refractive index of silicon
OSA Refractive indexes and temperature coefficients of
The refractive indexes and their variations with temperature for silicon and germanium have been measured over the 95–298-K and 2.5–12-μm ranges. Data are given for the refractive index that are in reasonable agreement with those of previous investigators. For dn/dT the values are independent of wavelength and are approximately 1.5 10−4 (K)−1 and 4.0 10−4 (K)−1 for silicon
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Empirical model for the temperature dependence of silicon
An accurate model for the silicon refractive index including its temperature and wavelength dependence is critically important for many disciplines of science and technology. Currently such a model for temperatures above 22°C in the optical communication bands is not available. The temperature dependence in the spectral response of integrated echelle grating filters made in silicon-on
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Correlation of refractive index and silicon content of
· The refractive index of plasma-deposited silicon nitride and silicon oxynitride films may be used to estimate the atomic per cent silicon in the films. This linear correlation is different from previously reported correlations and can even be applied to high temperature low pressure chemically vapour deposited silicon oxynitride films.
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Thickness and refractive index measurement of a silicon
The geometrical thickness and refractive index of a silicon wafer was determined from the optical thickness using phase information obtained in the spectral domain. In a feasibility test the geometrical thickness and refractive index of a wafer were measured to be 334.85 μm and 3.50 respectively.
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Temperature-dependent refractive index of silicon and
· Keywords Refractive index silicon germanium cryogenic infrared refractometer thermo-optic coefficient CHARMS 1. INTRODUCTION Historically few accurate refractive index measurements of infrared materials have been made at cryogenic temperatures.
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Silicon Photonics Designing and Prototyping Silicon
· The y-component of the E-field propagating in the low-refractive-index confinement case for a silicon waveguide with a length of 10 um.. Final Thoughts on Silicon Waveguides. This is the first blog post in the Silicon Photonics blog series where we will discuss different optical components in detail and how a finite element analysis tool such as COMSOL Multiphysics can help design these
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Temperature-dependent refractive index of silicon and
· Keywords Refractive index silicon germanium cryogenic infrared refractometer thermo-optic coefficient CHARMS 1. INTRODUCTION Historically few accurate refractive index measurements of infrared materials have been made at cryogenic temperatures.
Get PriceRefractive index database refractive index of silicon glass
· Refractive index basics. This page on refractive index basics covers plots of refractive index of silicon and refractive index of glass.The refractive index database link is also mentioned. Refractive index is the ratio of velocity of light in free space to velocity of light in the medium for which it
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OSA Uncertainty improvement of OSA OSA Publishing
We have proposed a modified method to improve the measurement uncertainty of the geometrical thickness and refractive index of a silicon wafer. Because measurement resolution based on Fourier domain analysis depends on the spectral bandwidth of a light source directly a femtosecond pulse laser having the broad spectral bandwidth of about 100 nm was adopted as a new light source.
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Optical properties of Silicon (Si)
· Refractive index n versus photon energy. T = 300 K. (Philipp and Taft 1960 ). Experimental (dashed line) and theoretical (solid line) values of reflectance versus photon energy for Si. (Chelikowsky and Cohen 1976 ). Low-level absorption spectrum of high purity Si at
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Optical properties of Silicon (Si)
· Refractive index n versus photon energy. T = 300 K. (Philipp and Taft 1960 ). Experimental (dashed line) and theoretical (solid line) values of reflectance versus photon energy for Si. (Chelikowsky and Cohen 1976 ). Low-level absorption spectrum of high purity Si at
Get PriceRefractive index database refractive index of silicon glass
· Refractive index basics. This page on refractive index basics covers plots of refractive index of silicon and refractive index of glass.The refractive index database link is also mentioned. Refractive index is the ratio of velocity of light in free space to velocity of light in the medium for which it
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Temperature-dependent refractive index of silicon and
· Keywords Refractive index silicon germanium cryogenic infrared refractometer thermo-optic coefficient CHARMS 1. INTRODUCTION Historically few accurate refractive index measurements of infrared materials have been made at cryogenic temperatures.
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Refractive index and etched structure of silicon nitride
· Silicon nitride (SiN X) thin films were deposited by means of an RF plasma enhanced chemical vapor deposition (PECVD) reactor using SiH 4 and N 2 gases. The refractive index of the SiN thin films increased from 1.5652 to 2.7621 as the SiH 4 /N 2 flow ratio was increased from 0.16 to 1.66 since the amount of Si in the film increased while that of N decreased as the SiH 4 /N 2 flow ratio was
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Refractive Index of Si Silicon for Thin Film Thickness
The "native" oxide layer that forms in typical ambients must often be taken into account when measuring the thickness or refractive index of very thin films on silicon. For a typical sample of Si the refractive index and extinction coefficient at 632.8 nm are 3.88163 and 0..
