Utility of the spread function in reflectometric applications and design

Benjamin K. Tsai; David P. DeWitt; Gerald H. Shaffer

doi:10.1117/12.151532

1 January 1994 Utility of the spread function in reflectometric applications and design

Benjamin K. Tsai, David P. DeWitt, Gerald H. Shaffer

Author Affiliations +

Optical Engineering, Vol. 33, Issue 1, (January 1994). https://doi.org/10.1117/12.151532

Abstract

The macroscopic spread function describes the extent to which radiation is spread in a semitransparent material because of surface and subsurface scattering. The objective here is to investigate the effects of optical and geometrical parameters on the macroscopic spread function of plastic reference samples and reagent strip formats. A new feature is the use of a fast raster area scattering instrument (FRASI) instrument in measuring the spread function data of the plastic samples and reagent strip formats. Experimental measurements show that least spreading is associated with the off-white plastic samples using a wavelength of 700 nm and a reflected angle of 55 deg. The results for the Glucofilm™ reagent strip formats indicate that most spreading occurred with the 45-deg reflected angle and that least spreading is associated with measuring these reagent strips at 800 nm. The spreading curve determined from the experimental data can greatly assist the reflectometer designer in selecting the optimum optical parameters and geometrical dimensions of the reference sample and the reflectometer system.

Citation Download Citation

Benjamin K. Tsai, David P. DeWitt, and Gerald H. Shaffer "Utility of the spread function in reflectometric applications and design," Optical Engineering 33(1), (1 January 1994). https://doi.org/10.1117/12.151532

Published: 1 January 1994

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available