Development of a divided pulse soliton self frequency shift source for multiline nonlinear imaging

2021 ◽  
Author(s):  
Atriya Ghosh ◽  
Victor Bucklew ◽  
Zhiwen Liu
Keyword(s):  
Frequency Shift ◽  
Nonlinear Imaging

Image formation analysis of thick biological specimens using three-dimensional power-spectra of through focus series

1994 ◽  
Vol 52 ◽  
pp. 124-125
Author(s):  
Karen F. Han
Keyword(s):  
Inelastic Scattering ◽  
Imaging Techniques ◽  
Mass Density ◽  
Relative Proportion ◽  
Three Dimensional ◽  
Power Spectra ◽  
Image Formation ◽  
Energy Filtering ◽  
Ewald Sphere ◽  
Nonlinear Imaging

The primary focus in our laboratory is the study of higher order chromatin structure using three dimensional electron microscope tomography. Three dimensional tomography involves the deconstruction of an object by combining multiple projection views of the object at different tilt angles, image intensities are not always accurate representations of the projected object mass density, due to the effects of electron-specimen interactions and microscope lens aberrations. Therefore, an understanding of the mechanism of image formation is important for interpreting the images. The image formation for thick biological specimens has been analyzed by using both energy filtering and Ewald sphere constructions. Surprisingly, there is a significant amount of coherent transfer for our thick specimens. The relative amount of coherent transfer is correlated with the relative proportion of elastically scattered electrons using electron energy loss spectoscopy and imaging techniques.Electron-specimen interactions include single and multiple, elastic and inelastic scattering. Multiple and inelastic scattering events give rise to nonlinear imaging effects which complicates the interpretation of collected images.

On a new method in spectroscopy : laser-induced frequency shift of self-excited ion oscillations

1992 ◽  
Vol 2 (7) ◽  
pp. 1367-1372
Author(s):  
R. C. Bobulescu ◽  
M. A. Brǎtescu ◽  
C. Stǎnciulescu ◽  
G. Musa
Keyword(s):  
Frequency Shift ◽  
New Method ◽  
Spectroscopy Laser

Research of the Brillouin frequency shift damage dependence from mechanical stresses in an optical sensor

2019 ◽  
Vol 9 (5) ◽  
pp. 512-521
Author(s):  
Ruslan V. Aginey ◽  
◽  
Rustem R. Islamov ◽  
Alexander A. Godunov ◽  
◽  
...  
Keyword(s):  
Frequency Shift ◽  
Optical Sensor ◽  
Mechanical Stresses

Multi-wavelength Brillouin Raman random fiber laser with double Brillouin frequency shift

Optik ◽  
2021 ◽  
Vol 227 ◽  
pp. 166085
Author(s):  
Xingxing Zhu ◽  
Pingping Xiao ◽  
Wen Yuan
Keyword(s):  
Frequency Shift ◽  
Fiber Laser ◽  
Multi Wavelength

scholarly journals Improved estimate of the collisional frequency shift in Al+ optical clocks

2019 ◽  
Vol 1 (3) ◽  
Author(s):  
Jack Davis ◽  
Pierre Dubé ◽  
Amar C. Vutha
Keyword(s):  
Frequency Shift
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