Optical Nonlinearities in the Transparency Region of Bulk Semiconductors
نویسنده
چکیده
I . INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 258 11 . BACKGROUND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 259 1 . Nonlinear Absorption and Refracrion . . . . . . . . . . . . . . . . . . 259 2 . Nonlinear Polarization and the Definitions of Nonlinear Coeflcients . . . . . 261 111 . THEORY OF FWUND-ELECTRONIC NONLINEARITIES: TWO-BAND MODEL . . . . . 271 1 . Nondegenerate Nonlinear Absorption . . . . . . . . . . . . . . . . . . 271 2 . Nondegenerate Nonlinear Refraction . . . . . . . . . . . . . . . . . . 277 3 . Polarization Dependence and Anisotropy of x'3' . . . . . . . . . . . . . 283 IV . BOUND-ELECTRONIC OPTICAL NONLINEAR~ES IN ACTIVE SEMICONDUC~ORS . . . 284 V . FFSE-CARRIER NONLINEARITIES . . . . . . . . . . . . . . . . . . . . . . 287 VI . EXPERIMENTAL METHODS . . . . . . . . . . . . . . . . . . . . . . . . 293 1 . Transmittance . . . . . . . . . . . . . . . . . . . . . . . . . . . 294 2 . Beam Distortion . . . . . . . . . . . . . . . . . . . . . . . . . . . 294 3 . Excite-Probe . . . . . . . . . . . . . . . . . . . . . . . . . . . . 296 4 . Four-Wave Mixing . . . . . . . . . . . . . . . . . . . . . . . . . 291 5 . interferometry . . . . . . . . . . . . . . . . . . . . . . . . . . . 299 6.Z-Scan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300 7 . Excite-Probe 2-Scan . . . . . . . . . . . . . . . . . . . . . . . . . 302 8 . Femrosecond Continuum Probe . . . . . . . . . . . . . . . . . . . . 306 9 . interpretation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 307 VII . APPLICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 307 1 . Ultrafast All-Optical Switching Using Bound-Electronic Nonlinearities . . . . 308 2 . Optical Limiting . . . . . . . . . . . . . . . . . . . . . . . . . . . 309 Vl l i . CONCLUSION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 311
منابع مشابه
All-optical AND gate with improved extinction ratio using signal induced nonlinearities in a bulk semiconductor optical amplifier.
An all-optical AND gate based on optically induced nonlinear polarization rotation of a probe light in a bulk semiconductor optical amplifier is realized at a bit rate of 2.5Gbit/s. By operating the AND gate in an up and inverted wavelength conversion scheme, the extinction ratio is improved by 8dB compared with previously published work.
متن کاملMicrowave–Assisted Hydrothermal Synthesis and Optical Characterization of SnO2 Nanoparticles
Semiconductor nanoparticles exhibit size dependent properties due to quantum confinement effect that are not present in their bulk counterparts. In this work, extremely fine and pure SnO2 nanoparticles of ~1.1 nm size were synthesized by a solution process, in which amorphous precipitate of SnO2 was crystallized by microwave heating. The particles sizes varied from ~1.1 to ~2.7 nm. By XRD analy...
متن کاملNonlinear Modeling and Investigating the Nonlinear Effects on Frequency Response of Silicon Bulk-mode Ring Resonator
This paper presents a nonlinear analytical model for micromechanical silicon ring resonators with bulk-mode vibrations. A distributed element model has been developed to describe the dynamic behavior of the micromechanical ring resonator. This model shows the nonlinear effects in a silicon ring resonator focusing on the effect of large amplitudes around the resonance frequency, material and ele...
متن کاملNonlinear Optical Properties of Rigid Polyurethane Foam/SiO2 Nanocomposite
Polyurethane closed cell (PUCC)/SiO2 nanocomposites have been prepared by using in situ polymerization approach. The third-order optical nonlinearities of PUCC/SiO2 nanocomposites, dissolved in DMF are characterized by Z-scan technique at the measurement wavelength of 532 nm. The nonlinear refractive (NLR) indices and nonlinear absorption (NLA) coefficients of samples were calculated from close...
متن کاملZSM-5 Zeolite As Host Material for Semiconductor Nanoparticles
This work describes the optical and structure properties of nickel sulfide and cobalt sulfide nanoparticles in ZSM-5 zeolite. The samples were obtained by sulfidation of the Ni2+ and Co2+ ion-exchange ZSM-5 zeolites in a Na2S solution at room temperature. The optical properties of the samples were studied by UV-visible spectroscopy. Their crystalline structure and morphology were studied by X-r...
متن کامل