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Infrared optical properties of silica aerogel substrates

MOHAMED ABDEL-RAHMAN1,* , NACER DEBBAR2

Affiliation

  1. Prince Sultan Advanced Technologies Research Institute, College of Engineering, King Saud University, Riyadh, Saudi Arabia 11421
  2. Electrical Engineering Department, College of Engineering, King Saud University, Riyadh, Saudi Arabia 11421

Abstract

In this letter, we report the infrared optical properties of a novel silica aerogel substrate. The properties were measured at room temperature using spectroscopic ellipsometry in the wavelength range from 8 to 14 μm. The measurements gave a refractive index in the range 1.01 to 1.09 and an extinction coefficient variation between approximately 0.0096 to 0.0104. These results confirm the effectiveness of using silica aerogel as a substrate for antenna-coupled microbolometer detectors..

Keywords

Silica aerogel, Spectroscopic infrared ellipsometry, Low refractive index substrate.

Citation

MOHAMED ABDEL-RAHMAN, NACER DEBBAR, Infrared optical properties of silica aerogel substrates, Optoelectronics and Advanced Materials - Rapid Communications, 6, 5-6, May-June 2012, pp.532-534 (2012).

Submitted at: April 7, 2012

Accepted at: June 6, 2012