Open AccessDemonstration of partially transparent thick metallic sodium in the vacuum ultraviolet spectral range
Author(s) -
Hiroyuki Daido,
Y. Suzuki,
Tetsuya Kawachi,
T. Fukuda,
Toshio Nakagiri,
Masanori Kaku,
Shoichi Kubodera
Publication year - 2013
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.21.028182
Subject(s) - transmittance , optics , materials science , wavelength , molar absorptivity , sodium , ultraviolet , attenuation coefficient , refractive index , optoelectronics , physics , metallurgy
We describe the direct measurement of actual transmittance of sodium samples with thickness of a 2 mm and 3 mm in a spectral range >115 nm, resulting in >50% transmittance of 3 mm thick solid and liquid sodium samples including transmission of a pair of the windows at the wavelength of 120 nm, giving an extinction coefficient of ~10(-6) to ~10(-7) which represents the sodium with a few cm thickness to be partially transparent for this wavelength. To confirm the measurement, we perform simple imaging experiments by the ultra-violet light passing through a 8 mm-thick sodium sample to illuminate a mesh as an object, resulting in obtaining a clear image.