English
Related papers

Related papers: Modeling the Temperature-Dependent Material Disper…

200 papers

The material dispersion of the [Ckmim][BF4] (k = 2,3,4,6,7,8,10) family of ionic liquids is measured at several temperatures over a broad spectral range from 300 nm to 1550 nm. The experimental curves are fitted to a modified…

We report comprehensive measurements of the refractive index as a function of wavelength and temperature for four less commonly studied glycols: pentaethylene glycol, hexaethylene glycol, dipropylene glycol (mixture of isomers), and…

Using the Cryogenic, High-Accuracy Refraction Measuring System (CHARMS) at NASA's Goddard Space Flight Center, we have measured the absolute refractive index of five specimens taken from a very large boule of Corning 7980 fused silica from…

Optics · Physics 2008-05-02 Douglas B. Leviton , Bradley J. Frey

We present an experimental method to determine the refractive index of $Al_{x}Ga_{1-x}As$ (x = 0.0 - 0.5) from 300 K to 4 K across the 500 - 1100 nm wavelength range. The values are extracted from spectroscopically observed microcavity…

In order to enable high quality lens designs using calcium fluoride (CaF2) and Heraeus Infrasil 301 (Infrasil) for cryogenic operating temperatures, we have measured the absolute refractive index of these two materials as a function of both…

Optics · Physics 2008-05-02 Douglas B. Leviton , Bradley J. Frey , Timothy J. Madison

We have determined the temperature dependence of the solvation behavior of a large collection of light gases in imidazolium-based Ionic Liquids (ILs) with the help of extensive molecular dynamics simulations. The solubility of molecular…

Silicon and germanium are perhaps the two most well-understood semiconductor materials in the context of solid state device technologies and more recently micromachining and nanotechnology. Meanwhile, these two materials are also important…

Optics · Physics 2009-11-11 Bradley J. Frey , Douglas B. Leviton , Timothy J. Madison

Chromatic dispersion and thermal coefficients of 6 hygroscopic liquids: ethylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, propylene glycol (propane-1,2-diol), and glycerol were measured in the range from 390 to…

In this work we present a refractive index sensor based on the leaky radiation of a microfiber. The 5.3um diameter microfiber is fabricated by drawing a commercial optical fiber. When the microfiber is immersed into a liquid with larger…

Optics · Physics 2014-05-20 F. Gao , H. Liu , C. Sheng , C. Zhu , S. N. Zhu

The dispersive part of the refractive index of vanadium is determined by measuring the angular displacement of the first order diffraction peak of a V/Fe superlattice. The measurements were made using elliptically polarized synchrotron…

Materials Science · Physics 2012-01-04 Martin Magnuson , Coryn F. Hague

Aqueous dispersion of Laponite at low ionic concentration is of interest since it undergoes structural evolution with respect to time, which is usually termed as ageing. In this work we study the refractive index behavior as a function of…

Soft Condensed Matter · Physics 2008-01-11 N. V. N. Ravi Kumar , K. Muralidhar , Yogesh M. Joshi

Determination of refractive index of micro-disks of a calcinated ($1100^\circ$C in air) photo-resist SZ2080$^\mathrm{TM}$ was carried out using transmission and reflection spectroscopy. Interference fringes at specific…

We have been developing a CdZnTe immersion grating for a compact high-dispersion mid-infrared spectrometer (wavelength range 10--18 $\mu$m, spectral resolution $R = \lambda/\Delta \lambda > 25,000$, operating temperature $T < 20$ K). Using…

Instrumentation and Methods for Astrophysics · Physics 2025-04-24 Umi Enokidani , Hideo Matsuhara , Takao Nakagawa , Shunsuke Baba , Yasuhiro Hirahara , Ryoichi Koga , Yuan LI , Biao Zhao , Daiki Takama , Hiroshi Sasago , Takehiko Wada

The theory of summation of electromagnetic line transitions is used to tabulate the Taylor expansion of the refractive index of humid air over the basic independent parameters (temperature, pressure, humidity, wavelength) in five separate…

Optics · Physics 2007-05-23 Richard J. Mathar

A new system, consisting of a double channel Fabry Perot etalon and laser diodes emitting around 780 nm is described and proposed to be used for air refractive index measurements. The principle of this refractometer is based on frequency…

Optics · Physics 2007-05-23 N. -E. Khélifa , H. Fang , J. Xu , P. Juncar , M. Himbert

The measurement and control of the temperature in microscopic systems, which are increasingly required in diverse applications, are fundamentally important. Yet, the measurement of the three-dimensional (3D) temperature distribution in…

Laboratory results of the optical properties of vapor-deposited water ice, specifically the refractive index and extinction coefficient, are available mainly for a selective set of wavelengths and a limited number of deposition…

Instrumentation and Methods for Astrophysics · Physics 2022-02-09 Jiao He , Sharon J. M. Diamant , Siyu Wang , Haochuan Yu , Will R. M. Rocha , Marina Rachid , Harold Linnartz

In order to explain the positive temperature coefficient of the visible index of refraction of fused silica I develop a simple model which assumes a single ultraviolet resonance. Assuming thermal broadening and using the Kramers- Kronig…

Materials Science · Physics 2009-10-30 J. I. Katz

PASCO scientific 012-05187C Precision Interferometer is used in Michelson mode to investigate wavelengths and refractive indices. From varying the distance of the movable mirror in the Michelson setup the wavelength of the HeNe laser beam…

Instrumentation and Detectors · Physics 2020-01-08 Kamyar Modjtahedzadeh

We have measured near normal incidence far infrared (FIR) reflectivity spectra of a single crystal of TbMnO3 from 10K to 300K in the spectral range of 50 cm$^{-1}$ to 700 cm$^{-1}$. Fifteen transverse optic (TO) and longitudinal optic (LO)…

Materials Science · Physics 2015-05-13 Pradeep Kumar , Surajit Saha , C. R. Serrao , A. K. Sood , C. N. R. Rao
‹ Prev 1 2 3 10 Next ›