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Sequential quantum teleportation for continuous variables is experimentally demonstrated. By using two high fidelity teleporters, an unknown coherent state is teleported twice and fidelity is F = 0.53plusmn0.2.We show the measurement results using optical homodyne tomography.
Femtosecond pulses coupled to hollow-pyramid near-field probes allow achieving sufficient peak power to perform near-field nonlinear optics. We present second-harmonic generation images of nanostructured metal surfaces with spatial resolution better than 100 nm.
The noncentrosymmetric molecular structures responsible for the second order nonlinear effects of collagen fibrils are identified by sum frequency vibrational spectroscopy. CH2 and C=O functional groups dominate the achiral and chiral spectra, respectively.
We demonstrate three-dimensional imaging by wide field optical coherence tomography with high-speed CMOS camera. A sample volume of 2.3times2.3times1.1mm3 (corresponding to 256times256times300 pixels) was imaged at 10 volumes/s by the scanning reference mirror.
We demonstrate that two- and three-dimensional geometric constructs of flexible and lightweight photosensitive fibers may be designed to obtain the amplitude and phase of an optical field on unprecedented length scales.
Ex vivo and in vivo oral cancer diagnoses are demonstrated using noninvasive third-harmonic-generation biopsy. Through its superior spatial resolution on nucleus, oral cancer cells in hamster oral cavities are successfully identified without any exogenous markers.
In frequency-domain optical coherence tomography the tissue scattering function is recovered by a simple inverse Fourier transform (IFT) of the measured power spectrum. Instead, we report that taking an IFT of the square-root of the same power spectrum improves the axial-resolution and reduces the auto-correlation noise.
Current challenges in CARS microscopy lie in pushing the sensitivity limit, together with designing turnkey set-ups based on high power, broadly tunable lasers. We have moved one step forward in each of these two directions.
Fiber-delivered laser source provides the flexibility desired for optical imaging systems. Here we demonstrate laser-scanning coherent anti-Stokes Raman scattering imaging with two picosecond laser sources delivered by large mode area photonic crystal fiber.
We realize image amplification in the continuous wave regime within an optical parametric oscillator bellow threshold. We show that its noise figure is better than that of a classical amplifier, demonstrating its quantum multimode operation.
We demonstrate a high quality optical cavity with a 30 micron mirror on a micromechanical resonator. An optical finesse of 2100 is measured via cavity ring-down. High mechanical quality of the resonator is also observed.
We present the first experimental demonstration of microwave electromagnetic trapping and manipulation of neutral particles using a full three-dimensional (3D) negative-refraction flat lens. Two most novel techniques, negative-refraction flat lens and electromagnetic tweezers, are appropriately combined in this configuration.
We report on a laser scanning volumetric image sensor having a small optical head with a gimbaled micromirror. By time-of-flight ranging, our device can measure up to 15 cm with ~200 mum resolution over a 4deg times 6deg range.
Central ingredients for a theoretical description of optical gain spectra for self-assembled quantum dots are presented. The importance of a quantum kinetic treatment of carrier-carrier Coulomb interaction and carrier-phonon interaction is discussed.
We report a method for improving the accuracy in determining blood flow rate and small vessel size by implementing a delay line filter when processing real-time spectral domain optical coherence tomography images of flow.
Spatial-Frequency-Domain Imaging (SFDI) is applied for the first time to the quality assessment of apples. The optical properties obtained are correlated to the physical and chemical properties.
Charge screening limits the output power of photoconductive sources of terahertz-frequency (far-infrared) radiation. We demonstrate a means of obtaining a significant increase in output power using a coherent array of two sources operated near saturation.
We demonstrate the use of thermoreflectance imaging for wafer-scale testing of photonic integrated circuits. The technique is used to identify damaged devices in a dysfunctional photonic circuit comprised of cascaded semiconductor optical amplifiers.
The profiles of an optical vortex with an asymmetric defect were investigated around at the focal point. Its rotation depending on only the sign of the topological charge was observed as a Berry phase effect.
We demonstrate that microbubbles generated through optical breakdown in tissue phantoms or individual cells are controllable with laser parameters. The controlled microbubbles can be used as an acoustically detectable agent for diagnostic and therapeutic applications.
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