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Transient fully reconfigurable photonic circuits can be introduced at the optical fiber surface with subangstrom precision. A building block of these circuits — a 0.7Å-precise nano-bottle resonator — is experimentally created by local heating, translated, and annihilated.
We demonstrate the direct generation of broadband wavelength-multiplexed polarization entangled photons from a single monolithic chip. The obtained concurrence of 0.98±0.01, and bandwidth of 95 nm are the highest values reported in any waveguide source, setting new limits for monolithic quantum technologies.
We present the first real-time transmission experiment over a 60-km-long fiber supporting six coupled spatial and polarization modes, enabled by a custom receiver board and an FPGA-implementation of an unconstrained adaptive frequency-domain MIMO equalizer.
This study describes a framework for characterizing resolution and sensitivity in optical coherence micro-elastography, and presents a means of optimizing these parameters through spatial filtering. Results show improved axial resolution with no loss in sensitivity.
We demonstrate the first all-electronically time division multiplexed (ETDM) transponder with a line rate exceeding 1 Tb/s (90-GBd PDM-64-QAM), using a novel 3-bit multiplexing DAC IC.
We demonstrate efficient photonic devices that rely on sub-100nm features in unmodified 45nm SOI CMOS, including photonic crystals, array-antenna grating couplers, and modulators. We then show monolithically integrated electronic-photonic systems comprising millions of transistors and thousands of photonic devices, including a complete chip-to-chip photonic link.
We demonstrate quantitative-phase asymmetric-detection time-stretch optical microscopy (Q-ATOM) for ultra-high-throughput label-free image-based single-cell classification and phenotyping at an ultrafast imaging line-scan rate of 11.6 MHz (∼120,000 cells/sec).
The potential of the device is demonstrated through the results of a micro-bead counting experiment. A 0.5 µl sample volume containing 10 µm polystyrene micro-beads in Dl water is deposited into an on-chip inlet reservoir from where it flows, under capillary action, through a buried flow cell. A laser on one side of the cell is forward biased and the opposing laser is operated as a photodiode (Fig...
We demonstrate high-throughput single-microorganism (phytoplankton) analysis based on ultrafast imaging flow cytometry enabled by optical time-stretch at a throughput orders-of-magnitude faster than the existing techniques employed for marine or biofuel research.
We demonstrate polarization sensitive OCT using miniaturized needle probes. Employing the Mueller-formalism, we reconstruct tissue birefringence and retrieve the depolarization index of ex vivo tissue samples, providing contrast complementary to the structural intensity signal.
We applied time-resolved angled Fluorescence Laminar Optical Tomography (aFLOT) imaging system to record 3D neural activities evoked in the whisker-barrel system of mice in vivo, in response to single whisker deflection.
Immunoassay based on laser-induced photoacoustic (PA) effect is demonstrated for the detection of disease biomarkers with a significantly enhanced sensitivity. The PA immunoassay employs metal nanoparticles as photoacoustically detectable labels. Compared to the colorimetric method, the PA approach offers sensitivity improvements over 60-fold and 100-fold for the microtiter plate-based immunoassay...
We have developed multi-parametric PAM for simultaneous quantification of vascular anatomy, sO2, and blood flow at the microscopic level in vivo. This innovation opens a new avenue in the mechanistic study of vascular remodeling in cancer and ischemia.
We will discuss the recent progresses of the Fourier ptychographic imaging approach. We will demonstrate its applications in gigapixel microscopy, quantitative phase imaging, spectrum multiplexing, 3D holographic imaging, structured illumination microscopy, super-resolution fluorescence microscopy, and photographic imaging.
The paper presents the physics, materials, and devices for high-efficiency III-Nitride light-emitting diodes (LEDs) applicable for illumination and smart lighting. The fundamental concepts and breakthroughs for addressing the limitations in III-Nitride LEDs will be presented, and the future directions in laser based solid state lighting and smart lighting will also be reviewed.
Accurate self-orientation within a space can be achieved using only a simple photodetector and a remote Gallium Nitride micro-light-emitting diode array, emitting a time series of varying spatial illumination patterns onto the scene.
Tandem LEDs in which active regions are connected by tunnel junctions show extraordinary efficiency improvement when compared with traditional LEDs and this is explained by relatively reduced forward voltage and more uniform carrier distribution.
Microlens array and cruciform black matrices were adopted to reduce ambient light reflection by 87.8% in OLED display for a 21mm by 21mm eyebox while only 19.8% of reflective layer's area was occupied.
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