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A Frequency Selective Surface based focal plane receiver for the OLIMPO balloon-borne telescope

Sumedh Mahashabde (Institutionen för mikroteknologi och nanovetenskap, Kvantkomponentfysik) ; Alexander Sobolev ; Andreas Bengtsson (Institutionen för mikroteknologi och nanovetenskap) ; Daniel Andrén (Institutionen för mikroteknologi och nanovetenskap) ; Mikhail Tarasov (Institutionen för mikroteknologi och nanovetenskap, Kvantkomponentfysik) ; Maria Salatino ; Paolo de Bernardis ; Silvia Masi ; Leonid Kuzmin (Institutionen för mikroteknologi och nanovetenskap, Kvantkomponentfysik)
IEEE Tansactions on Terahertz Science and Technology (2156-342X). Vol. 5 (2014), 1, p. 145-152.
[Artikel, refereegranskad vetenskaplig]

We describe here a focal plane array of Cold-Electron Bolometer (CEB) detectors integrated in a Frequency Selective Surface (FSS) for the 350 GHz detection band of the OLIMPO balloon-borne telescope. In our architecture, the two terminal CEB has been integrated in the periodic unit cell of the FSS structure and is impedance matched to the embedding impedance seen by it and provides a resonant interaction with the incident sub-mm radiation. The detector array has been designed to operate in background noise limited condition for incident powers of 20 pW to 80 pW, making it possible to use the same pixel in both photometric and spectrometric configurations. We present high frequency and dc simulations of our system, together with fabrication details. The frequency response of the FSS array, optical response measurements with hot/cold load in front of optical window and with variable temperature black body source inside cryostat are presented. A comparison of the optical response to the CEB model and estimations of Noise Equivalent power (NEP) is also presented.

Nyckelord: Cold Electron Bolometer, Frequency Selective Surface, OLIMPO



Denna post skapades 2014-10-31. Senast ändrad 2016-06-20.
CPL Pubid: 205170

 

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