Excitation Energy and Temperature Dependence of the Phase Coherent Photorefractive Effect

2011 ◽  
Author(s):  
A. Kabir ◽  
H. P. Wagner ◽  
Jisoon Ihm ◽  
Hyeonsik Cheong
Keyword(s):  
Excitation Energy ◽  
Temperature Dependence ◽  
Photorefractive Effect

Temperature dependence of the photorefractive effect in Bi12GeO20

1998 ◽  
Vol 84 (4) ◽  
pp. 1830-1833 ◽  
Author(s):  
D. Bloom ◽  
S. W. S. McKeever
Keyword(s):  
Temperature Dependence ◽  
Photorefractive Effect

The wavelength- and temperature-dependence of the fluorescence efficiency and of the primary photochemical yield in hexafluoroacetone vapour

1959 ◽  
Vol 250 (1262) ◽  
pp. 287-300 ◽  
Keyword(s):  
Excitation Energy ◽  
Temperature Dependence ◽  
Room Temperature ◽  
Wavelength Dependence ◽  
Fluorescence Yield ◽  
A Value ◽  
Fluorescence Efficiency ◽  
Vibrational Levels ◽  
Photochemical Yield ◽  
The One

The measurement of the fluorescence and photochemical yields of hexafluoroacetone previously made at 3130 Å and at room temperature is extended to various other wavelengths and temperatures. Relative fluorescence yields at room temperature increase with decrease of excitation energy. This wavelength dependence is smaller at higher concentrations. The yields increase with concentration eventually converging almost to a single value. On the other hand, the photochemical yields measured show the opposite trends with respect to variations in concentration and excitation energy. As concentration increases they also converge to a value almost identical with that at 3130 Å. The temperature effect on the fluorescence yield is also opposite to the one on the photolysis at 3130 Å. The fluorescence decreases with increase in temperature, the variation being much bigger at higher concentrations. The intensity distribution of the fluorescence band is independent of temperature. It seems difficult to interpret the observed temperature dependence for fluorescence quenching and for dissociation at infinite concentration on the basis of a single excited state. Two modes of dissociation are postulated arising respectively from low and from high vibrational levels of different electronic states.

Temperature dependence of the photorefractive effect in undoped Bi12GeO20

1993 ◽  
Vol 74 (2) ◽  
pp. 783-789 ◽  
Author(s):  
Istvan Foldvari ◽  
Joel J. Martin ◽  
Charles A. Hunt ◽  
Richard C. Powell ◽  
Roger J. Reeves ◽  
...  
Keyword(s):  
Temperature Dependence ◽  
Photorefractive Effect

Temperature dependence of excitation energy transport in a benzene branching molecular system

2004 ◽  
Vol 383 (3-4) ◽  
pp. 411-417 ◽  
Author(s):  
Mahinda I. Ranasinghe ◽  
Prescott Murphy ◽  
Zhikuan Lu ◽  
Songping D. Huang ◽  
Robert J. Twieg ◽  
...  
Keyword(s):  
Excitation Energy ◽  
Temperature Dependence ◽  
Energy Transport ◽  
Molecular System
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