperature operation and low cost. Absorption lines of CO2 and H2O were observed in ambient air, providing information about the concentration of these species.

摘要

对工作波长为15.6微米的脉冲热电冷却量子级联分布反馈激光器进行了表征，用于光谱气体传感应用。开发了一种基于重复频率调制的波长扫描新方法。在传感器配置中加入了一种非波长选择性热释电探测器，具有室温操作和低成本的优点。在环境空气中观察到了二氧化碳和水的吸收线，提供了有关这些物质浓度的信息。