The dataset contains the following files

Data analysis scripts
scripts.zip
MATLAB 2017a scripts to generate each figure in the manuscript

Direct transmission spectroscopy through methanol
methanol-absorbance.dat
Single pass through gas cell; THz power measured using pyroelectric detector
column1 = QCL Current [mA]
column2 = detector signal (1 Torr methanol) [mV]
column3 = detector signal (vacuum) [mV]"

Simulated absorption spectrum of methanol
absorption.dat
Single pass through gas cell; THz power measured using pyroelectric detector
column1 = frequency [GHz]
column2 = absorption coefficient [1/cm]"

Self-mixing interferograms:
Filenames contain QCL current [mA]
/forward and /reverse subfolders denote direction of optical delay stage motion
column1 = stage position [mm]
column2 = self-mixing voltage [mV]"
Self-mixing interferograms: 400mTorr methanol: 400mTorr.zip
Self-mixing interferograms: 700mTorr methanol: 700mTorr.zip
Self-mixing interferograms: 1100mTorr methanol: 1100mTorr.zip
Self-mixing interferograms: 1100mTorr methanol, over full current range: 1100mTorr-full-scan.zip
Self-mixing interferograms: empty gas cell: vacuum.zip
Self-mixing interferograms: empty gas cell, over full current range: vacuum-full-scan.zip