Results 131 to 140 of about 21,925,565 (312)

Spectral-Domain Measurements of Birefringence and Sensing Characteristics of a Side-Hole Microstructured Fiber

Sensors, 2013
We experimentally characterized a birefringent side-hole microstructured fiber in the visible wavelength region. The spectral dependence of the group and phase modal birefringence was measured using the methods of spectral interferometry. The phase modal
Waclaw Urbańczyk, Mariusz Makara, Krzysztof Poturaj, Pawel Mergo, Jacek Olszewski, Tadeusz Martynkien, Petr Hlubina   +6 more
doaj   +1 more source

Birefringence of interferential mirrors at normal incidence Experimental and computational study

, 2009
In this paper we present a review of the existing data on interferential mirror birefringence. We also report new measurements of two sets of mirrors that confirm that mirror phase retardation per reflection decreases when mirror reflectivity increases ...
A. Dupays, C. Rizzo, C. Robilliard, C. Wood, D. Jacob, E. Zavattini, F. Bielsa, F. Brandi, G.E. Stedman, G.J. Sprokel, J.L. Hall, M. Born, M. Fouché, M. Mansuripur, M.A. Bouchiat, M.A. Bouchiat, M.A. Bouchiat, P. Micossi, R. Battesti, R. Battesti, R. Cameron, R.W.P. Drever, S. Carusotto, S. Moriwaki, S.-J. Chen, S.C. Bennett, W.-T. Ni   +26 more
core   +1 more source

Interconversion of Optical to Terahertz Pulses in Nonlinear Beta Barium Borate Crystal

Advanced Physics Research, EarlyView.
ABSTRACT Low‐temperature β‐phase barium borate (β‐BBO) is an important nonlinear crystal, widely utilized for optical second‐harmonic (SH) generation. Recent re‐measurements of refractive indices in the terahertz (THz) range reveal that β‐BBO is a positive uniaxial crystal.
Yingyu Guo, Boyuan Chen, Zhangshun Li, Zhiqiang Lan, Huiping Zhang, Lin Xi, Zuanming Jin, Yan Peng, Yiming Zhu   +8 more
wiley   +1 more source

Snapshot Multi-Wavelength Birefringence Imaging

Sensors
A snapshot multi-wavelength birefringence imaging measurement method was proposed in this study. The RGB-LEDs at wavelengths 463 nm, 533 nm, and 629 nm were illuminated with circularly polarized light after passing through a circular polarizer.
Shuang Wang, Xie Han, Kewu Li
doaj   +1 more source

Critical Behavior of Sn2P2S6 and Sn2P2(Se0.28S0.72)6 Crystals under High Hydrostatic Pressures

, 2014
Basing on the temperature dependences of optical birefringence for Sn2P2S6 and Sn2P2(Se0.28S0.72)6 crystals subjected to hydrostatic pressures, we prove unambiguously that Sn2P2S6 reveals a tricritical point on its (p,T)-phase diagram with the ...
Kostyrko, M., Martynyuk-Lototska, I., Vlokh, R., Zapeka, B.   +3 more
core   +1 more source

Histovariability and fossil diagenesis of Pissarrachampsa (Pseudosuchia, Notosuchia, Baurusuchidae) from the Upper Cretaceous of Southeast Brazil

The Anatomical Record, EarlyView.
Abstract Notosuchians were key components of western Gondwanan Cretaceous ecosystems in terrestrial predator niches and exhibited remarkable taxonomic and ecological diversity. Previous research has explored their physiology, metabolism, and histology, revealing varied growth patterns and life history strategies.
Tito Aureliano, Virgínia Maciel, Pedro Victor Buck, Felipe C. Montefeltro, Thiago da S. Marinho, Aline M. Ghilardi   +5 more
wiley   +1 more source

Histology and fossil diagenesis of a pterosaur tooth from the Crato Formation (Lower Cretaceous of Brazil)

The Anatomical Record, EarlyView.
Abstract Pterosaur dental biology remains poorly understood despite its importance for comprehending feeding strategies and flight adaptations. Here, we present the first comprehensive histological analysis of an ornithocheiriform pterosaur tooth from the Lower Cretaceous Crato Formation (Santana Group, Northeast Brazil).
Tito Aureliano, Matheus P. S. Rocha, Francisco P. Lima‐Filho, Aline M. Ghilardi   +3 more
wiley   +1 more source

FEM analysis of a highly birefringent modified slotted core circular PCF for endlessly single mode operation across E to L telecom bands

Journal of the European Optical Society-Rapid Publications
This paper describes an exceptionally high birefringent modified slotted core circular photonic crystal fiber (MSCCPCF). At the 1.55 μm telecommunication wavelength, the proposed fiber structure aims to achieve exceptional birefringence performance ...
Halder Amit, Arafat Yeasin, Ahmed Imtiage, Ahsan Muhammad, Siddiquee Zubairia, Tanshen Riyad, Anower Shamim   +6 more
doaj   +1 more source

Strain-induced improvements on linear and nonlinear optical properties of SrB4O7 crystal

AIP Advances, 2012
Although the high nonlinearity, strontium tetraborate crystal SrB4O7 is angular non-phasematched in UV SHG process due to its low birefringence. In this Letter, we revealed that its birefringence can be significantly enhanced by uniaxial strain based on ...
Zuju Ma, Kechen Wu, Rongjian Sa, Kaining Ding, Qiaohong Li   +4 more
doaj   +1 more source

High-birefringence microfiber Sagnac interferometer based humidity sensor

, 2016
A relative humidity (RH) sensor based on a microfiber Sagnac loop interferometer is proposed and demonstrated. The sensor is formed by fusion splicing a high-birefringence elliptical microfiber into a fiber loop mirror without any humidity sensitive ...
Lipeng Sun, Jie Li, Long Jin, Yang Ran, B. Guan   +4 more
semanticscholar   +1 more source