18 May 2006 Performance improvements for pyroelectric infrared detectors
Author Affiliations +
The paper describes the newest layouts and the basic properties of pyroelectric single-element detectors and linear arrays with up to 512 responsive elements which are built on the basis of lithium tantalate. The research aimed to develop detectors with a signal-to-noise ratio that is as high as possible thereby ensuring optimum adjustment of the detectors to their planned application. Typical applications can be found in pyrometry, gas analysis, spectrometry and security technique. It is shown that special technologies (e. g., ion beam etching, absorption layers) are used to manufacture responsive elements for detectors with very high signal-to-noise ratios. For example, a specific detectivity D* (500 K; 10Hz; 1 Hz; τW=1) ≥ 1.5 x 109 cmHz1/2W-1 has been obtained for single-element detectors with a responsive area of [2x2] mm2. The measured peak value of the NEP for a linear array with 256 responsive elements was smaller than 0.5 nW (128 Hz). Moreover, the acceleration responsivity (disturbance variable) of the examined detectors was fundamentally reduced (factor 5) thanks to the application of new chip and detector layouts.
© (2006) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Volkmar Norkus, Volkmar Norkus, Dmitri Chvedov, Dmitri Chvedov, Gerald Gerlach, Gerald Gerlach, Reinhard Köhler, Reinhard Köhler, } "Performance improvements for pyroelectric infrared detectors", Proc. SPIE 6206, Infrared Technology and Applications XXXII, 62062X (18 May 2006); doi: 10.1117/12.664389; https://doi.org/10.1117/12.664389


Bi-material resonant infrared thermal detector and array
Proceedings of SPIE (October 17 2014)
Characterisation Of Hgl_Xcdxte IR Detectors
Proceedings of SPIE (September 10 1987)
Pyroelectric linear arrays and their application
Proceedings of SPIE (September 26 2007)
Pyroelectric infrared arrays and their applications
Proceedings of SPIE (October 23 1997)

Back to Top