Towards a photonic mid-infrared nulling interferometer in chalcogenide glass

T Gretzinger, S Gross, A Arriola, MJ Withford - Optics Express, 2019 - opg.optica.org
Nulling interferometry enables astronomers to advance beyond the resolving power of
ground-based telescopes with the goal of directly detecting exo-planets. By diminishing the …

Fabrication tolerant chalcogenide mid-infrared multimode interference coupler design with applications for Bracewell nulling interferometry

HDK Goldsmith, N Cvetojevic, M Ireland, S Madden - Optics Express, 2017 - opg.optica.org
Understanding exoplanet formation and finding potentially habitable exoplanets is vital to an
enhanced understanding of the universe. The use of nulling interferometry to strongly …

Low loss mid-infrared ZBLAN waveguides for future astronomical applications

S Gross, N Jovanovic, A Sharp, M Ireland… - Optics …, 2015 - opg.optica.org
Photonic technologies will be at the heart of future terrestrial planet hunting interferometers.
In particular the mid-infrared spectral region between 3.5–4.2 μm is the ideal window for …

Three-dimensional mid-infrared photonic circuits in chalcogenide glass

A Ródenas, G Martin, B Arezki, ND Psaila… - arXiv preprint arXiv …, 2011 - arxiv.org
We report the fabrication of single mode buried channel waveguides for the whole mid-
infrared transparency range of chalcogenide sulphide glasses by means of direct laser …

M-lines characterization of selenide and telluride waveguides for mid-infrared interferometry

L Labadie, C Vigreux-Bercovici, A Pradel, P Kern… - Optics …, 2006 - opg.optica.org
Nulling interferometry is an astronomical technique that requires to combine extremely flat
wavefronts to achieve a deep rejection ratio in order to detect Earth-like planets in the mid …

Measurement of chalcogenide glass optical dispersion using a mid-infrared prism coupler

HA Qiao, NC Anheier, JD Musgrave… - Window and dome …, 2011 - spiedigitallibrary.org
Physical properties of chalcogenide glass, including broadband infrared transparency, high
refractive index, low glass transition temperature, and nonlinear properties, make them …

Improving the extinction bandwidth of MMI chalcogenide photonic chip based MIR nulling interferometers

HD Kenchington Goldsmith, M Ireland, P Ma… - Optics express, 2017 - opg.optica.org
Research into planets beyond our own star system has until recently relied on indirect
imaging methods. Direct imaging methods are now establishing a foothold in the hunt for …

Chalcogenide glass planar MIR couplers for future chip based Bracewell interferometers

HDK Goldsmith, N Cvetojevic, M Ireland… - Optical and Infrared …, 2016 - spiedigitallibrary.org
Photonic integrated circuits are established as the technique of choice for a number of
astronomical processing functions due to their compactness, high level of integration, low …

[HTML][HTML] Scalable photonic-based nulling interferometry with the dispersed multi-baseline GLINT instrument

MA Martinod, B Norris, P Tuthill, T Lagadec… - Nature …, 2021 - nature.com
Characterisation of exoplanets is key to understanding their formation, composition and
potential for life. Nulling interferometry, combined with extreme adaptive optics, is among the …

Solution-processed chalcogenide glass for integrated single-mode mid-infrared waveguides

C Tsay, Y Zha, CB Arnold - Optics express, 2010 - opg.optica.org
Chalcogenide glass materials exhibit a variety of optical properties that make them desirable
for near-and mid-infrared communications and sensing applications. However, processing …