%0 Journal Article %T TWO PHOTON TRANSITIONS IN THE OPTOGALVANIC SPECTRUM OF NEON %J Journal of Sciences, Islamic Republic of Iran %I University of Tehran %Z 1016-1104 %D 1993 %\ 12/01/1993 %V 4 %N 4 %P - %! TWO PHOTON TRANSITIONS IN THE OPTOGALVANIC SPECTRUM OF NEON %R %X Seventeen two-photon transitions for neon have been observed in the 580- 635 nm spectral region for use in the spectroscopic study of its higher excited levels, which are not accessible by one-photon absorption. To compare the two and one-photon absorption signals originating from the same lower level, an effort was made to record single-photon optogalvanic spectrum in the available wavelength region. The dependence of optogalvanic signals on the laser power has also been studied. The optogalvanic signals were obtained from a commercial neon-filled, hollow-cathode lamp, which was irradiated with pulsed dye laser pumped with N laser %U https://jsciences.ut.ac.ir/article_31292_d648ae0e53dd323b348c3b52539f6d9b.pdf