Double Sideband Suppressed Carrier Performance with Optical Balanced Detection

2013 ◽  
Vol 684 ◽  
pp. 600-603
Author(s):  
Kuo Chen Lang ◽  
Hui Kang Teng

A double sideband suppressed carrier (DSB-SC) achieved by optical balanced detection (OBD) approach with single photo-receiver instead of two is experimentally demonstrated. The OBD not only rejects common mode noises, it also enables the interferometer operating at dark fringe to achieve quantum noise limited (QNL) phase detection.

Author(s):  
J. Langmore ◽  
M. Isaacson ◽  
J. Wall ◽  
A. V. Crewe

High resolution dark field microscopy is becoming an important tool for the investigation of unstained and specifically stained biological molecules. Of primary consideration to the microscopist is the interpretation of image Intensities and the effects of radiation damage to the specimen. Ignoring inelastic scattering, the image intensity is directly related to the collected elastic scattering cross section, σɳ, which is the product of the total elastic cross section, σ and the eficiency of the microscope system at imaging these electrons, η. The number of potentially bond damaging events resulting from the beam exposure required to reduce the effect of quantum noise in the image to a given level is proportional to 1/η. We wish to compare η in three dark field systems.


Author(s):  
H. Rose

The scanning transmission electron microscope offers the possibility of utilizing inelastically scattered electrons. Use of these electrons in addition to the elastically scattered electrons should reduce the scanning time (dose) Which is necessary to keep the quantum noise below a certain level. Hence it should lower the radiation damage. For high resolution, Where the collection efficiency of elastically scattered electrons is small, the use of Inelastically scattered electrons should become more and more favorable because they can all be detected by means of a spectrometer. Unfortunately, the Inelastic scattering Is a non-localized interaction due to the electron-electron correlation, occurring predominantly at the circumference of the atomic electron cloud.


Author(s):  
T. Oikawa ◽  
N. Mori ◽  
T. Katoh ◽  
Y. Harada ◽  
J. Miyahara ◽  
...  

The “Imaging Plate”(IP) is a highly sensitive image recording plate for X-ray radiography. It has been ascertained that the IP has superior properties and high practicability as an image recording material in a TEM. The sensitivity, one of the properties, is about 3 orders higher than that of conventional photo film. The IP is expected to be applied to low dose techniques. In this paper, an estimation of the quantum noise on the TEM image which appears in case of low electron dose on the IP is reported.In this experiment, the JEM-2000FX TEM and an IP having the same size as photo film were used.Figure 1 shows the schematic diagram of the total system including the TEM used in this experiment. In the reader, He-Ne laser light is scanned across the IP, then blue light is emitted from the IP.


2012 ◽  
Vol 17 (1) ◽  
pp. 44-54 ◽  
Author(s):  
Guido Alessandri ◽  
Gian Vittorio Caprara ◽  
John Tisak

Literature documents that the judgments people hold about themselves, their life, and their future are important ingredients of their psychological functioning and well-being, and are commonly related to each other. In this paper, results from a large cross-sectional sample (N = 1,331, 48% males) are presented attesting to the hypothesis that evaluations about oneself, one’s life, and one’s future rest on a common mode of viewing experiences named “Positive Orientation.” These results corroborate the utility of the new construct as a critical component of individuals’ well functioning.


2019 ◽  
Vol 139 (12) ◽  
pp. 657-662
Author(s):  
Minghui Chen ◽  
Jianqing Wang ◽  
Daisuke Anzai ◽  
Georg Fischer

2010 ◽  
Vol 130 (5) ◽  
pp. 479-480
Author(s):  
Takanori Uno ◽  
Kouji Ichikawa ◽  
Yuichi Mabuchi ◽  
Atushi Nakamura

2019 ◽  
Vol 139 (3) ◽  
pp. 339-347 ◽  
Author(s):  
Shotaro Takahashi ◽  
Satoshi Ogasawara ◽  
Masatsugu Takemoto ◽  
Koji Orikawa ◽  
Michio Tamate

2018 ◽  
Vol 138 (6) ◽  
pp. 481-490
Author(s):  
Kazuhiro Shirakawa ◽  
Kazuyoshi Obayashi ◽  
Hiroshi Taki ◽  
Masami Fujitsuna ◽  
Toshihisa Shimizu
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