Characteristics of Dual-Wavelength Emission and Mode Competition in Two-Dimensional Random Medium

2013 ◽  
Vol 40 (8) ◽  
pp. 0806004
Author(s):  
樊婷 Fan Ting ◽  
李娜 Li Na
Keyword(s):  
Random Medium ◽  
Dual Wavelength ◽  
Mode Competition ◽  
Two Dimensional ◽  
Wavelength Emission

Mode competition of bichromatic laser emission in two-dimensional strong scattering random medium

Optik ◽  
2014 ◽  
Vol 125 (20) ◽  
pp. 6201-6204 ◽  
Author(s):  
Jiantao Lü ◽  
Jianing Xie ◽  
Guojie Chen
Keyword(s):  
Laser Emission ◽  
Random Medium ◽  
Mode Competition ◽  
Two Dimensional ◽  
Strong Scattering

>25 Gbit/s LiFi with Dual Wavelength Emission, Eye-safe, Laser Based White Light Collimated and Fiber Delivered Light Sources

2021 ◽  
Author(s):  
James Raring ◽  
Changmin Lee ◽  
Mohamed Sufyan Islim ◽  
Sovan Das ◽  
Adrian Sparks ◽  
...  
Keyword(s):  
White Light ◽  
Dual Wavelength ◽  
Light Sources ◽  
Wavelength Emission

Visible light stimulating dual-wavelength emission and O vacancy involved energy transfer behavior in luminescence for coaxial nanocable arrays

2014 ◽  
Vol 115 (22) ◽  
pp. 224308 ◽  
Author(s):  
Lei Yang ◽  
Jiazhang Dong ◽  
Zhongcheng Jiang ◽  
Anlian Pan ◽  
Xiujuan Zhuang
Keyword(s):  
Energy Transfer ◽  
Visible Light ◽  
Dual Wavelength ◽  
Transfer Behavior ◽  
Wavelength Emission ◽  
O Vacancy

Richtmyer–Meshkov instability on two-dimensional multi-mode interfaces

2021 ◽  
Vol 928 ◽  
Author(s):  
Yu Liang ◽  
Lili Liu ◽  
Zhigang Zhai ◽  
Juchun Ding ◽  
Ting Si ◽  
...  
Keyword(s):  
Nonlinear Model ◽  
Initial Conditions ◽  
Superposition Principle ◽  
Mode Competition ◽  
Two Dimensional ◽  
Competition Effect ◽  
Density Ratios ◽  
Multi Mode ◽  
Amplitude Growth ◽  
Perturbation Growth

Shock-tube experiments on eight kinds of two-dimensional multi-mode air–SF $_6$ interface with controllable initial conditions are performed to examine the dependence of perturbation growth on initial spectra. We deduce and demonstrate experimentally that the amplitude development of each mode is influenced by the mode-competition effect from quasi-linear stages. It is confirmed that the mode-competition effect is closely related to initial spectra, including the wavenumber, the phase and the initial amplitude of constituent modes. By considering both the mode-competition effect and the high-order harmonics effect, a nonlinear model is established based on initial spectra to predict the amplitude growth of each individual mode. The nonlinear model is validated by the present experiments and data in the literature by considering diverse initial spectra, shock intensities and density ratios. Moreover, the nonlinear model is successfully extended based on the superposition principle to predict the growths of the total perturbation width and the bubble/spike width from quasi-linear to nonlinear stages.

Use of Near-Infrared–Mid-Infrared Dual-Wavelength Spectrometry to Obtain Two-Dimensional Difference Spectra of Sesame Oil as Inactive Drug Ingredient

2020 ◽  
pp. 000370282096919
Author(s):  
Masahiro Watari ◽  
Akifumi Nagamoto ◽  
Takuma Genkawa ◽  
Shigeaki Morita
Keyword(s):  
Room Temperature ◽  
Near Infrared ◽  
Sesame Oil ◽  
Partial Least Square ◽  
Dual Wavelength ◽  
Two Dimensional ◽  
Difference Spectra ◽  
Mid Infrared ◽  
Starting Point ◽  
Drug Ingredient

The present study has investigated the transformation of sesame oil kept at low temperature during a definite period of time for refinement (called winterization) as an inactive drug ingredient by using two-dimensional difference spectra (2D-DS) analysis of spectra collected using a near-infrared (NIR) and mid-infrared (MIR) dual-wavelength spectrometer (NIR–MIR-DWS). The NIR and MIR spectra were measured nearly simultaneously from samples of sesame oil before and after winterization. The difference spectrum analysis of the obtained NIR–MIR data elucidated that, after the winterization process, the absorbances at peaks attributed to C=O, C=C, and OH groups decrease while the absorbances arising from the main chain (CH2) increase. The result indicated the removal of lignan and the fatty acids with relatively short main chains. Moreover, sesame oil unwinterized was cooled from room temperature to near 1 ℃ and subsequently warmed to room temperature. And the cycle was repeated two times. Real-time monitoring during the cooling and warming processes were carried out using the NIR-MIR-DWS. The prediction results obtained from partial least square calibration model for the temperature suggests that there are subtle differences in the oil composition between the first cooling process and after the warming and cooling cycle. For the more detailed analysis, the 2D-DS method is proposed. The results of the analyses using 2D-DS revealed that the starting point of the transformation is around 15 ℃. It can be estimated that sesame oil is mainly transformed by the first cooling down. Moreover, it was implied that the structure of methylene (CH2) was significantly related to the modifications in sesame oil with temperature change. A series of experimental results elucidated that the winterization of sesame oil removed its impurities and stabilized its conditions. These results are probably the first report on the effect of the winterization process on sesame oil.

The competition between two polarization states in two-dimensional random medium

2008 ◽  
Vol 281 (10) ◽  
pp. 2964-2969 ◽  
Author(s):  
Hai Liu ◽  
Jinsong Liu ◽  
Bo Feng ◽  
Qingquan Zhang ◽  
Jiantao Lü ◽  
...  
Keyword(s):  
Random Medium ◽  
Two Dimensional ◽  
Polarization States

1W tunable dual-wavelength emission from cascaded distributed feedback fiber lasers

2008 ◽  
Vol 92 (5) ◽  
pp. 051111 ◽  
Author(s):  
L. Li ◽  
A. Schülzgen ◽  
X. Zhu ◽  
J. V. Moloney ◽  
J. Albert ◽  
...  
Keyword(s):  
Fiber Lasers ◽  
Distributed Feedback ◽  
Dual Wavelength ◽  
Wavelength Emission
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