Demonstration and stabilization of a 2x4 HEB array receiver at 1.4 THz based on a Fourier phase grating local oscillator

J. R. Silva, X. Liu, B. Mirzaei, Y. C. Luo, D. J. Hayton, J. R. Gao, Christopher Groppi

Research output: Contribution to conferencePaper

Abstract

This paper is a report on the demonstration and stabilization of a 2x4 NbN hot electron bolometer (HEB) array receiver for GUSTO based on a multiple beam local oscillator (LO). Through the combination of a FIR Gas laser and a Fourier phase grating we were able to generate a 8 beam pattern at 1.4 THz. For the array demonstration, it used a 2x2 HEB mixer array which was translated vertically to match the full 2x4 LO beam pattern. Here two lens with a 60 mm were applied to reduce the beam pattern divergence, allowing for a 12 mm spacing between the beams to be achieved at 130 mm from the grating. To stabilize the array receiver, we introduced a new stabilization method, requiring only a voice coil PID controlled loop between the beam originated from the gas laser and a given pumped pixel. The total power Allan time measurements indicate a five times improvement on a two-pixel system stability.

Original languageEnglish (US)
StatePublished - Jan 1 2017
Event28th International Symposium on Space Terahertz Technology, ISSTT 2017 - Cologne, Germany
Duration: Mar 13 2017Mar 15 2017

Other

Other28th International Symposium on Space Terahertz Technology, ISSTT 2017
CountryGermany
CityCologne
Period3/13/173/15/17

Fingerprint

Gas lasers
Bolometers
Hot electrons
bolometers
hot electrons
stabilization
Demonstrations
Stabilization
receivers
Pixels
oscillators
gratings
electron
Time measurement
System stability
Lenses
pixel
gas lasers
laser
pixels

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Computer Networks and Communications
  • Space and Planetary Science
  • Radiation
  • Electrical and Electronic Engineering

Cite this

Silva, J. R., Liu, X., Mirzaei, B., Luo, Y. C., Hayton, D. J., Gao, J. R., & Groppi, C. (2017). Demonstration and stabilization of a 2x4 HEB array receiver at 1.4 THz based on a Fourier phase grating local oscillator. Paper presented at 28th International Symposium on Space Terahertz Technology, ISSTT 2017, Cologne, Germany.

Demonstration and stabilization of a 2x4 HEB array receiver at 1.4 THz based on a Fourier phase grating local oscillator. / Silva, J. R.; Liu, X.; Mirzaei, B.; Luo, Y. C.; Hayton, D. J.; Gao, J. R.; Groppi, Christopher.

2017. Paper presented at 28th International Symposium on Space Terahertz Technology, ISSTT 2017, Cologne, Germany.

Research output: Contribution to conferencePaper

Silva, JR, Liu, X, Mirzaei, B, Luo, YC, Hayton, DJ, Gao, JR & Groppi, C 2017, 'Demonstration and stabilization of a 2x4 HEB array receiver at 1.4 THz based on a Fourier phase grating local oscillator', Paper presented at 28th International Symposium on Space Terahertz Technology, ISSTT 2017, Cologne, Germany, 3/13/17 - 3/15/17.
Silva JR, Liu X, Mirzaei B, Luo YC, Hayton DJ, Gao JR et al. Demonstration and stabilization of a 2x4 HEB array receiver at 1.4 THz based on a Fourier phase grating local oscillator. 2017. Paper presented at 28th International Symposium on Space Terahertz Technology, ISSTT 2017, Cologne, Germany.
Silva, J. R. ; Liu, X. ; Mirzaei, B. ; Luo, Y. C. ; Hayton, D. J. ; Gao, J. R. ; Groppi, Christopher. / Demonstration and stabilization of a 2x4 HEB array receiver at 1.4 THz based on a Fourier phase grating local oscillator. Paper presented at 28th International Symposium on Space Terahertz Technology, ISSTT 2017, Cologne, Germany.
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