Extreme broadband dichroics: Monte Carlo transmission line modeling for astronomical spectroscopy
Journal of Astronomical Telescopes Instruments and Systems SPIE, the international society for optics and photonics 10:01 (2024) 018005-018005
Structural, Morphological, Optical and Electrical Characterization of Gahnite Ferroan Nano Composite Derived from Fly Ash Silica and ZnO Mixture
Materials MDPI 15:4 (2022) 1388
Integrated optics for nulling interferometry in the thermal infrared: progress and recent achievements
International Conference on Space Optics — ICSO 2010 SPIE (2017)
Abstract:
The search for Earth-like exoplanets, orbiting in the habitable zone of stars other than our Sun and showing biological activity, is one of the most exciting and challenging quests of the present time. Nulling interferometry from space, in the thermal infrared, appears as a promising candidate technique for the task of directly observing extra-solar planets. It has been studied for about 10 years by ESA and NASA in the framework of the Darwin and TPF-I missions respectively. Nevertheless, nulling interferometry in the thermal infrared remains a technological challenge at several levels. Among them, the development of the "modal filter" function is mandatory for the filtering of the wavefronts in adequacy with the objective of rejecting the central star flux to an efficiency of about 105. Modal filtering takes benefit of the capability of single-mode waveguides to transmit a single amplitude function, to eliminate virtually any perturbation of the interfering wavefronts, thus making very high rejection ratios possible. The modal filter may either be based on single-mode Integrated Optics (IO) and/or Fiber Optics. In this paper, we focus on IO, and more specifically on the progress of the on-going "Integrated Optics" activity of the European Space Agency.Cooled optical filters for Q-band infrared astronomy (15-40 μm)
Proceedings of SPIE--the International Society for Optical Engineering SPIE, the international society for optics and photonics 9912 (2016) 991235-991235-11
Determination of the embedded thermo-optical expansion coefficients of PbTe and ZnSe thin film infrared multilayers
Optics Express The Optical Society 23:12 (2015) 16348-16348