Resonant-cavity-enhanced photo detector

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Resonant-cavity-enhanced photodetectors, also known as RCE photodetectors, are sensors designed to detect light or other forms of electromagnetic radiation. They achieve this by utilizing an <a href="/facts/Optical_cavity/BITPG3ga">optical cavity</a>—a configuration of <a href="/facts/Mirror/wMu4u6BB">mirrors</a> or other optical elements that forms a <a href="/facts/Cavity_resonator/NjC413Gn">cavity resonator</a> for <a href="/facts/Light_wave/jeofpMn4">light waves</a>, allowing for more efficient targeting of specific wavelengths.
</p><p>In RCE photodetectors, the active device structure of a photodetector is placed inside a <a href="/facts/Fabry%25E2%2580%2593P%25C3%25A9rot_interferometer/n949LwQD">Fabry–Pérot interferometer</a>. This interferometer has two parallel surfaces between which a selected wavelength of light can resonate, amplifying the <a href="/facts/Electromagnetic_field/MacraS8y">optical field</a>. While the active device structure of RCE detectors is similar to that of conventional photodetectors, the amplification effect of the optical cavity allows RCE photodetectors to be made thinner and therefore faster, while simultaneously increasing the <a href="/facts/Quantum_efficiency/MQw86Evj">quantum efficiency</a> at the resonant <a href="/facts/Wavelength/kcJU0ymz">wavelengths</a>.
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Resonant-cavity-enhanced photo detector open-in-new

Resonant-cavity-enhanced photo detector