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We report large optical amplification in a pure silicon waveguide via stimulated Brillouin Scattering. The device supports >5 dB amplification at high pump powers and a record low (5 mW) threshold for net amplification.
We present the first time-domain measurement of a guided-wave nano-opto-mechanical system, resulting in the coherent excitation of multiple mechanical modes. We deconvolved the electronic and mechanical responses to observe the evolution of the coherent superposition.
The nonlinear of a nanoscale Brillouin-active silicon waveguide is examined through heterodyne four-wave mixing experiments. The interference between Brillouin scattering, Kerr, and dispersive free-carrier nonlinearities are analytically described to explain the characteristic line-shapes observed.
We present a protocol that combines quantum and classical resources to increase the sensitivity of a phase measurement. The superresolution is achieved through the use of N00N states and multiple passes through a prism pair.
We demonstrate experimentally a new procedure for obtaining spatial super-resolution in quantum imaging by measuring optical centroid. Our results show spatial resolution enhancement identical to that of quantum lithography but with higher detection efficiency.
It was reported earlier that it is possible to obtain large pulse advancement with minimum pulse distortion in fast-light propagation through an erbium-doped fiber amplifier by placing the pulse on top of a mutually coherent constant background field. Here we show that comparable distortion reduction can be obtained through use of a mutually incoherent background field, a procedure that could be much...
A novel method (pulse-on-background) to reduce pulse distortion in fast light pulse propagation through an erbium-doped fiber amplifier by adding a background of appropriate power is suggested. The pulse-on-background method depends on pulse width, pump power, pulse power and background-to-pulse power ratio.
The nonlinear properties of Bi3.25La0.75Ti3O12 thin film grown on quartz substrate is measured using the Z-scan technique with ps-laser pulses at 532-nm wavelength. The nonlinear refractive index and absorption coefficients are 0.31times10 cm2/W and 3times10-5 cm/W, respectively, indicating Bi3.25La0.75Ti3O12 film on quartz is a good candidate for applications in nonlinear optical devices.
A single-photon source based on single CdSe quantum-dot fluorescence in a chiral-photonic-bandgap liquid-crystal host manifests itself in observed fluorescence antibunching. Chiral-photonic bandgap structures will provide deterministically handed, circular-polarized fluorescence, even for emitters without a dipole moment.
Pulse broadening or compression in an Er3+-doped fiber amplifier is observed, and explained by gain recovery and pulse spectrum broadening effects. Maximal pulse advancement and minimal pulse distortion are obtained by optimizing these competing effects.
A single-photon source based on single CdSe quantum-dot fluorescence in a chiral-photonic- bandgap liquid-crystal host manifests itself in observed fluorescence antibunching. Chiral-photonic- bandgap structures will provide deterministically handed, circular-polarized fluorescence, even for emitters without a dipole moment.
We report resolution improvements exceeding the standard Rayleigh limit using an interferometric, nonlinear optical method. Using PMMA as an N-photon lithographic material, we record fringes with a period of a quarter of the wavelength.
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