نتایج جستجو برای: light interference
تعداد نتایج: 488463 فیلتر نتایج به سال:
Results of an investigation into the performance a wide field view silicon photomultiplier (SiPM) receiver under ambient light are reported. During these investigations new form inter-symbol interference (ISI) was discovered, which can be attributed to saturation SiPM. This ISI means that using decision feedback equalization (DFE) improves receiver's at low data rates.
Coherence is a key concept in optics derived from the statistical nature of real light beams [1–3]. Coherence is usually understood as the principal requisite for good quality interference fringes. In this work we show from a quantum metrological perspective that this is not always the case, so that optimum interference and second-order coherence may become antithetical. More specifically, we f...
A linear optical quantum computer relies on interference between photonic qubits for logic, and entanglement for near-deterministic operation. Here we measure the interference and entanglement properties of photons emitted by a quantum dot embedded within a light-emitting diode. We show that pairs of simultaneously generated photons are entangled, and indistinguishable from subsequently generat...
Dirac’s somewhat unfortunate statement about ‘interference between two (or more) photons never occurring‘ has led to fruitful discussions clarifying the understanding of interference from a quantum mechanical point of view. These days textbook presentations elucidate that single photon light fields behave just like classical states of light [1] when used in a Young’s double-slit interference ex...
Fluorescence microscopy with an improved contrast for fluorescence images is developed using an optical interference mirror (OIM) slide, which can enhance the fluorescence from a fluorophore as a result of the double interference of the excitation light and emission light. To improve the contrast of a fluorescence image using an OIM slide, a linearly-polarized excitation light was employed, and...
To overcome light interference, including a large DC offset and ambient light variation, a robust photoplethysmogram (PPG) readout chip is fabricated using a 0.13-μm complementary metal-oxide-semiconductor (CMOS) process. Against the large DC offset, a saturation detection and current feedback circuit is proposed to compensate for an offset current of up to 30 μA. For robustness against optical...
When light is incident on 2D transition metal dichalcogenides (TMDCs), it engages in multiple reflections within underlying substrates, producing interferences that lead to enhancement or attenuation of the incoming and outgoing strength of light. Here, we report a simple method to engineer the light outcoupling in semiconducting TMDCs by modulating their dielectric surroundings. We show that b...
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