Electronic Transitions and Bandhead fitting for $^{130}$Te$_{2}$ from 664 to 676THz

The electronic spectra of $^{130}\rm{Te}_{2}$ serves as a wavelength standard for many spectroscopy investigations. The molecule is also of interest for a new gain medium for optically pumped lasers, as well as relativistic investigations of large spin-orbit coupling. We scanned the molecule in the region 664 to 676 THz to create an atlas of transition lines, in line with the previous investigations of $Cariou,\hspace*{1 mm}et\hspace*{1 mm}al$.\footnote{Cariou, J. and Luc, P. ``Atlas Du Spectre D'Absorption De La Molecule De Tellure.'' Laboratoire Aime, Cotton CNRS II 91405 Orsay, France. 1980.} The BO$^{+}_{u}\leftarrow XO^{+}_{g}$ transition was studied in great detail using the precise data for the $X$ band from $Verges,\hspace*{1 mm}et\hspace*{1 mm}al.\hspace*{1 mm}$\footnote{Verges, J. ``The Laser Induced Fluorescence Spectrum of Te$_{2}$ Studied by Fourier Transformation Spectrometry.'' \textit{Physica Scripta}. Vol.25, 338-350, 1982} Using this data, the number of vibrational bandheads was identified allowing the rotational parameters B, D and H to be precisely obtained for each bandhead. These results are combined to obtain the appropriate spectroscopic parameters for the $B_{0}$ electronic band. The results of this investigation will be presented.