The Experts below are selected from a list of 84 Experts worldwide ranked by ideXlab platform
Kazuyuki Hirao - One of the best experts on this subject based on the ideXlab platform.
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room temperature persistent spectra Hole burning in sm2 doped silicate glasses prepared by the sol gel process
Applied Physics Letters, 1995Co-Authors: Masayuki Nogami, Kazuyuki HiraoAbstract:Persistent spectra Hole burning is observed at room temperature in the excitation spectrum for the 7F0→5D0 transition of the Sm2+ ions that are doped in aluminosilicate glass. Glass having the composition of Sm2+‐doped Al2O3⋅9SiO2 has been prepared by the sol‐gel processing of metal alkoxides and the reaction with H2 gas at 800 °C. Sol‐gel derived glass enables Sm to be doped in the Sm2+ state of which the 4f6 (7F0)→4f55d band does not overlap with the 5D0→7F0 line. The Hole Width and depth, which are burned by the DCM dye laser, are ∼15 cm−1 and ∼10% of the total intensity, respectively, at 20 °C.
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room temperature persistent Hole burning of sm 2 in oxide glasses
Optics Letters, 1993Co-Authors: Kazuyuki Hirao, Shinichi Todoroki, Naohiro SogaAbstract:Persistent spectral Hole burning in Sm2+-doped borate glasses is observed at room temperature. The possible number of Holes is approximately five times larger than in halide glass systems because of the larger inhomogeneous lineWidth and smaller Hole Width of borate glass. In this system the photoionization of trapping electrons other than Sm ions at a site is likely to be dominant because of the absence of an antiHole adjacent to the Hole.
Masayuki Nogami - One of the best experts on this subject based on the ideXlab platform.
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high temperature persistent spectral Hole burning of eu3 doped sio2 glass prepared by the sol gel process
Applied Physics Letters, 1997Co-Authors: Masayuki Nogami, Yoshihiro AbeAbstract:Persistent spectral Hole burning was observed at temperatures higher than 77 K in SiO2 glass doped with the Eu3+ ions. The Eu3+-doped SiO2 glass was prepared using the sol-gel process of Si(OC2H5)4 and EuCl3⋅6H2O. A persistent spectral Hole was burned in the excitation spectrum of the 7F0→5D0 transition of Eu3+ using a Rhodamine 6G dye laser, of which the Hole Width and depth were 1.6 cm−1 and ∼20% of the total intensity, respectively, at 77 K. Hole depth decreased with increasing temperature and disappeared above ∼130 K. A possible mechanism for the Hole burning is related to the local structure around Eu3+ and the residual OH and H2O in the glass.
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room temperature persistent spectra Hole burning in sm2 doped silicate glasses prepared by the sol gel process
Applied Physics Letters, 1995Co-Authors: Masayuki Nogami, Kazuyuki HiraoAbstract:Persistent spectra Hole burning is observed at room temperature in the excitation spectrum for the 7F0→5D0 transition of the Sm2+ ions that are doped in aluminosilicate glass. Glass having the composition of Sm2+‐doped Al2O3⋅9SiO2 has been prepared by the sol‐gel processing of metal alkoxides and the reaction with H2 gas at 800 °C. Sol‐gel derived glass enables Sm to be doped in the Sm2+ state of which the 4f6 (7F0)→4f55d band does not overlap with the 5D0→7F0 line. The Hole Width and depth, which are burned by the DCM dye laser, are ∼15 cm−1 and ∼10% of the total intensity, respectively, at 20 °C.
Yoshihiro Abe - One of the best experts on this subject based on the ideXlab platform.
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high temperature persistent spectral Hole burning of eu3 doped sio2 glass prepared by the sol gel process
Applied Physics Letters, 1997Co-Authors: Masayuki Nogami, Yoshihiro AbeAbstract:Persistent spectral Hole burning was observed at temperatures higher than 77 K in SiO2 glass doped with the Eu3+ ions. The Eu3+-doped SiO2 glass was prepared using the sol-gel process of Si(OC2H5)4 and EuCl3⋅6H2O. A persistent spectral Hole was burned in the excitation spectrum of the 7F0→5D0 transition of Eu3+ using a Rhodamine 6G dye laser, of which the Hole Width and depth were 1.6 cm−1 and ∼20% of the total intensity, respectively, at 77 K. Hole depth decreased with increasing temperature and disappeared above ∼130 K. A possible mechanism for the Hole burning is related to the local structure around Eu3+ and the residual OH and H2O in the glass.
Naohiro Soga - One of the best experts on this subject based on the ideXlab platform.
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room temperature persistent Hole burning of sm 2 in oxide glasses
Optics Letters, 1993Co-Authors: Kazuyuki Hirao, Shinichi Todoroki, Naohiro SogaAbstract:Persistent spectral Hole burning in Sm2+-doped borate glasses is observed at room temperature. The possible number of Holes is approximately five times larger than in halide glass systems because of the larger inhomogeneous lineWidth and smaller Hole Width of borate glass. In this system the photoionization of trapping electrons other than Sm ions at a site is likely to be dominant because of the absence of an antiHole adjacent to the Hole.
S Volker - One of the best experts on this subject based on the ideXlab platform.
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spectral distributions of trap pigments in the rc cp47 and cp47 rc complexes of photosystem ii at low temperature a fluorescence line narrowing and Hole burning study
Journal of Physical Chemistry B, 1998Co-Authors: F Den T H Hartog, Jan P Dekker, R Van Grondelle, S VolkerAbstract:Broad-band absorption and fluorescence, fluorescence line-narrowing (FLN), and spectral Hole-burning experiments have been performed on the Qy-band of three subcore reaction-center complexes of photosystem II between 1.2 and 4.2 K: the isolated reaction center (RC), the inner core antenna CP47, and the CP47−RC complex. In the RC, fluorescence line-narrowing (FLN) is observed for excitation wavelengths λexc ≥ 676 nm, whereas in CP47, this occurs for λexc ≥ 680 nm. The FLN spectra of CP47−RC appear to be the sum of the individual spectra of the RC and CP47, an indication that this complex has two “traps”. This has been confirmed from the spectral distributions obtained by measuring the Hole depth (at constant Hole Width) as a function of λexc, as previously done for the RC [Groot, M. L., et al. J. Phys. Chem. 100, 1996, 11488]. The maxima of these distributions are at ∼682 nm for the RC “trap” and at ∼690 nm for the CP47 “trap” within the CP47−RC complex. Further support that the two distributions of pigme...