Light confinement

In a ray picture, the wave vector k can be decomposed in a transverse component kx = kT and a propagation vector kz = p. By simultaneously invoking an antiresonance condition for the round-trip phase shift A

cladding material (M> = 2 -k-v + efficient light confinement in the core for a given set of materials is given by ... 

MECHANISMS OF LIGHT CONFINEMENT AND RESONATOR BASIC FEATURES... 

Other types of optical microcavities employing the DBR mechanism of light confinement include planar annular Bragg resonators (Scheuer, 2005), based on a radial defect surrounded by Bragg reflectors, and their 3-D equivalent, spherical Bragg onion resonators (Liang, 2004). 

Until about I960 it was considered that the minimum diameter for propagation of Tetryl, RDX and PETN in light confinement was 0.125, 0.100 and 0.050-inch respectively. 

Secondary explosives will burn without detonating if unconfined or lightly confined. Some secondary explosives, such as PETN, are difficult to ignite and propagate burning only at slightly elevated ambient pressures... 

Under very light confinement in hemispherical geometry only deflagrations were observed when the fuels (see Table 3) were mixed with air and initiated by high-energy sparks. Flame propagation velocity was increased by turbulence... 

Scott (Ref 41) also investigated the effect of cooling Tetryl on its shock initiation behavior. Confined and lightly confined charges at 1.47 g/cc and 0.100 inch diam were found to have the following pressure thresholds ... 

The structure of an ARROW has the shape of a slab waveguide, i.e., there is only light confinement in the direction orthogonal to the surface of the layers. On the other two axes light is able to propagate freely. This type of waveguide... 

Fig. 15 Light confined in the core interacts with the immobilized reactive material or with the sample though the evanescent field. It decays exponentially in the recognizing medium with the distance from the waveguide-coating interface and its maximum depth (dd) is obtained at the light incident angle Gi. 1, 2 and 3 are different light incident angles...

Fig. 1 A basic waveguide structure with a light-confining film of refractive index and thickness t surrounded by two semiinfinite media of lower refractive Indices n and n.

The rate of growth of phytoplankton (primary productivity) in the oceans is mainly limited by the availability of light and the rate of supply of limiting nutrients (usually accepted to be nitrogen (N), phosphorus (P), silicon (Si) and iron (Fe)).The need for light confines productivity to the upper layers of oceans. Also, in polar waters there will be no phytoplankton growth during the dark winter months. 

L. Novotny, Light Propagation and Light Confinement in Near-Field Optics, Ph.D. thesis, Swiss Federal Institute of Technology, Zurich, Switzerland, 1996. 

Many interesting phenomena and results can be found studying nonlinear optical properties of one-dimensional photonic crystals. The availability of strong light confinement and tailoring of the dispersive properties allows to design and develop new miniaturized devices for photonic circuitry. 

In this work, we report on the fabrication of buried channel waveguide lasers in Nd YAG ceramics by using a two line confinement approach. Light confinement has been achieved between two... 

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