Molter Daniel, Kolano Michael, von Freymann Georg
Opt Express. 2019 Apr 29;27(9):12659-12665. doi: 10.1364/OE.27.012659.
We present a novel terahertz spectroscopy principle by using incoherent light from a super luminescent diode for terahertz cross-correlation spectroscopy. The combless nature of this light source leads to a truly continuous terahertz spectrum. We demonstrate the possibility to influence the terahertz spectral bandwidth of the system by changing the bandwidth of different bandpass filters in the system. Depending on the employed bandpass filter we achieve peak dynamic ranges of 60 dB or a terahertz spectral width of about 1.7 THz. The applicability of the measurement system to spectroscopic terahertz measurement tasks is demonstrated.
我们提出了一种新颖的太赫兹光谱原理，通过使用来自超发光二极管的非相干光进行太赫兹互相关光谱分析。这种光源无梳状谱的特性导致了真正连续的太赫兹光谱。我们证明了通过改变系统中不同带通滤波器的带宽来影响系统太赫兹光谱带宽的可能性。根据所采用的带通滤波器，我们实现了60 dB的峰值动态范围或约1.7 THz的太赫兹光谱宽度。证明了该测量系统在光谱太赫兹测量任务中的适用性。
