Propagation, beam geometry, and detection distortions of peak shapes in two-dimensional Fourier transform spectra

2007 ◽  
Vol 126 (4) ◽  
pp. 044511 ◽  
Author(s):  
Michael K. Yetzbacher ◽  
Nadia Belabas ◽  
Katherine A. Kitney ◽  
David M. Jonas
Keyword(s):  
Fourier Transform ◽  
Two Dimensional ◽  
Beam Geometry ◽  
Fourier Transform Spectra

Propagation and Beam Geometry Effects on Two-Dimensional Fourier Transform Spectra of Multilevel Systems†

2009 ◽  
Vol 113 (47) ◽  
pp. 13287-13299 ◽  
Author(s):  
Byungmoon Cho ◽  
Michael K. Yetzbacher ◽  
Katherine A. Kitney ◽  
Eric R. Smith ◽  
David M. Jonas
Keyword(s):  
Fourier Transform ◽  
Two Dimensional ◽  
Multilevel Systems ◽  
Beam Geometry ◽  
Geometry Effects ◽  
Fourier Transform Spectra

Propagation and beam geometry effects on 2D Fourier transform spectra of multi-level systems

2009 ◽  
pp. 424-426
Author(s):  
Byungmoon Cho ◽  
Michael K. Yetzbacher ◽  
Katherine A. Kitney ◽  
Eric R. Smith ◽  
David M. Jonas
Keyword(s):  
Fourier Transform ◽  
Beam Geometry ◽  
Multi Level ◽  
Geometry Effects ◽  
Fourier Transform Spectra

The Effect of Pulse Chirp on Two-Dimensional Fourier Transform Spectra

2010 ◽  
Author(s):  
Patrick F. Tekavec ◽  
Jeffrey A. Myers ◽  
Kristin L. M. Lewis ◽  
Franklin Fuller ◽  
Jennifer P. Ogilvie
Keyword(s):  
Fourier Transform ◽  
Two Dimensional ◽  
Pulse Chirp ◽  
Fourier Transform Spectra

Polar Solvation Dynamics in the Femtosecond Evolution of Two-Dimensional Fourier Transform Spectra

2002 ◽  
Vol 106 (34) ◽  
pp. 7651-7654 ◽  
Author(s):  
John D. Hybl ◽  
Anchi Yu ◽  
Darcie A. Farrow ◽  
David M. Jonas
Keyword(s):  
Fourier Transform ◽  
Solvation Dynamics ◽  
Two Dimensional ◽  
Fourier Transform Spectra ◽  
Polar Solvation

Comparison of Calculated and Recorded Electron Energy-Loss Spectra of Aluminium and Carbon

1990 ◽  
Vol 48 (2) ◽  
pp. 64-65
Author(s):  
L. Reimer ◽  
R. Oelgeklaus
Keyword(s):  
Fourier Transform ◽  
Energy Loss ◽  
Electron Energy ◽  
Rotational Symmetry ◽  
Mean Free Path ◽  
Single Scattering ◽  
Specimen Thickness ◽  
Two Dimensional ◽  
Image Position ◽  
Electron Energy Loss

Quantitative electron energy-loss spectroscopy (EELS) needs a correction for the limited collection aperture α and a deconvolution of recorded spectra for eliminating the influence of multiple inelastic scattering. Reversely, it is of interest to calculate the influence of multiple scattering on EELS. The distribution f(w,θ,z) of scattered electrons as a function of energy loss w, scattering angle θ and reduced specimen thickness z=t/Λ (Λ=total mean-free-path) can either be recorded by angular-resolved EELS or calculated by a convolution of a normalized single-scattering function ϕ(w,θ). For rotational symmetry in angle (amorphous or polycrystalline specimens) this can be realised by the following sequence of operations :(1)where the two-dimensional distribution in angle is reduced to a one-dimensional function by a projection P, T is a two-dimensional Fourier transform in angle θ and energy loss w and the exponent -1 indicates a deprojection and inverse Fourier transform, respectively.

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