Spectral data used in the paper "Mid-infrared laser heterodyne spectrometer by hollow optical fiber and its newly designed coupler"

<p>//////////</p> <p>GENERAL INFORMATION</p> <p>/////////</p> <p>1. Title of Dataset:</p> <p>MIR hollow optical fiber coupler (HOPC) heterodyne spectral data</p> <p>2. Authors:</p> <p>Hiromu Nakagawa, hiromu.nakagawa.c1@tohoku.ac.jp</p> <p>3. Contact information:</p> <p>Hiromu Nakagawa, hiromu.nakagawa.c1@tohoku.ac.jp</p> <p>4. Measurement dates:</p> <p>&nbsp;</p> <p>/////////////</p> <p>FOLDER &amp; FILE OVERVIEW</p> <p>/////////////</p> <p>There are three data files for spectral data in Figures 6 and 7.</p> <p>(1) &quot;MIR_HOPC_Heterodyne_spectral_data_QCL_Figure6.txt&quot;: The quantum cascade laser (QCL) emission spectral data in Figure 6:</p> <p>The first line is the intermediate frequency, the second line is the relative intensity of the QCL emission spectrum.</p> <p>(2) &quot;MIR_HOPC_Heterodyne_tsys_Figure7_wFiber.txt&quot; and &quot;MIR_HOPC_Heterodyne_tsys_Figure7_woFiber.txt&quot;: The individual spectral data of system noise temperature in Figure 7.</p> <p>The first line is the intermediate frequency, the second and the third lines are the system noise temperature [K] of CO2 gas laser-based heterodyne spectrometer at 10.3 micron led through a hollow fiber (second) and led through in free space (third) in Figure 7.</p> <p>The file name of the individual spectrum includes &quot;w&quot; and &quot;wo&quot;. &quot;w&quot; means the spectral data measured with fiber to led CO2 laser; while, &quot;wo&quot; means the spectral data measured without fiber (free space) to led CO2 laser.</p> <p>&nbsp;</p> <p>/////////////</p> <p>POINT OF ATTENTION</p> <p>/////////////</p> <p>The spectra were taken at the laboratory measurements in Tohoku University, Sendai, Japan.</p> <p>The data in this archive are relevant for the revised manuscript.</p>