Correlation of Glass Density and Refractive Index—Implications to Density Gradient Construction

1984 ◽  
Vol 29 (3) ◽  
pp. 11729J ◽  
Author(s):  
John I. Thornton ◽  
Carol Langhauser ◽  
David Kahane
Keyword(s):  
Refractive Index ◽  
Density Gradient ◽  
Glass Density

scholarly journals Measuring refractive index gradient of sugar solution

2021 ◽  
Vol 2145 (1) ◽  
pp. 012072
Author(s):  
Pattarapon Tanalikhit ◽  
Thanabodi Worakitthamrong ◽  
Nattanon Chaidet ◽  
Wittaya Kanchanapusakit
Keyword(s):  
Refractive Index ◽  
Laser Beam ◽  
Density Gradient ◽  
Laser Beams ◽  
Refractive Index Gradient ◽  
Sugar Solution ◽  
Mathematical Formula ◽  
Shaped Container ◽  
Index Gradient ◽  
Bending Of Light

Abstract To measure refractive index at a particular altitude in a solution with vertical refractive index gradient, a transparent wedge-shaped container was constructed altogether with the development of mathematical formula derived from the Snell’s law. The refractive index of the solution can be calculated by measuring the angles of incoming and outgoing laser beams relative to respective normal line. By varying height of the laser beam, the refractive index as a function of height of a sugar solution was obtained. This technique is applied to investigate Fata Morgana which is a kind of superior mirage resulting from bending of light in a medium with density gradient.

The Effect of Variation Concentration Nd3+ Ions on Physical and Optical Properties of TZBN Glass

2014 ◽  
Vol 896 ◽  
pp. 225-228
Author(s):  
Evi Nurliana ◽  
Riyatun ◽  
Lita Rahmasari
Keyword(s):  
Refractive Index ◽  
Optical Properties ◽  
Absorption Spectrum ◽  
Tellurite Glass ◽  
Nir Spectroscopy ◽  
Melt Quenching ◽  
Covering Density ◽  
Glass Density ◽  
Concentration Of Ions

This study aims to determine the optical and physical properties of TZBN:Nd glass with the composition (mol%) 60TeO2-2Bi2O3-(34-x)ZnO-4Na2O-xNd2O3 with variation of doping x = 0.5; 1.0; 1.5; 2.0. Fabrication has been done by using the melt-quenching technique. Characterization of tellurite glass covering density, refractive index and absorption spectrum of glass. Density of glass have been measured using the Archimedes method. Refractive index of glass have been measured using the Brewster angle at wavelength 746.191 nm. Absorption spectrum measurements using UV-Vis-NIR spectrophotometer Perkin Elmer Lambda 25 in the region of 200-1100 nm. The results of characterization show that density / physical characteristics of glass did not increase when the concentration of ions Nd3+ to TZBN:Nd glass increased. The refractive index of glass will increase as the concentration of ions Nd3+ to TZBN:Nd glass increased. Based on the results of UV-Vis-NIR spectroscopy measurements shows that there are nine significant spectra have been observed in the region of 200-1100 nm, such as at a wavelength of 431 nm, 474 nm, 515 nm, 527 nm, 585 nm, 684 nm, 749 nm, 805 nm, and 878 nm and the highest absorption peak is at a wavelength of 585 nm.

Structure and Property of ZnO Content with Tb3+ Doped Zinc Aluminum Phosphate Glass

2011 ◽  
Vol 117-119 ◽  
pp. 315-318
Author(s):  
Chu Ni Fu ◽  
H.W. Yang ◽  
J.J. Wa ◽  
Chun Hung Lai ◽  
Yi Mu Lee ◽  
...  
Keyword(s):  
Refractive Index ◽  
Structural Properties ◽  
Raman Spectra ◽  
Phosphate Glass ◽  
Fluorescence Intensity ◽  
Fluorescence Spectra ◽  
Zinc Content ◽  
Aluminum Phosphate ◽  
Structure And Property ◽  
Glass Density

This study explores a series of optical, physical and structural properties based on P2O5-Al2O3-ZnO (ZAP) with glass doped 1 mol% Tb2O3, which changed the composition ratio between ZnO and P2O5. The structure and optical of glasses were studies by Raman spectra and fluorescence spectra. The Raman spectra with the zinc content increases, the 650-810 cm-1 at the P-­O­-P bond has no shift, but the intensity of the absorption peak decreased. The fluorescence intensity increases with the ZnO content increases. The glass density and refractive index also increases with the ZnO content increases.

Fabrication and Investigation some Properties of NiO Doped Borosilicate Glasses

2014 ◽  
Vol 979 ◽  
pp. 275-279
Author(s):  
Keerati Kirdsiri ◽  
Nattapon Srisittipokakun ◽  
Jakrapong Kaewkhao ◽  
Pichet Limsuwan
Keyword(s):  
Refractive Index ◽  
Optical Properties ◽  
Bond Length ◽  
Molar Volume ◽  
Borosilicate Glass ◽  
Rice Husk Ash ◽  
Atomic Weight ◽  
Borosilicate Glasses ◽  
Glass Density ◽  
The Difference

The borosilicate glass samples doped with NiO have been fabricated by conventional glass making process and changed the composition of chemicals. Rice husk ash (RHA) was used as a SiO2 source for prepare the glass samples. The physical and optical properties, viz., glass density, molar volume, refractive index and absorption spectra have been studied. The results show the density increased with increasing of NiO amount due to the difference of atomic weight of Si and Ni. The molar volume obtained from the density of glass, depends on changed rates of density and atomic weight. Those values increased when the amount of NiO increase due to the increasing in bond length between atoms. Moreover, the refractive index increased with increasing concentration of NiO.

Hybrid Ordered Hole-Random Hole Optical Fibers

2006 ◽  
Vol 45 ◽  
pp. 2598-2607
Author(s):  
Gary R. Pickrell ◽  
Evgenya S. Smirnova ◽  
Stanton L. De Haven ◽  
Robert S. Rogowski
Keyword(s):  
Refractive Index ◽  
Optical Fibers ◽  
Photonic Band Gap ◽  
Glass Density ◽  
The Matrix ◽  
Potential Applications ◽  
Ordered Array ◽  
Glass Tubes ◽  
Photonic Band

Photonic band gap (PBG) fibers have generated significant interest over the last decade due to the unique set of properties these fibers exhibit. In general, these fibers have been made by drawing a series of glass tubes (which are stacked in an ordered array) into a fiber. These fibers consist of an ordered arrangement of holes or tubes in a glass matrix. In this invited paper we describe a novel type of fiber, called HORHOFs (hybrid ordered random hole optical fibers). In these fibers, the refractive index of the ordered-hole region is controlled by incorporation of very small tubes of glass produced in-situ during the fiber drawing process. The result is a region of controllable glass density inside the “ordered hole”. This allows tailoring of the refractive index of the hole region and of the matrix glass around the holes. Description of the process to produce these new types of fibers, micrographs of some of the fibers produced, some potential applications, and the results of some computer modeling to predict the properties of these fibers, are presented.

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