J
J. R.G. Silva
Researcher at Netherlands Institute for Space Research
Publications - 13
Citations - 89
J. R.G. Silva is an academic researcher from Netherlands Institute for Space Research. The author has contributed to research in topics: Local oscillator & Terahertz radiation. The author has an hindex of 3, co-authored 10 publications receiving 46 citations. Previous affiliations of J. R.G. Silva include Kapteyn Astronomical Institute & University of Groningen.
Papers
More filters
Journal ArticleDOI
8-beam local oscillator array at 4.7 THz generated by a phase grating and a quantum cascade laser.
B. Mirzaei,J. R.G. Silva,D. J. Hayton,Christopher Groppi,Tsung-Yu Kao,Qing Hu,John L. Reno,J. R. Gao +7 more
TL;DR: An 8-beam local oscillator (LO) for the astronomically significant [OI] line at 4.7 THz is presented and the coupled power, taking the optical loss into account, is in consistency with the QCL power value.
Journal ArticleDOI
Efficiency of multi-beam Fourier phase gratings at 1.4 THz.
B. Mirzaei,J. R.G. Silva,Y. C. Luo,Xueyan Liu,Lei Wei,D. J. Hayton,J. R. Gao,Christopher Groppi +7 more
TL;DR: Comparing the results of simulated and measured power efficiency and far-field beam pattern, for two reflective Fourier phase gratings, designed to generate 2 × 2 and 2 × 4 beams respectively from a single-beam, coherent source at 1.4 THz finds a good agreement between the simulate and measured diffracted beam size and spatial distribution.
Journal ArticleDOI
81 supra-THz beams generated by a Fourier grating and a quantum cascade laser
Yuner Gan,B. Mirzaei,J. R.G. Silva,Ali Khalatpour,Qing Hu,Christopher Groppi,Jose V. Siles,Floris van der Tak,Jian-Rong Gao +8 more
TL;DR: A combination of a Fourier grating with an unidirectional antenna coupled 3rd-order distributed feedback (DFB) quantum cascade laser can create an LO with 100 beams or more, enabling a new generation of large heterodyne arrays for astronomical instrumentation.
Journal ArticleDOI
Low noise MgB2 hot electron bolometer mixer operated at 5.3 THz and at 20 K
Yuner Gan,Yuner Gan,B. Mirzaei,B. Mirzaei,J. R.G. Silva,J. R.G. Silva,Jin Chang,Serguei Cherednichenko,F. F. S. van der Tak,F. F. S. van der Tak,J. R. Gao,J. R. Gao +11 more
TL;DR: In this paper, a superconducting MgB2 hot electron bolometer (HEB) mixer working at the frequency of 5.3 GHz with 20 K operation temperature was demonstrated.
Journal ArticleDOI
3.9 THz spatial filter based on a back-to-back Si-lens system.
Yuner Gan,B. Mirzaei,Sebastiaan van der Poel,J. R.G. Silva,Matvey Finkel,Martin Eggens,Marcel L. Ridder,Ali Khalatpour,Qing Hu,Floris van der Tak,Jian-Rong Gao +10 more
TL;DR: With a proper aperture size, the B2B lens system is capable of filtering the non-Gaussian beam from the QCL to a nearly fundamental Gaussian beam, where Gaussicity increases from 74% to 99%, and achieves a transmissivity larger than 30%.