1 
quantum efficiencyIn an optical source or detector, the ratio of the number of output quanta to the number of input quanta. Note: Input and output quanta need not both be photons.

2 
quantum efficiencypercentage of input photons which contribute to a desired effect

3 
quantum efficiencyQuantum efficiency is a measure of how well a detector generates electrons in response to incoming photons. A higher value for quantum efficiency means a more sensitive detector. Since the detector se [..]

4 
quantum efficiencyThe intrinsic ability of a detector to convert photons into electrons. It is the ratio of generated electrons to incident photons expressed as a percentage.

5 
quantum efficiencyQuantum efficiency (QE) is a figure given for a photosensitive device (chargecoupled device (CCD), for example) which is the percentage of photons hitting the photo reactive surface that will produce an electronhole pair. It is an accurate measurement of the device’s sensitivity.

6 
quantum efficiency(When used with Antibodies) the amount of excitation necessary to give off the largest number of photons. Generally the higher the quantum efficiency, the better.

7 
quantum efficiencyThe ratio of holeelectron pairs or photoelectrons to the number of photons received by a photodetector. The quantum efficiency can be as high as 80% for an APD and 25% for a PMT.

8 
quantum efficiencySee QE.

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