Reference

A simple and reliable short-pulse dye laser

A simple and reliable short-pulse dye laser. Cubeddu, R.In this study， 87-01-4 and 989-38-8 are also used.; Polloni, R.; Sacchi, C. A. (Cent. Studio Elettron. Quantistica, CNR, Milan, Italy). Appl. Phys., 13(1), 109-10 (English) 1977. CODEN: APHYCC. DOCUMENT TYPE: Journal CA Section: 73 (Spectra by Absorption, Emission, Reflection, or Magnetic Resonance, and Other Optical Properties) A simple technique is described that allows the generation of a short pulse (1 ns) from dye lasers pumped by a much longer (7 ns) N2-laser pulse. Dye-laser pulses, either with a narrow bandwidth or a short duration, can thus be obtained with the same N2-laser pump. .

Synthesis, fluorescence, and photostabilities of 3-(perfluoroalkyl)coumarins

Synthesis, fluorescence, and photostabilities of 3-(perfluoroalkyl)coumarins.Some chemicals with cas registry numbers like 87-01-4 and 91-44-1 are also used. Matsui, Masaki; Shibata, Katsuyoshi; Muramatsu, Hiroshige; Sawada, Hideo; Nakayama, Masaharu (Fac. Eng., Gifu Univ., Gifu 501-11, Japan). Chem. Ber., 125(2), 467-71 (English) 1992. CODEN: CHBEAM. ISSN: 0009-2940. DOCUMENT TYPE: Journal CA Section: 22 (Physical Organic Chemistry) The regioselective reaction of 3-unsubstituted coumarins (I) with bis(perfluoroalkanoyl) peroxides affords 3-(perfluoroalkyl)coumarins (II) in moderate yields. The absorption and emission max. of II show bathochromic shifts compared with I. The fluorescence intensities of II are smaller than those of I. However, the photostabilities of II are higher than those of I. .