phase matching

phase matching

[′fāz ‚mach·iŋ]
(optics)
A condition in which the polarization wave produced by two or more beams of incident radiation in a nonlinear medium has the same phase velocity as a freely propagating wave of the same frequency; the amplitude of the polarization wave is then greatly enhanced.
References in periodicals archive ?
For this, The system will have 2 redundant channels and automatically develop the orders to fulfill the coupling conditions: - equalization of the alternator stator voltage value to that of the network (to the transformation ratio near the tp) to respect the constraints of deviation on the values of the voltages, By all or nothing orders "more excitation" / "less excitation" sent to voltage regulation, - equalization of the frequency of the stator voltage to that of the network and phase matching of the stator voltage with the mains voltage, To comply with the constraints on the frequency and phase deviations, By all or nothing orders "faster" / "slower" sent to turbine speed control.
In the proposed fiber the light propagating in the core stimulates SPP on a metal surface and mode coupling occurs between a core mode and SPP modes at the phase matching condition.
Reportedly, Norsat has been working closely with Harris since 2013, in order to develop and deliver custom SSPAs to meet the challenging RF performance requirements for linearity, gain flatness and phase matching that is required by the Harris system.
The high number of channels supported, high data sampling frequencies, tight phase matching between channels and the ability to handle wide dynamic range inputs all make PULSE ideal for large aerospace systems.
The removal of phase matching in nonlinear optical metamaterials may lead to the generation of entangled photons for quantum networking.
Ideally this provides phase matching and the best impedance management.
Under a precise phase matching condition, the grating partially couples externally propagating waves into guided modes within the slab.
In the following we show two different approaches of calculating incoherent propagation of light in a layer, first one we assign to phase matching approach and the second one is an approach based on eliminating the phase.
These cable assemblies operate between 65[degrees] to +100[degrees]C (increased range available) with phase matching available.
Unlike conventional analog-to-digital converters which often use power hungry external control circuitry to provide interleaving and phase matching of two separate ADCs, the "smart" AT84AD001 makes use of a 3-wire (16-bit data, 3-bit address) serial interface bus, allowing on-chip functionality such as offset and gain auto calibration, and a sampling delay adjust for interleaving two analog channels.
Toro features 16 independent 16-b, 250-kHz A/D and D/A channels for simultaneous, nonmultiplexed sampling for multiple input/output control systems and applications requiring channel-to-channel phase matching.