Self-calibration and high-accuracy detection technology for the probability density of polarization state of a light field

2018 ◽  
Author(s):  
Jianhui Li ◽  
Tianlei Ning ◽  
Yanqiu Li ◽  
Ke Liu ◽  
Lihui Liu ◽  
...  
Keyword(s):  
Probability Density ◽  
Light Field ◽  
Polarization State ◽  
High Accuracy ◽  
Self Calibration ◽  
Detection Technology

High-accuracy self-calibration method for dual-axis rotation-modulating RLG-INS

2017 ◽  
Author(s):  
Guo Wei ◽  
Chunfeng Gao ◽  
Qi Wang ◽  
Qun Wang ◽  
Xingwu Long
Keyword(s):  
Calibration Method ◽  
High Accuracy ◽  
Self Calibration ◽  
Axis Rotation

A New Procedure for Measuring High-Accuracy Probability Density Functions

2012 ◽  
Author(s):  
Takahiro J. Yamaguchi ◽  
Kunihiro Asada ◽  
Kiichi Niitsu ◽  
Mohamed Abbas ◽  
Satoshi Komatsu ◽  
...  
Keyword(s):  
Probability Density ◽  
High Accuracy ◽  
Probability Density Functions ◽  
Density Functions

Light field camera self-calibration and registration

2016 ◽  
Author(s):  
Zhe Ji ◽  
Chunping Zhang ◽  
Qing Wang
Keyword(s):  
Light Field ◽  
Self Calibration

scholarly journals Molecular frame photoemission by a comb of elliptical high-order harmonics: a sensitive probe of both photodynamics and harmonic complete polarization state

2016 ◽  
Vol 194 ◽  
pp. 161-183 ◽  
Author(s):  
K. Veyrinas ◽  
V. Gruson ◽  
S. J. Weber ◽  
L. Barreau ◽  
T. Ruchon ◽  
...  
Keyword(s):  
Light Field ◽  
Polarization State ◽  
High Harmonic ◽  
Direct Determination ◽  
High Order ◽  
Stokes Parameters ◽  
Degree Of Polarization ◽  
Light Sources ◽  
Elliptically Polarized ◽  
Molecular Frame

Due to the intimate anisotropic interaction between an XUV light field and a molecule resulting in photoionization (PI), molecular frame photoelectron angular distributions (MFPADs) are most sensitive probes of both electronic/nuclear dynamics and the polarization state of the ionizing light field. Consequently, they encode the complex dipole matrix elements describing the dynamics of the PI transition, as well as the three normalized Stokes parameters s1, s2, s3 characterizing the complete polarization state of the light, operating as molecular polarimetry. The remarkable development of advanced light sources delivering attosecond XUV pulses opens the perspective to visualize the primary steps of photochemical dynamics in time-resolved studies, at the natural attosecond to few femtosecond time-scales of electron dynamics and fast nuclear motion. It is thus timely to investigate the feasibility of measurement of MFPADs when PI is induced e.g., by an attosecond pulse train (APT) corresponding to a comb of discrete high-order harmonics. In the work presented here, we report MFPAD studies based on coincident electron-ion 3D momentum imaging in the context of ultrafast molecular dynamics investigated at the PLFA facility (CEA-SLIC), with two perspectives: (i) using APTs generated in atoms/molecules as a source for MFPAD-resolved PI studies, and (ii) taking advantage of molecular polarimetry to perform a complete polarization analysis of the harmonic emission of molecules, a major challenge of high harmonic spectroscopy. Recent results illustrating both aspects are reported for APTs generated in unaligned SF6 molecules by an elliptically polarized infrared driving field. The observed fingerprints of the elliptically polarized harmonics include the first direct determination of the complete s1, s2, s3 Stokes vector, equivalent to (ψ, ε, P), the orientation and the signed ellipticity of the polarization ellipse, and the degree of polarization P. They are compared to so far incomplete results of XUV optical polarimetry. We finally discuss the comparison between the outcomes of photoionization and high harmonic spectroscopy for the description of molecular photodynamics.

A self-calibration method with high-accuracy and low-cost for large-area motion stage based on digital grating projection mode

2019 ◽  
Vol 12 (12) ◽  
pp. 126503
Author(s):  
Shengzhou Huang ◽  
Mujun Li ◽  
Lei Wang ◽  
Yongsheng Su ◽  
Yi Liang
Keyword(s):  
Low Cost ◽  
Calibration Method ◽  
High Accuracy ◽  
Large Area ◽  
Self Calibration ◽  
Motion Stage

Research of Quantitative Analyzer for Fluorescence Immune Chromatography Strips

2013 ◽  
Vol 373-375 ◽  
pp. 1000-1006
Author(s):  
Xiao Ting Li ◽  
Kai Jiang ◽  
Ping Wang
Keyword(s):  
Least Square Method ◽  
High Accuracy ◽  
Least Square ◽  
Good Prospect ◽  
Fluorescence Immunoassay ◽  
Response Characteristics ◽  
Photoelectric Detection ◽  
Detection Technology ◽  
Relative Standard ◽  
Low Pass

Fluorescence immunoassay technology is widely recognized as the most sensitive detection technology, now widely used in clinical testing. The research of quantitative analyzer for fluorescence immune chromatography strips is of great significance. In this thesis, a quantitative analyzer for fluorescence immune chromatography strips has realized, based on photoelectric detection principle and immunochromatographic. The system uses LPC1788 and MSP430 as processors. Using some algorithms such as low-pass filtering, least square method and area method to analyze the detected waveform and eliminate noise with high accuracy. In our experiment, the minimum detection concentration is at several mIU/ml levels, the relative standard deviation is less than 2% and it has good linear response characteristics in a concentration range from 0.5125 to 952mIU/ml while the correlation coefficient R2 is 0.981. The instrument has a good prospect.

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