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Optical microsphere
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<p>Optical microspheres (photonic atoms) are one of the types of optical <a href="/facts/Optical_microcavity/0XkrTxzk">microresonators</a> (also microcavities) employed commonly in <a href="/facts/Photonics/6UHcPXbq">photonic</a> research; they provide high <a href="/facts/Quality_factor/NNjGLb5b">quality factor</a> up to 1011. These <a href="/facts/Optical_resonator/BITPG3ga">optical resonators</a> are used for active and passive photonic applications such as microlaser cavities and filters among many experiments that take advantage of very high levels of light confined on a small structure. </p>