ChemInform Abstract: Crystal Growth, Nonlinear Frequency-Doubling and Spectral Characteristic of Nd:Ca9La(VO4)7Crystal.

ChemInform ◽  
2014 ◽  
Vol 45 (18) ◽  
pp. no-no
Author(s):  
Naifeng Zhuang ◽  
Xiaofeng Liu ◽  
Qianrui Xu ◽  
Xin Chen ◽  
Bin Zhao ◽  
...  
Keyword(s):  
Crystal Growth ◽  
Spectral Characteristic ◽  
Frequency Doubling ◽  
Nonlinear Frequency

Crystal growth, nonlinear frequency-doubling and spectral characteristic of Nd:Ca9La(VO4)7 crystal

2014 ◽  
Vol 595 ◽  
pp. 113-119 ◽  
Author(s):  
Naifeng Zhuang ◽  
Xiaofeng Liu ◽  
Qianrui Xu ◽  
Xin Chen ◽  
Bin Zhao ◽  
...  
Keyword(s):  
Crystal Growth ◽  
Spectral Characteristic ◽  
Frequency Doubling ◽  
Nonlinear Frequency

Experimental analysis of overall thermal properties of Nd:La2CaB10O19crystals

2012 ◽  
Vol 45 (6) ◽  
pp. 1182-1186 ◽  
Author(s):  
Jianxiu Zhang ◽  
Yang Wu ◽  
Guochun Zhang ◽  
Yin Li ◽  
Yicheng Wu
Keyword(s):  
Thermal Expansion ◽  
Rare Earth ◽  
Frequency Conversion ◽  
Frequency Doubling ◽  
Nonlinear Frequency ◽  
Rare Earth Ion ◽  
Nonlinear Frequency Conversion ◽  
Thermal Expansion Coefficients ◽  
Expansion Coefficients ◽  
Measured Specific Heat

Pure or rare-earth-ion-doped La2CaB10O19(LCB) is a promising optical material for nonlinear frequency conversion, laser and self-frequency doubling applications. In this paper, the thermophysical properties of Nd3+-doped LCB (Nd:LCB) crystals were measured and compared with those of pure and of Yb3+- and Er3+-doped LCB, as well as other borate nonlinear optical crystals. The melting points of rare-earth-doped LCB crystals are lower than that of pure LCB. Thermal expansion coefficients along thea,b,c,c*,a*, 〈110〉 and 〈110〉* directions have been measured, and the principal expansion coefficients were calculated to be 1.85 × 10−6, 4.13 × 10−6and 8.79 × 10−6 K−1. The measured specific heat of Nd:LCB is lower than that of pure LCB, resulting in a larger internal temperature gradient under irradiation by a pulsed laser beam. The measured thermal expansion anisotropy of Nd:LCB is stronger than that of pure LCB. The thermal conductivities of Nd:LCB along thecandc* directions are smaller than those along other crystallographic directions.

scholarly journals Nonlinear Suppression of a Dual-Tube Coriolis Mass Flowmeter Based on Synchronization Effect

2021 ◽  
Vol 11 (21) ◽  
pp. 9916
Author(s):  
Zhong-Xiang Li ◽  
Chun Hu ◽  
Ming-Zhe Han ◽  
Shang-Chun Fan ◽  
De-Zhi Zheng
Keyword(s):  
Lagrange Equation ◽  
Frequency Doubling ◽  
Nonlinear Frequency ◽  
Additional Mass ◽  
Suppression Effect ◽  
Coriolis Mass Flowmeter ◽  
Coupling System ◽  
Double Beam ◽  
Measuring Frequency ◽  
Synchronization Effect

Nonlinear interference components exist in the output signals of dual-tube Coriolis mass flowmeters (CMFs) which affect the sensitivity and accuracy of the devices. This nonlinearity still appears under zero flow, which is manifested when the output signal contains a frequency doubling signal. This study (1) investigated an additional-mass method to suppress the nonlinear frequency doubling phenomenon, (2) established a coupling system vibration model with additional mass, built a dynamic differential equation for the vibration of the double-beam coupling system from the Lagrange equation, (3) obtained amplitude frequency information using a fourth-order Runge–Kutta method, (4) determined the suppression effect of the additional mass on the nonlinear frequency doubling phenomenon, and (5) experimentally verified the CMF. The results showed that the base coupled the vibrations of two beams, and the symmetric additional mass suppressed the nonlinear frequency doubling phenomenon, thus suppressing low or high frequencies. Also, the effect of pipeline defects simulated under asymmetric additional mass was obtained through numerical analysis and experimental data. Flowmeters with a required measuring frequency range had the optimal suppression effect on nonlinear frequency doubling and provided theoretical guidance for the nondestructive testing of measuring tubes.

Crystal growth and characterization of CTGS and Nd:CTGS for self-frequency-doubling applications

CrystEngComm ◽  
2014 ◽  
Vol 16 (44) ◽  
pp. 10286-10291 ◽  
Author(s):  
Feifei Chen ◽  
Fapeng Yu ◽  
Shuai Hou ◽  
Yanqing Liu ◽  
Ying Zhou ◽  
...  
Keyword(s):  
Crystal Growth ◽  
Frequency Doubling
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