Spectral dependencies

Fig. 11. The spectral dependence of the polar Kerr rotation for GdTb—Fe and for a series of Co/Pt multilayers with = 0.36 nm and with A,...

Depth resolution depends on the (spectrally dependent) optical absorption coefficient of the material. Near-surface analysis (first 50 nm) frequendy can be per-... 

The spectral dependence of the photoresponse of these bilayer heterojunction devices, illuminated from the 1TO side, is displayed in Figure 15-22. The onset of photocurrent at hv— 1.7 cV follows the absorption of the fullerene, indicating a symmetric hole transfer from the excited fullerene to the MEH-PPV. The minimum in the photocurrent at /iv=2.5 eV corresponds to the photon energy of maximum absorption of MEH-PPV. The MEH-PPV layer, therefore, acts as a filter, which reduces the number of photons reaching the MEH-PPV/C()0 interlace. Thus, the thickness of the MEH-PPV layer determines the anlibatic spectral be-... 

Ibdah, M. et al.. Spectral dependence of llavonol and betacyanin accumulation in Mesembryanthemum crystallinwn under enhanced ultraviolet radiation. Plant Cell Environ., 25, 1145, 2002. 

Melnikov, A. V., Radu, I., Bovensiepen, U., Starke, K., Wolf M. and Matthias, F. (2005) Spectral dependence of time-resolved coherent and incoherent second-harmonic response of ferromagnetic Gd(OOOl). 

Figure 3.45 (a) Spectral dependence of the optical response on pulsing a lead cathode in 0.4 M tetramethylammonium perchlorate in propylene carbonate saturated with C02 from + I.0V to +0.2 V at 30 Hz. The reference electrode was Li/0.5M Li +. (b) As in (a) except solvent changed to acetonitrile. From Aylmer-Kelly et at. (1973). 

Figure 9. Sectorial S-fibre structure Figure 10. Spectral dependence of the attenuation of (microphoto), core diameter 30 pm. the s-fihre and PCS fibre in solution of methylene...

M. Essenpreis, C. E. Elwell, M. Cope, and D. T. Delpy. Spectral dependence of temporal point spread functions in human tissues. Applied Optics, 32 418-425, 1993. 

Spectral Dependence of the Absolute Quantum Yield of the Main Chain Cleavage Reaction... 

Using this data the spectral dependence of the absolute quantum yield of the main chain fission of PMMA was calculated follow-... 

The absolute sensitivity was defined as the number of main chain scissions occurring in one photon molecule when one photon was irradiated on a unit surface (1 cm2) of the film. If the spectral dependence of the quantum yield has been obtained, the absolute sensitivity is calculated following the formula (4). The results obtained are shown in Fig. 9. The practical sensitivity will be the integral of the product of the absolute intensity of the irradiated light and the absolute sensitivity in Fig. 9 over all the wavelength of the spectra. 

Figure 8. Spectral dependence of quantum, yield (0) PMMA ( ) PMMA + p-tert-butyl benzoic acid (A PMMA + 2,4-di-tert-butylphenol (Q) PMMA + 2,4,6-tri-tert-butylphenol...

Fig. 7.6 Spectral dependence of the absorption coefficient for free-standing micro PS (72% porosity), meso PS (45% porosity), bulk Si and amorphous Si H at RT. While the meso porous film can be roughly fitted to a Bruggeman effective medium calculation for...

Measurement of the decay kinetics /(/) in different regions of the fluorescence spectrum. If relaxation (or any reaction in the excited state) is absent, I(t) does not depend on vem, whereas in its presence, the spectral dependence illustrated in Figure 2.7 is observed. 

Figure 2.10 The spectral dependence of the laser output power of Ar+ and Kr+ lasers.

Figure 3.13 The spectral dependence of the specific detectivity for several photoconduction detectors. The values corresponding to a typical thermopile and to a typical piroelectric detector are also shown.

Figure 3.15 shows the spectral dependence of the specific detectivity, D, reported for germanium and indium arsenide photodiodes, respectively. The main properties of these detectors are also summarized in Table 3.1 for comparison. 

Figure 4.1 The spectral dependencies of (a) ei and 2 and (b) k and R. These curves have been represented for typical values within the optical range fia)o = 4eV, fiF = eV, and...

For some direct-gap materials, the quantum electronic selection rules lead to = 0. However, this is only strictly true at / = 0. For 0, it can be assumed, in a first order approximation, that the matrix element involving the top valence and the bottom conduction states is proportional to k that is, Pif k. Within the simplified model of parabolic bands (see Appendix Al), it is obtained that Tuo = Tuog + flp., and therefore Pif k co — cog). Thns, according to Equations (4.31) and (4.32), the absorption coefficient for these transitions (called forbidden direct transitions) has the following spectral dependence ... 

Benson RC, Hoffinan RC, Potember RS, Bourkoff E, Poehler TO (1983) Spectral dependence of reversible optically induced transitions in organometallic compounds. Appl Phys Lett 42 855-857 and references therein... 

FIGURE 9.12 (a) Calculated FE-CARS radiation profile when a HGOl excitation field overlaps with a lateral interface between a resonant and a nonresonant material. Note that the intensity along the optical axis is no longer zero due to partial lifting of the phase step by the interface. The inset shows the excitation field relative to the orientation of the interface, (b) Comparison of the calculated spectral dependence of CARS in a bulk material with a weak resonance and FE-CARS measured at an interface similar to the one considered in (a). Note the Raman-like spectral dependence of the FE-CARS signal. 

Figure 9 Spectral dependence of the benzophenone anion as a function of time at 0.15 M propanol in n-hexane.

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