Uncooled silicon carbide sensor producing optical signal

Geunsik Lim; Tariq Manzur; Aravinda Kar

doi:10.1117/12.1000118

21 June 2012 Uncooled silicon carbide sensor producing optical signal

Geunsik Lim, Tariq Manzur, Aravinda Kar

Proceedings Volume 8359, Sensors, and Command, Control, Communications, and Intelligence (C3I) Technologies for Homeland Security and Homeland Defense XI; 83591A (2012) https://doi.org/10.1117/12.1000118
Event: SPIE Defense, Security, and Sensing, 2012, Baltimore, Maryland, United States

Abstract

A novel approach will be discussed to design and fabricate sensors for a wide variety of wavelengths by selecting appropriate acceptor levels in a semiconductor material. An n-type 4H-SiC substrate has been doped with gallium using a laser doping method for sensing the MWIR wavelength of 4.21 mm. The incident MWIR photons change the electron densities in the valence band and the acceptor energy levels, modifying the reflectivity of the sensor. This change in the reflectivity is determined with a He-Ne laser as an optical signal and the sensor can be operated at room temperature. The effect of the photon collection optics on the sensor response has been studied. Also the dopant concentration has been found to affect the optical signal.

Citation Download Citation

Geunsik Lim, Tariq Manzur, and Aravinda Kar "Uncooled silicon carbide sensor producing optical signal", Proc. SPIE 8359, Sensors, and Command, Control, Communications, and Intelligence (C3I) Technologies for Homeland Security and Homeland Defense XI, 83591A (21 June 2012); https://doi.org/10.1117/12.1000118

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