thin film opal photonic crystals - Elpub Wuppertal
... much harder to control and manipulate. However, for all-optical components it would be
necessary to control the propagation of photons, similar to the electric current flow in
conventional electronics. In certain dielectric nanostructures, a so-called “Photonic Crystal”
(PhC), a fundamentally new el ...
... Optical (NLO) applications. Pure KDP single crystals and KDP crystals doped with N-N′ allylthiourea were
grown by the method of slow evaporation from aqueous solutions. The grown pure and doped crystals were
confirmed by X-ray single crystal and powder diffraction studies. The pure and doped crystal ...
Controlled Synthesis of Organic/Inorganic van der Waals Solid for
... highly stable excitons, strong exciton absorption, sharp
exciton emission even at room temperature,[28,29] high optical
absorption coefficient, optimal band gap, and long electron/
hole diffusion lengths, which grant their high efficiencies
for energy conversion. The highest efficiency of or ...
IOSR Journal of Applied Physics (IOSRJAP)
... Abstract: Good optical quality single crystals of pure and doped L-Alaninium Maleate (LAM) crystals have
been grown. The crystals have been grown by slow evaporation method at a constant temperature of 35˚C from
its aqueous solution. The grown single crystals of pure and doped LAM were characterized ...
LASER GUIDE - IDEX Optics & Photonics
... Lasers are devices that produce intense beams of
light which are monochromatic, coherent, and highly
collimated. The wavelength (color) of laser light is
extremely pure (monochromatic) when compared to
other sources of light, and all of the photons (energy)
that make up the laser beam have a fixed p ...
growth and characterization of methyl orange doped kap
... of MO doped KAP crystals, these peaks gets shifted
towards the lower frequencies and the absorption
peaks are observed around 2779 cm-1 and 2617 cm-1
showing a red shift in the values. The absorption
peak around 1381 cm-1 corresponds to the -C=O
carboxylates ion symmetric stretching of =O. In the
G030094-00 - DCC
... Focus is on developing data needed for choice between Sapphire and
Fused Silica as substrate materials
Fabrication of Sapphire: 4 full-size Advanced LIGO boules grown, 31.4 x 13
cm; two acquired (one ‘nice’ and one ‘not so nice’)
Many aspects of material development successfully tested
... Key words: Single Crystal, XRD, Optical studies, FTIR, TGA, Micro hardness
Meta-tarbernite 1, its physical properties and relation to Torbernite.
... Crystallography.--The Gunnislake mineral occurs in rosettes or sheaflike aggregates of approximately parallel square plates, bounded by the
planes of a low pyramid, d(102). The latter are rarely measurable, but
a few cITstals afforded rough measurements for the angle c : d, the mean
of six readings ...
N - Széchenyi István Egyetem
... Nonlinear effects in fibers
a timing jitter originating from fluctuations
of the center frequency of the (soliton)
Nanoparticle, NiO, Nanocomposite, Sol-gel, UV
... The expansion fro m single-co mponent material to
composite systems becomes an active area of research
because different composites offer great possibilit ies for
tailoring the performance of the final product. In recent
years, nanoscale transition metal o xides (TMOs) have been
intensively studi ...
Toward single-cycle laser systems
... to an undesired angular dispersion of the beam. This can be partially compensated by using these mirrors in pairs with oppositely oriented wedges. The second drawback is that it seems
to be impossible to make high quality AR-coatings over one or
more than one octave of bandwidth, which have less tha ...
etching of nitinol - Advanced Chemical Etching
... Shape memory is the effect of restoring the original shape of a deformed material by heating it. The
shape-memory effect in NiTi was discovered in the early sixties at the US Naval Ordnance Laboratory
(hence the name Nitinol).
Nitinol can exist in two different solid structures: austenitic or marten ...
FTIR, XRD, TGA Investigations of L
... 2409.81 to 3253.71 cm-1 range. The thermal properties of the as-grown ADP crystals were studied by
thermogravimetric analysis (TGA). The thermal activation energy determined from the TGA curve
using Broido, Piloyan-Novikova (PN) and Coats Redfern (CR) relations were in good agreement with
each other ...
... grown crystals appear almost similar with three stages
of decompositions between 130 and 410 oC followed
by four stages of weight loss.
Fig. 4(a) shows the TGA and DTA
thermograms of LHB crystal indicating the four
stages of weight loss: the first one at 138° C and the
second at 249°C, the third at ...
Monitors - La Salle University
... • Color depth is the number of bits used to specify
the color for each pixel.
• The number of possible colors will be 2 raised to
the color depth. This will be related to the number
of intensity level of the electron guns.
• For example “true color” uses 32 bits and thus has
Efficient Ultrafast Frequency Conversion Sources for the
... In this paper, we describe the recent developments in a new
class of ultrafast frequency conversion sources, offering unprecedented wavelength coverage in the visible and UV at
exceptional average powers and efficiencies. The described systems range from low-pulse-energy, high-repetition-rate femtos ...
Transformation optics applies metamaterials to produce spatial variations, derived from coordinate transformations, which can direct chosen bandwidths of electromagnetic radiation. This can allow for the construction of new composite artificial devices, which probably could not exist without metamaterials and coordinate transformation. Computing power that became available in the late 1990s enables prescribed quantitative values for the permittivity and permeability, the constitutive parameters, which produce localized spatial variations. The aggregate value of all the constitutive parameters produces an effective value, which yields the intended or desired results.Hence, complex artificial materials, known as metamaterials, are used to produce transformations in optical space.The mathematics underpinning transformation optics is similar to the equations that describe how gravity warps space and time, in general relativity. However, instead of space and time, these equations show how light can be directed in a chosen manner, analogous to warping space. For example, one potential application is collecting sunlight with novel solar cells by concentrating the light in one area. Hence, a wide array of conventional devices could be markedly enhanced by applying transformation optics.