Figure 5 | Scientific Reports

Figure 5

From: Fourier-transform spectroscopy using an Er-doped fiber femtosecond laser by sweeping the pulse repetition rate

Figure 5

(a) Normalized absorption spectrum (red) of the H13CN cell of 100-Torr pressure (9-GHz absorption linewidth) measured by fr-sweeping FTS. For comparison, another spectrum (inset) is shown of the same H13CN cell measured using a commercial optical spectrum analyzer (OSA) of 8-GHz resolution. (b) Absorptance spectra of P-branch lines of the H13CN cell. (c) Magnified views of absorptance spectra for various sampling window widths (resolutions).

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