Dr. Faouzi M. Boussaha Profile

Dr. Faouzi M. Boussaha

at Observatoire de Paris

SPIE Involvement:

Author

Publications (11)

Proceedings Article | 31 August 2022 Poster + Paper

Readout electronics for kinetic inductance detectors for COSMO

G. Conenna, A. Limonta, M. Zannoni, G. Coppi, F. Boussaha, A. Tartari, M. Gervasi, F. Nati, A. Passerini, P. de Bernardis, A. Coppolecchia, G. D'Alessandro, S. Masi, A. Paiella, M. Bersanelli, C. Franceschet, E. Mazan, A. Mennella

Proceedings Volume 12190, 121901B (2022) https://doi.org/10.1117/12.2629216

KEYWORDS: Electronics, Field programmable gate arrays, Transceivers, Sensors, Interference (communication), Inductance, Cryogenics, Compton scattering, Resonators, Niobium

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Proceedings Article | 31 August 2022 Poster + Paper

Design of an on-chip integrated 230 GHz dual-polarization balanced SIS receiver for multi-pixel array applications

Jakob Wenninger, Christine Chaumont, Faouzi Boussaha, Boon-Kok Tan

Proceedings Volume 12190, 121902U (2022) https://doi.org/10.1117/12.2626929

KEYWORDS: Superconducting detectors, Heterodyne photomixing, Detector arrays, Polarimetric sensing, Polarimetry, Receivers, Antennas, Waveguides, Polarization, Transformers, Quartz, Device simulation, Signal processing, Niobium

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Proceedings Article | 31 August 2022 Poster + Paper

A compact kinetic inductance travelling wave parametric amplifier with continuous periodic loading structure

Joseph Longden, Christine Chaumont, Faouzi Boussaha, Boon-Kok Tan

Proceedings Volume 12190, 121902X (2022) https://doi.org/10.1117/12.2627037

KEYWORDS: Amplifiers, Computer aided design, Modulation, Inductance, 3D modeling, Phase matching, Superconductors, Signal attenuation

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Proceedings Article | 6 October 2021 Paper

Preliminary characterisation of titanium nitride thin film at 300 mK for the development of kinetic inductance travelling wave parametric amplifiers

Joseph Longden, Faouzi Boussaha, Christine Chaumont, Kitti Ratter, Boon-Kok Tan

Proceedings Volume 11881, 1188113 (2021) https://doi.org/10.1117/12.2600853

KEYWORDS: Bridges, Tin, Thin films, Amplifiers, Inductance, Superconductors, Signal detection, Titanium, Signal attenuation, Temperature metrology

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Proceedings Article | 12 July 2018 Paper

In-lab testing of six-level phase mask coronagraphs onto the high-contrast imaging THD2 bench

Fabien Patru, Pierre Baudoz, Raphaël Galicher, Faouzi Boussaha, Josiane Firminy, Qing Cao, Kai Wang, Lujing Xing, Marion Bonafous, Axel Potier

Proceedings Volume 10703, 107032L (2018) https://doi.org/10.1117/12.2314152

KEYWORDS: Etching, Coronagraphy, Signal attenuation, Manufacturing, Data modeling, Exoplanets, Reactive ion etching, Optical lithography

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While radial velocity and transit techniques are efficient to probe exoplanets with short orbits, the study of long-orbit planets requires direct imaging and coronagraphic techniques. However, the coronagraph must deal with planets that are 10⁴ to 10¹⁰ fainter than their hosting star at a fraction of arcsecond, requiring efficient coronagraphs at short angular separation. Phase masks proved to be a good solution in monochromatic or limited spectral bandwidth but expansion to broadband requires complex phase achromatization. Solutions use photonic crystals, subwavelength grating or liquid crystal polymers but their manufacturing remains complex. An easier solution is to use photolithography and reactive ion etching and to optimize the azimuthal phase distribution like achieved in the six-level phase mask (SLPM) coronagraph (Hou et al. 2014). We present here the laboratory results of two SLPM coronagraphs enabling high-contrast imaging in wide-band. The SLPM is split in six sectors with three different depths producing three levels of optical path difference and yielding to uniform phase shifts of 0, π or 2π at the specified wavelength. Using six sectors instead of four sectors enables to mitigate the chromatic effects of the SLPM compared to the FQPM (Four-Quadrant Phase Mask) while keeping the manufacturing easy. Following theoretical developments achieved by University of Shanghai and based on our previous experience to fabricate FQPM components, we have manufactured SLPM components by reactive ion etching at Paris Observatory and we have tested it onto the THD2 facility at LESIA. The THD2 bench was built to study and compare high-contrast imaging techniques in the context of exoplanet imaging. The bench allows reducing the starlight below a 10⁻⁸ contrast level in visible/near-infrared. In this paper, we show that the SLPM is easy to fabricate at low cost and is easy to implement with a unique focal plane mask and no need of pupil apodization. Detection of a planet can be achieved at small inner working angle down to 1 λ/D. The on-axis attenuation of the best SLPM component reaches 2 × 10⁻⁵ at λ = 800 nm and is better than 10⁻⁴ in intensity over a 10% spectral bandwidth. Along the diagonal transition, we show that the off-axis transmission is attenuated by less than 3% over a 10% bandwidth and will need to be calibrated. Any etching imperfections can affect the SLPM performance, by lowering the on-axis attenuation and by changing the optimal wavelength. Despite few nanometers of uncertainty for etching the depths, we show that this first component can provide a high-contrast attenuation in laboratory

