更多“Free space wavelength coverage by different LED materials from the visible spectrum to the infrared …”相关的问题
第1题
A distributed Bragg reflector (DBR), that is a dielectric mirror, under the confining layer (below the active region in grey) acts as a dielectric mirror, and increases the extraction ratio.
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第2题
An RCLED is an LED with an optical resonant cavity (RC) formed by two DBRs has a narrower emission spectrum.
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第3题
External quantum efficiency (EQE) hEQE of an LED represents the efficiency of conversion from electrical quanta, i.e. electrons, that flow in the LED to optical quanta, i.e.photons, that are emitted into the outside world.
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第4题
The luminous efficiency of the light-adapted (photopic) eye as a function of wavelength.
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第5题
Luminous flux is a measure of visual brightness, in lumens (lm).
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第6题
Light could be coupled from a surface emitting LED into a multimode fiber using an index matching epoxy.
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第7题
There is a Log-log relation between the emitted optical output power and the dc current.
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第8题
Current-Voltage characteristics of a few LEDS emitting at different wavelengths from the IR to blue look like that of normal diodes.
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第9题
A microlens could focus diverging light from a surface emitting LED into a multimode optical fiber.
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