Nonlinear optical study of the Si(111)7×7 to 1×1 phase transition: Superheating and the nature of the 1×1 phase

1995 ◽  
Vol 52 (7) ◽  
pp. 5264-5268 ◽  
Author(s):  
U. Höfer ◽  
Leping Li ◽  
G. A. Ratzlaff ◽  
T. F. Heinz
Keyword(s):  
Phase Transition ◽  
Nonlinear Optical ◽  
Optical Study

PRELIMINARY OPTICAL STUDY ON ER FLUIDS

1994 ◽  
Vol 08 (20n21) ◽  
pp. 2921-2933 ◽  
Author(s):  
L. W. ZHOU ◽  
J. F. YE ◽  
R. B. TAO ◽  
Y. TANG ◽  
J. F. PENG ◽  
...  
Keyword(s):  
Phase Transition ◽  
Electric Field ◽  
Electric Fields ◽  
Nonlinear Optical ◽  
Second Harmonic ◽  
Optical Response ◽  
Optical Study ◽  
Solid States ◽  
Linear And Nonlinear ◽  
Er Fluids

Linear and nonlinear optical study on electrorheological (ER) fluids is reported. The ER fluids under the investigation were glass beads, zeolite and ferroelectrics. The linear optical response of some ER fluids showed sharp changes near critical electric fields. An enhancement of electric field induced second harmonic generations (EFISH) was observed as the function of E2, where E is the external electric field. The said enhancement is considered to be corresponding to a modulation of the material's refractive index associated with the electric field induced polarization of the delocalized electrons. The enhanced nonlinear optical response on the transition between liquid and solid states can be related to the phase transition in ER fluids.

Nonlinear Optical Study of Phase Transition in Lead Magnesium Niobate

1996 ◽  
Vol 35 (Part 1, No. 9B) ◽  
pp. 5062-5064 ◽  
Author(s):  
Kohji Fujishiro ◽  
Hidehisa Tazawa ◽  
Yoshiaki Uesu ◽  
Yasusada Yamada ◽  
Yohachi Yamashita
Keyword(s):  
Phase Transition ◽  
Nonlinear Optical ◽  
Lead Magnesium Niobate ◽  
Optical Study ◽  
Magnesium Niobate ◽  
Lead Magnesium

Competing hydrogen-bonding interactions in a high-Tc organic molecular-ionic crystal with evident nonlinear optical response

CrystEngComm ◽  
2021 ◽  
Vol 23 (13) ◽  
pp. 2509-2512
Author(s):  
Wen-Tao Xu ◽  
Jun-Chao Liu ◽  
Yu-Ling Zeng ◽  
Hua Zhang ◽  
Zhong-Xia Wang
Keyword(s):  
Phase Transition ◽  
Hydrogen Bonding ◽  
Ionic Crystal ◽  
Nonlinear Optical ◽  
Optical Response ◽  
Nonlinear Optical Response ◽  
High Tc ◽  
Hydrogen Bonding Interactions ◽  
Nlo Response

An organic molecular-ionic crystal of (TPPO–H)2SO4 exhibits moderate NLO response which is twice that of KDP and competing hydrogen-bonding interactions triggered high-Tc phase transition.

scholarly journals Surface plasmon optical study of the interfacial phase transition of elastinlike polypeptide grafted on gold

2008 ◽  
Vol 3 (3) ◽  
pp. 66-74 ◽  
Author(s):  
Fei Xu ◽  
Huang Min Joon ◽  
Kimberly Trabbic-Carlson ◽  
Ashutosh Chilkoti ◽  
Wolfgang Knoll
Keyword(s):  
Phase Transition ◽  
Surface Plasmon ◽  
Optical Study ◽  
Interfacial Phase

Nonlinear Optical Absorption and Related Phenomena in Liquid Crystals

2001 ◽  
Vol 709 ◽  
Author(s):  
N.V. Tabiryan ◽  
U.A. Hrozhyk ◽  
H.L. Margaryan ◽  
M.J. Mora ◽  
S.R. Nersisyan ◽  
...  
Keyword(s):  
Phase Transition ◽  
Light Scattering ◽  
Optical Absorption ◽  
Nonlinear Absorption ◽  
Nonlinear Optical ◽  
Isotropic Phase ◽  
Nonlinear Optical Absorption ◽  
Critical Opalescence ◽  
Application Potential ◽  
Large Application

SUMMARYThus, in the present paper, we reported about several processes of nonlinear absorption and transmission in dye-doped NLC: nonlinear absorption due to light induced reorientation of NLC doped by highly dichroic dyes; nonlinear transmission due to nonlinear birefringence, and self-extinguishing of the beam due to”critical opalescence,” critically enhanced light scattering at the pre-transition region of nematic-isotropic phase transition. All these processes have large application potential for laser beam control and characterization techniques.

scholarly journals Crystallographic and optical study of LiNb1 − xTaxO3

2017 ◽  
Vol 73 (3) ◽  
pp. 498-506 ◽  
Author(s):  
S. Huband ◽  
D. S. Keeble ◽  
N. Zhang ◽  
A. M. Glazer ◽  
A. Bartasyte ◽  
...  
Keyword(s):  
Phase Transition ◽  
Lithium Niobate ◽  
Lithium Tantalate ◽  
Flux Growth ◽  
Structural Studies ◽  
Optical Study ◽  
X Ray Diffraction ◽  
Growth Technique ◽  
X Ray ◽  
Li Content

Powders of lithium niobate-tantalate across the full compositional range have been made and crystals grown using a lithium vanadate flux growth technique. The Li-content of a lithium tantalate crystal has been determined using the zero-birefringence temperature and Curie measurements, confirming the Li content is between that of congruent and stoichiometric crystals. X-ray diffraction measurements show the Nb/Ta displacement and octahedral tilt both decrease as the Ta content is increased. This also results in a decrease in the lattice parameters from lithium niobate to lithium tantalate. Birefringence measurements on the crystals as a function of temperature have been used to determine the point that the crystals become zero-birefringent, and by comparison with the structural studies have confirmed that it is not related to a phase transition and the structures remain polar through the zero-birefringence points.

Optical Study of the Phase Transition in Phenanthrene Single Crystals

1974 ◽  
Vol 29 (1) ◽  
pp. 151-154 ◽  
Author(s):  
L. J. Soltzberg ◽  
Pamela A. Piliero ◽  
Madilyn R. Shea
Keyword(s):  
Phase Transition ◽  
Single Crystals ◽  
Optical Study
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