  In chirped pulse experiments, magnitude Fourier transform is used to generate
frequency domain spectra. The application of window function as a tool for
lineshape correction and signal-to-noise ratio (SnR) enhancement is rarely
discussed in chirped spectroscopy, with the only exception of using
Kaiser-Bessel window and trivial rectangular window. We present a specific
window function, called "Voigt-1D" window, designed for chirped pulse
spectroscopy. The window function corrects the magnitude Fourier-transform
spectra to Voigt lineshape, and offers wide tunability to control the SnR and
lineshape of the final spectral lines. We derived the mathematical properties
of the window function, and evaluated the performance of the window function in
comparison to the Kaiser-Bessel window on experimental and simulated data sets.
Our result shows that, compared with un-windowed spectra, the Voigt-1D window
is able to produce 100 % SnR enhancement on average.