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Refractive index of Si3N4 (Silicon nitride)Philipp
Refractive index i n = 2.0167. Extinction coefficient i k =. Created with Highcharts 5.0.14. Wavelength µm n k. Chart context menu. 1 0.25 0.5 0.75 1.25 1.9 2 2.1 2.2 2.3 2.4 2.5 2.6 RefractiveIndex.INFO Si3N4 (Silicon nitride) Philipp 1973 n 0.207-1.24 µm. n k LogX LogY eV.
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Correlation of refractive index and silicon content of
· The refractive index of plasma-deposited silicon nitride and silicon oxynitride films may be used to estimate the atomic per cent silicon in the films. This linear correlation is different from previously reported correlations and can even be applied to high temperature low pressure chemically vapour deposited silicon oxynitride films.
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Temperature-dependent refractive index of silicon and
· For silicon we report absolute refractive index and thenno-optic coefficient (dn/dT) at temperatures ranging ftom 20 to 300 I< at wavelengths from 1.1 to 5.6 pin while for germanium we cover temperatures ranging from 20 to 300 K and wavelengths from 1.9 to 5.5 pm.
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Thermo-optic coefficient and nonlinear refractive index of
· Here we report on the study of linear (thermo-optic) and nonlinear χ (3) optical properties of relatively high (n ∼ 1.83 at a wavelength of 1.55 μm) refractive index SiON. The detailed characterization performed on a SiON resonator revealed a thermo-optic coefficient close to the one of Si 3 N 4 and a nonlinear refractive index which is nearly three times the one of SiO 2.
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Refractive Index of Amorphous Silicon for Thin Film
Refractive Index of Amorphous Silicon. For a typical sample of Amorphous Silicon the refractive index and extinction coefficient at 632.8 nm are 4.49977 and 0.. Below are files of complete refractive index and extinction coefficients. If the file is not available for download you can request our proprietary file by clicking "Request".
Get PriceSilicon waveguide shows zero refractive indexPhysics World
· Guiding light (expand for full image) Physicists at Harvard University in the US have built a silicon waveguide that exhibits a refractive index of or close to zero when operating at near-infrared telecom wavelengths. The waveguide can transmit energy more efficiently than previous designs offering potential applications in computing and communications.
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Refractive index of sputtered silicon oxynitride layers
· Silicon oxynitride layers were fabricated by RF sputtering from an Si target using a gas mixture of high-purity nitrogen and oxygen. The layers have wide refractive index varying from 2.05 to 1.45 and excellent transparency in the visible and near-infrared range. The refractive index of the layers decreases continuously with the increasing O 2
Get PriceRefractive Index of SiO2 Fused Silica Silica Silicon
Its refractive index varies from 1.55 to 1.40 (for its transparent range 160nm to 3000nm). Because fused silica is optically stable and consistent many use it as a reference or standard for spectroscopic measurements. The details of its refractive index temperature dependence are also well studied.
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Refractive Index of Amorphous Silicon for Thin Film
Refractive Index of Amorphous Silicon. For a typical sample of Amorphous Silicon the refractive index and extinction coefficient at 632.8 nm are 4.49977 and 0.. Below are files of complete refractive index and extinction coefficients. If the file is not available for download you can request our proprietary file by clicking "Request".
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Refractive Index of Porous Silicon SpringerLink
· Refractive index of porous silicon is reviewed in this chapter. Full theoretical solutions can be provided by different effective medium approximation methods such as Maxwell–Garnett s Looyenga s or Bruggeman s. In the case of semiempirical approaches the refractive indices are measured using spectroscopic ellipsometry and then the
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Refractive index of SiC (Silicon carbide)Singh-o
Complex refractive index (n ik) i Refractive index i n = 2.6473 Wavelength µm n k
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Refractive Index Dispersion and Birefringence of Silicon
The refractive index of each of the four common silicon carbide polytypes has been measured over the visible range. The data were analyzed in an attempt to relate the birefringence to the relative hexagonal character of the polytype. A general relationship exists namely that the birefringence increases with increasing hexagonal character of the polytype.
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OSA Uncertainty improvement of OSA OSA Publishing
We have proposed a modified method to improve the measurement uncertainty of the geometrical thickness and refractive index of a silicon wafer. Because measurement resolution based on Fourier domain analysis depends on the spectral bandwidth of a light source directly a femtosecond pulse laser having the broad spectral bandwidth of about 100 nm was adopted as a new light source.
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Temperature-dependent refractive index of silicon and
· For silicon we report absolute refractive index and thenno-optic coefficient (dn/dT) at temperatures ranging ftom 20 to 300 I< at wavelengths from 1.1 to 5.6 pin while for germanium we cover temperatures ranging from 20 to 300 K and wavelengths from 1.9 to 5.5 pm.
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