Search for pulsed generation on indium atom selfterminating transitions

Abstract

Measurements of time integrated spectra of radiation of pulse periodic discharge in mixtures of indium halides InI, InBr, InBr₃ with buffer gases helium and neon and absorption spectra of these halide vapors were carried out aimed at determination of an optimal active medium for a laser on self-terminating transition 6s ²S_1/2->5р ²Р_3/2 of atomic indium with wavelength 451,1 nm in blue spectral range. The pres­ence of indium iodide and bromide oscillatory-resolved bands of X-A, X-B and X-C electronic transitions in absorption spectra is shown. The absorption spectrum of InBr₃ is unstructured. On the base of the absorption studies and other physical and chemical data of indium halides indium bromide is chosen to be a preferable com­pound in the search for the generation.