Example dataset for the software parrot

These sample files are in HDF-5 format and each contains three arrays named "time", "position", and "signal".

The files were recorded in a Terahertz-Time Domain Spectroscopy (THz-TDS) setup with an oscillating delay line (APE ScanDelay) and a continuous recording scheme.

Each file has approximately 1 min of recording time with a time step of 2e-5 s.

One of the three files is called "light.h5", where the data is recorded with active THz emission.

The other two files are so-called "dark" files, where the THz emission is disabled, but all other settings are the same, in particular the probe beam is still active.

The parrot software splits and averages continuously recorded THz data and can compensate for systematic offsets of the THz TDS when provided with the corresponding dark traces. Furthermore, an algorithm is implemented in parrot which allows to compensate possible phase shifts between position and signal data by using cross-correlation methods of the THz signal itself (which is recorded in forward and backward motion).

本数据集的样本文件均采用HDF-5格式存储，每份文件均包含三个数组，分别命名为"time"、"position"与"signal"。

所有文件均在太赫兹时域光谱（Terahertz-Time Domain Spectroscopy，THz-TDS）测试装置中录制得到，该装置搭载振荡式延迟线（APE ScanDelay）并采用连续录制模式。

每份文件的录制时长约为1分钟，时间步长为2×10^-5秒。

三份文件中的一份名为"light.h5"，其数据采集于THz发射激活的状态下。

其余两份文件为所谓的“暗态（dark）”文件：此时THz发射处于关闭状态，但其余所有实验参数均保持一致，尤其探测光束仍处于激活状态。

Parrot软件可对连续录制的THz数据进行拆分与平均处理，且在输入对应暗态数据轨迹后，能够补偿THz-TDS系统的系统性偏移。此外，该软件内置一款算法：通过利用THz信号自身的互相关方法（该信号在往复运动中录制得到），可补偿位置与信号数据间可能存在的相位偏移。