A simple package the loads and processes 2DIR data from a 128 x 128 pixel mercury cadmium telluride (MCT) infrared detector.
File naming convention is as follows:
<file_prefix>_<#######>fs_##.2DIR
where file_prefix is the prefix of the file name, ####### is the delay time between the two pump pulses in femtoseconds, and ## is the spectrum number at
that delay time. The extension is .2DIR, but
the files are simple text files and this extension
is an optional argument and can be modified by the user.
The pixel number is a global constant, PIXELS, and is set to 128.
The result is stored in the type Spectra,
which includes
- frequecy in wavenumbers
- pump-probe spectra (on, off, and difference)
- 2DIR spectra at each delay time
The frequency will need to be further calibrated and the second axis frequencies will need to be calculated to produce a 2D plot.
Results can be retrieved in three lines if the calibration constants are known:
using Process2DIR
result = process_2dir(dir, fileprefix, f0_shift)
ω1 = calibrate_frequency(result.frequency, cal1, cal2, shift1)
ω3 = calibrate_frequency(result.frequency, cal3, cal4, shift2)
Then plot using result.spectra[:, :, i], where i is the index for each 2DIR spectrum.