Bandwidth-tunable optical spatial filters with nanoparticle arrays
نویسندگان
چکیده
منابع مشابه
Tunable Optical Filters for Space Exploration
Spectrally tunable liquid crystal filters provide numerous advantages and several challenges in space applications. We discuss the tradeoffs in design elements for tunable liquid crystal birefringent filters with special consideration required for space exploration applications. In this paper we present a summary of our development of tunable filters for NASA space exploration. In particular we...
متن کاملBandwidth-variable tunable optical filter unit for illumination and spectral imaging systems using thin-film optical band-pass filters.
An optical filter unit is demonstrated, which uses two successively arranged tunable thin-film optical band-pass filters and allows for simultaneous adjustment of the central wavelength in the spectral range 522-555 nm and of the spectral bandwidth in the range 3-16 nm with a wavelength switching time of 8 ms∕nm. Different spectral filter combinations can cover the complete visible spectral ran...
متن کاملTunable surface-enhanced Raman scattering from large gold nanoparticle arrays.
Raman signal enhancements in excess of 10(7) can be achieved at near-infrared wavelengths when mid-nanometer sized gold particles self-organize into close-packed planar arrays. These substrates generate stable surface-enhanced Raman scattering which changes dramatically as a function of periodic structure and excitation wavelength.
متن کاملFully Tunable Silicon Nanowire Arrays Fabricated by Soft Nanoparticle Templating.
We demonstrate a fabrication breakthrough to produce large-area arrays of vertically aligned silicon nanowires (VA-SiNWs) with full tunability of the geometry of the single nanowires and of the whole array, paving the way toward advanced programmable designs of nanowire platforms. At the core of our fabrication route, termed "Soft Nanoparticle Templating", is the conversion of gradually compres...
متن کاملL2 Vector Median Filters on Arrays with Reconfigurable Optical Buses
ÐIn spite of their good filtering characteristics for vector-valued image processing, the usability of vector median filters is limited by their high computational complexity. Given an N N image and a W W window, the computational complexity of vector median filter is O W 4N2. In this paper, we design three fast and efficient parallel algorithms for vector median filtering based on the 2-norm ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Optics Express
سال: 2014
ISSN: 1094-4087
DOI: 10.1364/oe.22.012499