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 language | English (US) |
|---|---|
| State | Published - Jan 1 2017 |
| Event | 28th International Symposium on Space Terahertz Technology, ISSTT 2017 - Cologne, Germany Duration: Mar 13 2017 → Mar 15 2017 |
Other
| Other | 28th International Symposium on Space Terahertz Technology, ISSTT 2017 |
|---|---|
| Country | Germany |
| City | Cologne |
| Period | 3/13/17 → 3/15/17 |
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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
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 conference › Paper
}
TY - CONF
T1 - Demonstration and stabilization of a 2x4 HEB array receiver at 1.4 THz based on a Fourier phase grating local oscillator
AU - Silva, J. R.
AU - Liu, X.
AU - Mirzaei, B.
AU - Luo, Y. C.
AU - Hayton, D. J.
AU - Gao, J. R.
AU - Groppi, Christopher
PY - 2017/1/1
Y1 - 2017/1/1
N2 - 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.
AB - 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.
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M3 - Paper
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