Two Photon Absorption
Chromatic dispersion monitoring for high speed WDM systems using two photon absorption in a semiconductor microcavity
... a two-photon absorption (TPA) photode- tector for use in chromatic dispersion (CD) monitoring in high- speed, WDM ...of two wavelength chan- nels separated by ...
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Towards Heralded Two-Photon Absorption and Two-Photon Excited Fluorescence for Quantum Microscopy and Spectroscopy
... fluorescence photon is emitted subsequently to the absorption process (see ...derived two-photon absorption theoretically in her thesis in 1931 using quantum theory and the Dirac ...
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Mid-infrared two photon absorption sensitivity of commercial detectors
... broad-band two-photon absorption (TPA) in several commercially available MIR inter-band bulk semiconductor photodetectors with the spectral cutoff in the range of ...a two-photon ...
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All optical sampling based on two photon absorption in a semiconductor microcavity for high speed OTDM
... Standard semiconductor photodetectors generate a current when incident photons, with energy greater than the band gap of the active region of the photodetector, are absorbed, causing the excitation of an electron from ...
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Generation of Nonclassical Light by Unsaturated Two Photon Absorption
... to two-photon absorption (TPA) and the fac- tors that contribute to squeezing and antibunching of photons, leading to the generation of nonclassical ...absorbing two photons si- ...initial ...
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Acceptance angle influence on optimum incident spot size for high finesse microcavity two photon absorption photodetectors
... Abstract—The influence of the limited acceptance angle of a high-finesse microcavity two-photon absorption photodetector on its response has been investigated. It is shown that the limited acceptance ...
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Theory of direct and indirect effect of two-photon absorption on nonlinear optical losses in high power semiconductor lasers
... carrier absorption by the homogeneously distributed carrier population accumulated in the OCL due to the nonzero time of their capture from the OCL to the active layer and the nonzero rate of their thermal escape ...
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Competition between sub-bandgap linear detection and degenerate two-photon absorption in gallium arsenide photodiodes
... achieved two I-P characteristics of the diode while measuring the temperature by a PT100 thermo-resistor glued to the photodiode (see ...by two-photon absorption only occurs when the pulse is ...
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Optical signal processing via two photon absorption in a semiconductor microcavity for the next generation of high speed optical communications network
... of two-photon absorption (TPA) in a semiconductor for high-speed signal processing applications such as switching [7], sampling [8], autocorrelation [9], and optical thresholding ...
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Two Photon Absorption in Nanostructure Wide Band Gap Semiconductor CdS Using Femtosecond Laser
... UV-VIS absorption and transmission spectra of the sample were recorded by a Hitachi U-4100 spectrometer covering 200 - 1100 ...nonlinear absorption study at the near resonant re- gime was carried out using ...
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Two photon absorption in semiconductor micro cavities
... uniformity is a characteristic of epitaxial growth and occurs because of slight variations in the flux of materials in the growth chamber. The uniformity is a function of each chamber and with calibration processes a ...
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Measurements of Absolute Atomic Nitrogen Density by Two Photon Absorption Laser Induced Fluorescence Spectroscopy in Hot Air Plasma Generated by Microwave Resonant Cavity
... in photon counting mode requiring a second diaphragm placed in front of the lens in order to reduce the fluorescence ...Time-resolved photon counting is performed by a multichannel scaler Stanford Research ...
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Polarization dependence of a GaAs based two photon absorption microcavity photodetector
... where ζ is the Jones matrix describing the polarization state with reference to the principal crystallographic axes of GaAs. In order to calculate the TPA photocurrent, the electric field inside the cavity has to be ...
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Two photon absorption based detection in semiconductor microcavities
... polarisation controller. The PA consists o f an input polarizer and a half- and quarter-wave plate. This PA polarizes the noise and also ensures that it the B L ASE is incident on the detectors w ith the same ...
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Electronic Thesis and Dissertation Repository 8-16-2013 12:00 AM The Study of Nanophotonic Switching Mechanisms in Photonic and Metallic Heterostructures
... nonlinear two-photon absorption and power absorption in a quantum dot- graphene nano ake nanocomposite system have been investigated ...observe two- photon processes in the ...
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Ultralow-threshold up-converted lasing in oligofluorenes with tailored strong nonlinear absorption
... a two- photon absorption cross-section as high as 2200 GM, which is comparable to that of linear conjugated ...show two-photon absorption pumped amplified spontaneous emission ...
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FDTD Simulation of Three Photon Absorption and Realization of NAND Gate with GaAs Wire Waveguide
... three photon absorption (3PA) co-efficient at mid-infrared wavelength like ...cross- absorption in a waveguide is investigated using FDTD simulation, where the dominant process is nonlinear ...
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One and two photon pumped organic semiconductor lasers
... the two-photon absorption properties of polyfluorene is determining the strength of the nonlinear absorption of a high intensity ...maximum two- photon absorption will be ...
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Photoactivatable metal complexes : from theory to applications in biotechnology and medicine
... complexes. Two-photon absorption offers the possibility of activating platinum complexes that absorb at shorter wavelengths ...by two-photon absorption, but interestingly, the ...
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Coherent perfect absorption in deeply subwavelength films in the single-photon regime
... heralded photon via a second SPAD detector. The two detection arms (g and d), which are of different optical path length, are coupled into a single multimode fibre by means of a beam splitter (not shown in ...
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