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Transmission vs reflection modes

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Presentation on theme: "Transmission vs reflection modes"— Presentation transcript:

1 Transmission vs reflection modes
Transmission mode Reflection mode Glass Window Photon electron vacuum 1 mm vacuum Reflective layer Photocathode electron

2 Reflection Mode vs. Transmission Mode
Factor ~ 1.5 to 2 x higher Quantum Efficiency Wavelength [D.Ferenc, UC SD]

3 Hybrid photocathode Photon Photon Water Glass window Photocathode #1
1 mm GaAsP Cs-O NEA layer Al protective layer Photon electron GaAsP GaAsP Photocathode #2

4 Hybrid photocathode Photon Water Glass window Photocathode #1 1 mm
GaAsP Cs-O NEA layer Al protective layer electron GaAsP GaAsP Photocathode #2

5 GaAs emission properties

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