two-photon absorption effect
Two photon absorption in semiconductor micro cavities
... single m ode fiber yields roughly 6 - 1 0 dB loss which means the power incident on the sam ple is considerably reduced. For this reason the high intensities required for the optical m easurem ent were obtained by ...
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FDTD Simulation of Three Photon Absorption and Realization of NAND Gate with GaAs Wire Waveguide
... like Two Photon Absorption [16, 17], Raman Effect [18,19], Polarization Rotation [20], Fourwave Mixing [21,22] can also be used to realize all optical logic ...
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Theory of direct and indirect effect of two-photon absorption on nonlinear optical losses in high power semiconductor lasers
... other two positions, reliable single-mode operation cannot be guaranteed and operation in the second order mode, at least for lower currents, as discussed in [31], cannot be ruled ...
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Coherent perfect absorption in deeply subwavelength films in the single-photon regime
... 50% absorption and deeply subwavelength ...coherent absorption process, which has previously been reported with continuous wave and pulsed signals at classical light levels 22,23 ...single photon ...
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Polarization dependence of a GaAs based two photon absorption microcavity photodetector
... The two eigenmodes of the cavity have been identified and shown to be separated by ...The effect of this birefringence on the field enhancement associated with the two cavity eigenmodes has been ...
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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
... Kerr effect in optical fibers, speciality fibers are required, and precise control of the wavelength of the control pulse and signal pulse around the zero-dispersion wavelength are necessary ...of ...
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Acceptance angle influence on optimum incident spot size for high finesse microcavity two photon absorption photodetectors
... cavity effect which is defined as the ratio between the TPA generated in the active layer with and without the influence of the cavity’s limited acceptance ...
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Mid-infrared two photon absorption sensitivity of commercial detectors
... The measured detector signals in the TPA regime (see Figs. 2 and 3 discussed below) demonstrate a combined effect of the linear and quadratic responses and exhibit satu- ration 13,14 at power levels well below the ...
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Chromatic dispersion monitoring for high speed WDM systems using two photon absorption in a semiconductor microcavity
... Since Gaussian pulses maintain their shape during propaga- tion through a dispersive fiber, the TPA response given by (1) can be simplified to an inverse pulsewidth relationship for a wide bandwidth cavity. From Fig. ...
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The effect of branching on the one- and two-photon absorption, cell viability and localization of cationic triarylborane chromophores with dipolar vs. octupolar charge distributions for cellular imaging
... bidden (A symmetry, f = 0.000) (Table 4). From the exciton-cou- pling model, the coupling constant V was calculated to be 0.09 eV, that is, one third of the energy difference between the TD-DFT-computed excited E and A ...
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Two Photon Absorption in Nanostructure Wide Band Gap Semiconductor CdS Using Femtosecond Laser
... the absorption and re- fractive index, were observed in nanoparticles semicon- ductor CdS material ...the effect of surface state formation in CdS nanoparti- cles on the nonlinear dynamics ...
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The role of the surfaces in the photon absorption in Ge nanoclusters embedded in silica
... larger absorption and a more efficient quantum confinement effect than Si ones, thus they are good candidate for third-generation solar ...optical absorption of Ge nanoclusters has been measured by ...
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Effect of Dose Formulation on Isoniazid Absorption in Two Young Children
... The common practice of administering isoniazid to children in the form of a crushed tablet admixed with apple sauce can evidently result in lower than expected plasma levels of the drug [r] ...
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Enhancement of hydrogen production using photoactive nanoparticles on a photochemically inert photonic macroporous support
... the photon absorbing species are within the valence and conduction bands of the support, the probability of charge transfer between the excited species and the support will be reduced ...
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Extragalactic Background Light expected from photon-photon absorption on spectra of distant Active Galactic Nuclei
... then relativistic electrons can radiate gamma-ray with en- ergies less than of primary gamma-quantum. As a result, primary spectrum of gamma-source is changed, depend- ing on spectrum of background light. So, a hard ...
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Comparison of Some Human Tissues and Some Commonly Used Thermoluminescent Dosimeters for Photon Energy Absorption
... [2] J. H. Hubbell and S. M. Seltzer, “Tables of x-ray mass attenuation coefficients and mass energy absorption coefficients 1 keV to 20 MeV for elements Z=1 to 92 and 48 additional substances of dosimetric interest” ...
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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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Optical Characterization and Surface Morphology of Sno2 Thin Films Prepared By Spin Coating Technique
... The absorbance spectrum of films with different concentration is shown in figure 1. The spectra pattern is similar for the grown films. For all the films, absorbance at UV region is very high, lowest absorbance occurred ...
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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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Enhancing the Responsivity of Uncooled Infrared Detectors Using Plasmonics for High-Performance Infrared Spectroscopy
... To investigate the effect of the radius of the hole on the absorption spectrum, the numerical simulation is performed at four different hole radius of = 1 μm, 1.5 µm, 2 µm, and 2.35 µm. The results are ...
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