NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.
Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.
An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Absolute Refractive Indices and Thermal Coefficients of Fused Silica and Calcium Fluoride Near 193 nm
Published
Author(s)
John H. Burnett, Ulf Griesmann, M Walhout, J L. Dehmer, J R. Roberts, R Gupta
Abstract
The refractive indices of several fused silica and calcium fluoride samples from different suppliers were measured with the minimum deviation method in the deep UV between 191 and 196 nm with a standard uncertainty of 7 ppm. For both materials the dispersion dn/dλ near 193 nm and 20 C was determined. In addition, we measured the thermal coefficinets of the refractive index near 193 nm and between 15 and 25 C.
Burnett, J.
, Griesmann, U.
, Walhout, M.
, Dehmer, J.
, Roberts, J.
and Gupta, R.
(1998),
Absolute Refractive Indices and Thermal Coefficients of Fused Silica and Calcium Fluoride Near 193 nm, Applied Optics
(Accessed October 11, 2025)