Journal ArticleDOI
Application of the needle optimization technique to the design of optical coatings.
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The authors' experience with the application of the needle optimization technique to the design of optical coating is summarized and a physical interpretation of the technique is provided.Abstract:
The authors' experience with the application of the needle optimization technique to the design of optical coating is summarized. A physical interpretation of the technique is provided, and its main features are identified. Guidelines on the application of the needle optimization technique to various types of design problems are given.read more
Citations
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Journal ArticleDOI
Passive radiative cooling below ambient air temperature under direct sunlight
TL;DR: An integrated photonic solar reflector and thermal emitter consisting of seven layers of HfO2 and SiO2 that reflects 97 per cent of incident sunlight while emitting strongly and selectively in the atmospheric transparency window demonstrates that the cold darkness of the Universe can be used as a renewable thermodynamic resource, even during the hottest hours of the day.
Journal ArticleDOI
Radiative cooling: A review of fundamentals, materials, applications, and prospects
TL;DR: In this article, the current state of the art in passive radiative cooling technology is reviewed and updated, and the advanced materials and structures of various radiators, which are popular topics in radiative heating, are presented.
Journal ArticleDOI
OpenFilters: open-source software for the design, optimization, and synthesis of optical filters
Stéphane Larouche,Ludvik Martinu +1 more
TL;DR: The in-house software, called OpenFilters, is released under the GNU General Public License, an open-source license, and allows creation of multilayer and graded-index filters and calculation of reflection, transmission, absorption, phase, group delay, groupdelay dispersion, color, ellipsometric variables, admittance diagram, circle diagram, electric field distribution, and generation of reflection and transmission monitoring curves.
Journal ArticleDOI
Design of wide-angle solar-selective absorbers using aperiodic metal-dielectric stacks
TL;DR: This work investigated the spectral performance of planar aperiodic metal-dielectric multilayer coatings for thermophotovoltaic and solar thermal conversion systems and found excellent spectral selectivity over a wide angular range.
Journal ArticleDOI
Thermodynamic and optical analyses of a hybrid solar CPV/T system with high solar concentrating uniformity based on spectral beam splitting technology
TL;DR: In this paper, a multi-segment mirror hybrid solar concentration photovoltaic/thermal (CPV/T) system using the spectral beam splitting technology is proposed, and its composition, working principle and structural design method are introduced.
References
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Journal ArticleDOI
Refinement of optical multilayer systems with different optimization procedures.
Jerzy A. Dobrowolski,R. A. Kemp +1 more
TL;DR: Ten different optimization methods, representing both local and global minimum seeking algorithms, were applied to the solution of three different optical thin film design problems, finding the relative efficiencies of the various methods.
Journal ArticleDOI
Using apodization functions to reduce sidelobes in rugate filters
TL;DR: Appending gradient-index matching regions and apodization, which is an amplitude modulation of the rugate sinusoidal index profile, are two effective means to reduce and nearly eliminate the sidelobes.
Journal ArticleDOI
Design of Multilayer Filters by Successive Approximations
TL;DR: In this paper, a relaxation method is used to adjust the thickness of the films of a multilayer in order to alter its transmission characteristics in a limited spectral region, which is useful in controlling the thicknesses of the layers in the fabrication of a multi-layer.