Detectivity comparison of bolometric optical antennas



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Cuadrado, Alexander and López-Alonso, José Manuel and Martínez Antón, Juan Carlos and Ezquerro Rodríguez, José Miguel and González, Francisco Javier and Alda, Javier (2015) Detectivity comparison of bolometric optical antennas. Proceedings of SPIE, 9547 (954735). ISSN 0277-786X

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The practical application of optical antennas in detection devices strongly depends on its ability to produce an acceptable signal-to-noise ratio for the given task. It is known that, due to the intrinsic problems arising from its sub-wavelength dimensions, optical antennas produce very small signals. The quality of these signals depends on the involved transduction mechanism. The contribution of different types of noise should be adapted to the transducer and to the signal extraction regime. Once noise is evaluated and measured, the specific detectivity, D*, becomes the parameter of interest when comparing the performance of antenna coupled devices with other detectors. However, this parameter involves some magnitudes that can be defined in several ways for optical antennas. In this contribution we are interested in the evaluation and comparison of D_ values for several bolometric optical antennas working in the infrared and involving two materials. At the same time, some material and geometrical parameters involved in the definition of noise and detectivity will be discussed to analyze the suitability of D_ to properly account for the performance of optical antennas.

Item Type:Article
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ISBN: 978-162841713-5
Copyright 2015 Society of Photo Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.

Uncontrolled Keywords:detectivity, optical antennas, bolometers, infrared detectors, noise, figures of merit
Subjects:Sciences > Physics > Optics
Medical sciences > Optics > Optical fibers and communication
Medical sciences > Optics > Geometrical and instumental optics
ID Code:37806
Deposited On:23 May 2016 08:58
Last Modified:25 May 2016 08:20

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