Rotational compensation

The software contains features such as TCG- compensation, information on probe rotation, compensations for object geometry and can provide a choice of A-, B- and C-scan images while scanning. 

Figure 18.1 Schematic representation oftheIR multiple-photon excitation of a polyatomic molecule (exemplified for SFg). The excitation process can be divided into three parts (i) the first three absorption steps require rotational compensation in order to achieve resonance with the fixed-frequency laser (see text) (ii)afterthat, excitation through the quasi-continuum ensures resonance and further absorption up to the dissociation threshold (iii) dissociation starts at threshold and the dissociation rate increases rapidly with excess energy...

Fig. 2.15 Schematic diagram of a few possible configurations of automated ellipsometers. From the top to the bottom, a rotating analyzer ellipsometer (RAE), a rotating compensator ellipsometer (RCE), and a rotating analyzer with compensator ellipsometer (RACE)...

Protein-adsorption behavior tvas also investigated by in situ spectroscopic ellips-ometry using a rotating compensator apparatus [56]. A fixed angle of incidence of 75° tvas used over a spectrum range of 191 to 1690 nm. The refractive indices of the polymer and the adsorbed protein layer as transparent materials were described using the Cauchy relationship. The thickness (d) and refractive index (n) of the adsorbed protein determined were used to calculate the surface concentration of protein (F) using De Feijter s formula ... 

P. S. Hauge, F. H. Dill, A Rotating-Compensator Fourier EUipsometer, Opt Commun.,... 

Collins, Multichannel Mueller matrix ellipsometer based on the dual rotating compensator principle. Thin Solid Films, 455-456 (2004) 14-23. 

There is still the problem of fine-tuning the rotational compensation. The... 

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