Efficiency of multi-beam Fourier phase gratings at 1.4 THz

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

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

We compare the results of simulated and measured power efficiency and far-field beam pattern, for two reflective Fourier phase gratings, designed to generate 2 x 2 and 2 x 4 beams respectively from a single-beam, coherent source at 1.4 THz. The designed surface structures were manufactured on aluminum plates by a computer numerical control (CNC) micro-milling machine. Despite small differences between the designed and fabricated gratings, we measured power efficiencies of both gratings to be around 70%, which is in a good agreement with the simulated values. We also find a good agreement between the simulated and measured diffracted beam size and spatial distribution. We demonstrate the application of both gratings as multiple beam local oscillators to simultaneously pump (or operate) a 4-pixel array of superconducting heterodyne mixers.

Original languageEnglish (US)
Pages (from-to)6581-6588
Number of pages8
JournalOptics Express
Volume25
Issue number6
DOIs
StatePublished - Mar 20 2017

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gratings
power efficiency
milling machines
numerical control
coherent sources
far fields
spatial distribution
pixels
oscillators
pumps
aluminum

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Mirzaei, B., Silva, J. R. G., Luo, Y. C., Liu, X. X., Wei, L., Hayton, D. J., ... Groppi, C. (2017). Efficiency of multi-beam Fourier phase gratings at 1.4 THz. Optics Express, 25(6), 6581-6588. https://doi.org/10.1364/OE.25.006581

Efficiency of multi-beam Fourier phase gratings at 1.4 THz. / Mirzaei, B.; Silva, J. R G; Luo, Y. C.; Liu, X. X.; Wei, L.; Hayton, D. J.; Gao, J. R.; Groppi, Christopher.

In: Optics Express, Vol. 25, No. 6, 20.03.2017, p. 6581-6588.

Research output: Contribution to journalArticle

Mirzaei, B, Silva, JRG, Luo, YC, Liu, XX, Wei, L, Hayton, DJ, Gao, JR & Groppi, C 2017, 'Efficiency of multi-beam Fourier phase gratings at 1.4 THz', Optics Express, vol. 25, no. 6, pp. 6581-6588. https://doi.org/10.1364/OE.25.006581
Mirzaei B, Silva JRG, Luo YC, Liu XX, Wei L, Hayton DJ et al. Efficiency of multi-beam Fourier phase gratings at 1.4 THz. Optics Express. 2017 Mar 20;25(6):6581-6588. https://doi.org/10.1364/OE.25.006581
Mirzaei, B. ; Silva, J. R G ; Luo, Y. C. ; Liu, X. X. ; Wei, L. ; Hayton, D. J. ; Gao, J. R. ; Groppi, Christopher. / Efficiency of multi-beam Fourier phase gratings at 1.4 THz. In: Optics Express. 2017 ; Vol. 25, No. 6. pp. 6581-6588.
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