Wide dynamic range wavefront sensor using sub-wavelength grating array

2015 ◽  
Vol 347 ◽  
pp. 68-74
Author(s):  
Xiaobin Liang ◽  
Yanqiu Li ◽  
Ke Liu
Keyword(s):  
Dynamic Range ◽  
Wavefront Sensor ◽  
Wide Dynamic Range ◽  
Grating Array ◽  
Sub Wavelength

Slow-Scan CCD Observation of Backscattering Patterns in SEM

1992 ◽  
Vol 50 (2) ◽  
pp. 1308-1309
Author(s):  
F. Ouyang ◽  
D. A. Ray ◽  
O. L. Krivanek
Keyword(s):  
Electron Beam ◽  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Dynamic Range ◽  
High Sensitivity ◽  
Lens System ◽  
Wide Dynamic Range ◽  
Peltier Cooler ◽  
Diffraction Patterns ◽  
Scanning Electron

Electron backscattering Kikuchi diffraction patterns (BKDP) reveal useful information about the structure and orientation of crystals under study. With the well focused electron beam in a scanning electron microscope (SEM), one can use BKDP as a microanalysis tool. BKDPs have been recorded in SEMs using a phosphor screen coupled to an intensified TV camera through a lens system, and by photographic negatives. With the development of fiber-optically coupled slow scan CCD (SSC) cameras for electron beam imaging, one can take advantage of their high sensitivity and wide dynamic range for observing BKDP in SEM.We have used the Gatan 690 SSC camera to observe backscattering patterns in a JEOL JSM-840A SEM. The CCD sensor has an active area of 13.25 mm × 8.83 mm and 576 × 384 pixels. The camera head, which consists of a single crystal YAG scintillator fiber optically coupled to the CCD chip, is located inside the SEM specimen chamber. The whole camera head is cooled to about -30°C by a Peltier cooler, which permits long integration times (up to 100 seconds).

Design of an Offner convex grating radiation calibration light source with a wide dynamic range

2020 ◽  
Vol 13 (5) ◽  
pp. 1085-1093
Author(s):  
XU Da ◽  
◽  
YUE Shi-xin ◽  
ZHANG Guo-yu ◽  
SUN Gao-fei ◽  
...  
Keyword(s):  
Light Source ◽  
Dynamic Range ◽  
Wide Dynamic Range

A novel, flexible dual-mode power generator adapted for wide dynamic range of the aqueous salinity

Nano Energy ◽  
2021 ◽  
Vol 85 ◽  
pp. 105970
Author(s):  
Lianhui Li ◽  
Shouwei Gao ◽  
Mingming Hao ◽  
Xianqing Yang ◽  
Sijia Feng ◽  
...  
Keyword(s):  
Dynamic Range ◽  
Dual Mode ◽  
Wide Dynamic Range ◽  
Power Generator
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