Proceedings Article | 22 July 2016 Paper

Development and characterization of Four-Quadrant Phase Mask coronagraph (FQPM)

M. Bonafous, R. Galicher, P. Baudoz, J. Firminy, F. Boussaha

Proceedings Volume 9912, 99126J (2016) https://doi.org/10.1117/12.2234497

KEYWORDS: Exoplanets, Coronagraphy, Photomasks, Point spread functions, Optical lithography, Lithography, Photoresist materials, Control systems, Optical microscopes, Scanning electron microscopy

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Proceedings Article | 28 August 2014 Paper

High contrast imaging on the THD bench: progress and upgrades

R. Galicher, P. Baudoz, J. R. Delorme, J. Mazoyer, G. Rousset, J. Firminy, F. Boussaha, M. N'Diaye, K. Dohlen, A. Caillat

Proceedings Volume 9143, 91435A (2014) https://doi.org/10.1117/12.2055902

KEYWORDS: Coronagraphy, Deformable mirrors, Stars, Exoplanets, Cameras, Wavefront sensors, Mirrors, Prototyping, Colorimetry, Speckle

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Proceedings Article | 24 September 2013 Paper

Tunable THz source using superconducting tunnel junctions

F. Boussaha, A. Féret, C. Chaumont, L. Loukitch, T. Vacelet

Proceedings Volume 8846, 88460L (2013) https://doi.org/10.1117/12.2026955

KEYWORDS: Sensors, Magnetism, Superconductors, Detector arrays, Signal detection, Terahertz radiation, Magnetic sensors, Niobium, Extremely high frequency, Capacitance

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Proceedings Article | 24 September 2012 Paper

Terahertz-frequency waveguide HEB mixers for spectral line astronomy

Faouzi Boussaha, Jonathan Kawamura, Jeffery Stern, Cecile Jung, Anders Skalare, Victor White

Proceedings Volume 8452, 845211 (2012) https://doi.org/10.1117/12.926666

KEYWORDS: Waveguides, Terahertz radiation, Silicon, Receivers, Metals, Micromachining, Deep reactive ion etching, Astronomy, Double sideband modulation, Sensors

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Proceedings Article | 24 April 2003 Paper

Submillimeter mixers based on superconductive parallel junction arrays

Faouzi Boussaha, Morvan Salez, Yan Delorme, Alexandre Feret, Benoit Lecomte, Karl Westerberg, Michel Chaubet

Proceedings Volume 5116, (2003) https://doi.org/10.1117/12.498857

KEYWORDS: Niobium, Receivers, Heterodyning, Fourier transforms, Optical lithography, Semiconducting wafers, Aluminum, Double sideband modulation, Gold, Temperature metrology

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Proceedings Article | 17 February 2003 Paper

30%-bandwidth tunerless SIS mixer of quantum-limited sensitivity for Herschel/HIFI band 1

Morvan Salez, Yan Delorme, I. Peron, Benoit Lecomte, Frederic Dauplay, Faouzi Boussaha, J. Spatazza, A. Feret, J. Krieg, Karl-Friedrich Schuster

Proceedings Volume 4855, (2003) https://doi.org/10.1117/12.459365

KEYWORDS: Receivers, Waveguides, Double sideband modulation, Heterodyning, Fourier transforms, Magnetism, Cryogenics, Connectors, Niobium, Prototyping

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Showing 5 of 11 publications

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