Research Publications
Explore peer-reviewed papers, technical articles and conference proceedings featuring Purewavepolarizers technology in scientific research and applications.
Kameshkov et al. 2026, Applied Physics Letters 129, 141701 · placeholder image
Kameshkov et al.
Applied Physics Letters
2026
10 µm Free-Standing Wire Grid Polarizers
A freestanding T-shaped metasurface laser-cut from 10 µm copper film acts as a transmissive THz quarter-wave plate near 0.6 THz. It converts linear to nearly pure circular polarization with efficiency close to the 50% theoretical limit, demonstrated on a 40 mm device by THz time-domain spectroscopy.
The setup was enclosed in a nitrogen-purged atmosphere to prevent water-vapor absorption of THz radiation. The samples were placed behind a commercial free-standing wire grid polarizer (Purewave polarizer) with a fixed polarization direction to purify the incident polarization state during the measurement. …
Borodin et al. 2026, arXiv:2610.05620 · placeholder image
Borodin et al.
arXiv (preprint)
2026
Spectroscopy and Molecular Physics
5 µm Free-Standing Wire Grid Polarizers
Cryogenic, polarization-sensitive THz nanoscopy maps the bulk photovoltaic effect in gated bilayer graphene. Near resonance between the band gap and THz photon energy, the response shows twofold polarization symmetry, trigonal warping and electron–hole asymmetry, linked to quantum band geometry.
Polarization-dependent measurements were performed using a wire-grid polarizer (Pure Wave Polarizers)...
Lechevallier et al. 2026, PCCP 28, 21511 · © The Author(s) · CC BY 4.0 · resized
Lechevallier et al.
Physical Chemistry Chemical Physics
2026
Spectroscopy and Molecular Physics
5 µm Free-Standing Wire Grid Polarizers
A difference-frequency THz spectrometer measures ten water vapour lines between 600 and 1300 GHz. Speed-dependent Voigt fitting with explicit etalon modelling reveals beyond-Voigt line shapes and gives accurate broadening, shift and intensity parameters for spectroscopic databases.
Here, we verified it by recording the transmission signal while quantitatively varying the incident power using a pair of grid polarizers (Purewave). The first polarizer, placed after the emitter and aligned vertically, sets a linear polarization for the THz wave at the cell input.
Kameshkov et al. 2026, Optics & Laser Technology 204, 116035 · placeholder image
Kameshkov et al.
Optics & Laser Technology
2026
Instrumentation and Metrology
10 µm Free-Standing Wire Grid Polarizers
Freestanding THz wire-grid polarizers are cut from thin metal foil with a nanosecond laser, without clean-room lithography. Small grids take about 15 seconds and large devices one to two minutes. The polarizers are characterised by THz time-domain spectroscopy and compared with simulations.
The samples were placed behind a commercial freestanding wire-grid polarizer (Purewave polarizer) with a fixed polarization direction to purify the incident polarization state during the measurement...
Ou et al. 2026, Journal of Applied Physics 139, 123101 · © The Author(s) · CC BY 4.0 · resized
Ou et al.
Journal of Applied Physics
2026
Instrumentation and Metrology
5 µm Free-Standing Wire Grid Polarizers
A compact terahertz generalized ellipsometer uses dual-channel fibre-coupled photoconductive emitters and detectors to capture four independent THz pulses in a single delay scan, with no polarization optics in the measurement. After a one-off calibration with wire-grid polarizers, it accurately characterised a birefringent Al2O3 crystal.
The polarizers (PW005-012, PureWavePolarizers Ltd) feature a high extinction ratio of 80 dB at 1 THz and a high transmission of 0.98 over the range of 0.1–3 THz.
Ohrt et al. 2025, Review of Scientific Instruments 96, 123014 · placeholder image
Ohrt et al.
Review of Scientific Instruments
2025
Instrumentation and Metrology
5 µm Free-Standing Wire Grid Polarizers
A single-shot detector captures the waveform of millijoule-class THz pulses from relativistic laser–foil interactions. Scanning-free solid-state biased coherent detection, a non-collinear geometry and balanced detection resolve spectral content beyond 15 THz from one laser shot, with a method to recover waveforms when detection is imbalanced.
Two ultrabroadband THz wire-grid linear polarizers (THz LPs) are used to enforce horizontal THz polarization. … It is also important to note that while the LPs are broadband (PUREWAVE Polarizers PW005-012-075), they may not maintain ideal polarization across the entire THz spectrum.
Huang et al. 2025, arXiv:2512.06139 · placeholder image
Huang et al.
arXiv (preprint)
2025
Spintronics and Ultrafast Dynamics
5 µm Free-Standing Wire Grid Polarizers
Femtosecond excitation of van der Waals ferroelectrics NbOX₂ (X = I, Br, Cl) produces narrowband THz emission at 3.13, 3.68 and 4.88 THz. Halogen alloying tunes the emission continuously from about 3.1 to 5.8 THz, and electric-field switching of the ferroelectric domains reverses the THz polarity.
Two THz polarizers (PureWave) were placed thereafter to set the detection polarization parallel to the EO detector. The transmittance ratios of a pair of wire grid polarizers (PW005-012, PureWave) for orthogonal polarized THz wave in power spectrum at 3.1, 3.7, and 4.9 THz were estimated to be around 10−6, 10−5, and 2 × 10−5, based [on] open access data from PureWave.
Wu et al. 2025, Photonics Research 13, 2744 · placeholder image
Wu et al.
Photonics Research
2025
10 µm Free-Standing Wire Grid Polarizers
3D-printed Al₂O₃ metasurfaces generate THz vector vortex beams whose topological charge changes along propagation, stepping from +3 to −3 (LCP) and +4 to −4 (RCP) between 22 mm and 42 mm at 0.1 THz, with experiment matching simulation to within 6%.
To accurately characterize the vector modulation properties of the device, a linear polarizer (PW010-025-075) was added in front of the terahertz camera to separate different polarization components.
Rindert et al. 2025, Review of Scientific Instruments 96, 083905 · placeholder image
Rindert et al.
Review of Scientific Instruments
2025
Instrumentation and Metrology
5 µm Free-Standing Wire Grid Polarizers
A terahertz frequency-domain ellipsometer with two continuously rotating meta wave plates measures the full 4 × 4 Mueller matrix at 82–125 and 170–250 GHz. Fast frequency sweeping and a magnetocryostat (±8 T, 4–400 K) enable magnetic resonance measurements, demonstrated on sapphire and nitrogen-doped SiC.
The wire grid polarizers are fabricated from 5 μm diameter tungsten wires (PureWavePolarizers Ltd., Coventry, UK). The wire spacing is 16 μm, and the extinction ratio is at least 100:1 in the frequency range 170–250 GHz.
Coppi et al. 2025, ApJS 279, 30 · © The Author(s) · CC BY 4.0 · resized
Coppi et al.
The Astrophysical Journal Supplement Series
2025
Space Sensing and Astrophysics
10 µm Free-Standing Wire Grid Polarizers
This paper reports on PROTOCALC, a drone-borne W-band (~90 GHz) source for high-precision CMB polarization angle calibration. Integrating an RF chain, wire-grid polarizer and photogrammetry camera, Atacama field tests with CLASS and Simons Observatory achieved 0.045° statistical roll-angle accuracy, showing promise for CMB-S4.
The grid is manufactured by PureWave Polarizers and uses tungsten wires of 10 μm diameter…