Paddi Reddy S, Ivancic W, Malathy Devi V, Baldacci A, Narahari Rao K, Mantz A W, Eng R S
Appl Opt. 1979 May 1;18(9):1350-4. doi: 10.1364/AO.18.001350.
A tunable diode laser has been incorporated as a source in an operating high resolution vacuum grating spectrometer. The advantages of such a system for recording molecular spectra have been elaborated. In the process of developing this system, several practical problems came about, and it has been considered useful to document the manner in which they have been resolved. In particular, for work in the region of 15 microm, it was advantageous to develop an air-spaced Fabry-Perot etalon to record fringes simultaneously with the scanning of molecular spectra. This was successfully done, and the upsilon(2) band lines of the HCN molecule at 14 microm have proved to be ideally suited for determining the fringe spacing spectroscopically.
