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DIEGO PARDO

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Papers by DIEGO PARDO

Research paper thumbnail of Extracting Material Properties from a Liquid Crystal Cell Using Terahertz Spectroscopy

2022 47th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz)

Research paper thumbnail of Waveguide integration of a >4.7-THz quantum-cascade laser

We have demonstrated waveguide integration of terahertz quantum cascade lasers (THz QCLs) at freq... more We have demonstrated waveguide integration of terahertz quantum cascade lasers (THz QCLs) at frequencies above 4.7 THz. A precision micromachining technique, followed by diamond-turning and electroless-plating has been used to manufacture hollow rectangular waveguides with integrated diagonal feedhorns. We show that surface roughness at the 1μm level is achieved, enabling outcoupling of radiation in the 4.75–5.05 THz band, with a divergence angle of 5° along the plane of the QCL substrate.

Research paper thumbnail of Development of Advanced Terahertz Optics Using Liquid Crystals

2021 46th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz), 2021

Research paper thumbnail of Room temperature ultrafast InGaAs Schottky diode based detectors for terahertz spectroscopy

Infrared Physics & Technology, 2019

Highlights: InGaAs Schottky diode devices for terahertz detection are described. Their performanc... more Highlights: InGaAs Schottky diode devices for terahertz detection are described. Their performance is assessed for responsivity, spectral coverage, and time response. Detected and spectrally analysed coherent synchrotron terahertz radiation emitted by circulating electron bunches in the Diamond Light Source.

Research paper thumbnail of Extracting Material Properties from a Liquid Crystal Cell Using Terahertz Spectroscopy

2022 47th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz)

Research paper thumbnail of Waveguide integration of a >4.7-THz quantum-cascade laser

We have demonstrated waveguide integration of terahertz quantum cascade lasers (THz QCLs) at freq... more We have demonstrated waveguide integration of terahertz quantum cascade lasers (THz QCLs) at frequencies above 4.7 THz. A precision micromachining technique, followed by diamond-turning and electroless-plating has been used to manufacture hollow rectangular waveguides with integrated diagonal feedhorns. We show that surface roughness at the 1μm level is achieved, enabling outcoupling of radiation in the 4.75–5.05 THz band, with a divergence angle of 5° along the plane of the QCL substrate.

Research paper thumbnail of Development of Advanced Terahertz Optics Using Liquid Crystals

2021 46th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz), 2021

Research paper thumbnail of Room temperature ultrafast InGaAs Schottky diode based detectors for terahertz spectroscopy

Infrared Physics & Technology, 2019

Highlights: InGaAs Schottky diode devices for terahertz detection are described. Their performanc... more Highlights: InGaAs Schottky diode devices for terahertz detection are described. Their performance is assessed for responsivity, spectral coverage, and time response. Detected and spectrally analysed coherent synchrotron terahertz radiation emitted by circulating electron bunches in the Diamond Light Source.

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