太赫兹准时域光谱学

Terahertz quasi time domain spectroscopy.

作者信息

Scheller Maik, Koch Martin

机构信息

Institut für Hochfrequenztechnik, Technische Universität Braunschweig, Schleinitzstr. 22, 38106 Braunschweig, Germany.

出版信息

Opt Express. 2009 Sep 28;17(20):17723-33. doi: 10.1364/OE.17.017723.

DOI:10.1364/OE.17.017723

PMID:19907558

Abstract

It is shown theoretically and experimentally that for the specific case of an equidistant frequency spacing of semiconductor laser modes, signals similar to terahertz (THz) time domain spectroscopy (TDS) can be detected in a standard photomixer setup. This quasi TDS system approach enables for both, time and frequency domain data processing. Measurements with a THz system which is based on a low cost multimode laser diode are presented. The system exhibits a bandwidth of 600 GHz and can be applied to the classical THz TDS application scenarios.

摘要

理论和实验表明，对于半导体激光模式等距频率间隔的特定情况，在标准光混频器设置中可以检测到类似于太赫兹（THz）时域光谱（TDS）的信号。这种准TDS系统方法允许进行时域和频域数据处理。本文介绍了基于低成本多模激光二极管的太赫兹系统的测量结果。该系统具有600GHz的带宽，可应用于经典的太赫兹TDS应用场景。