Detection of Higher Order Ruby Optical Maser Modes

Wittwer, N.

doi:10.1063/1.1753729

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) Secondary Electron Emitters-electron Multipliers1

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1964

1970

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Cited by 11 publications

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“…Due to transit-time reduction effects, the equivalent resistance of these diodes is very small. Some improvement can be effected by using photodiodes designed specifically for high-frequency response, such as a special coaxial diode [24], which was used to detect photomixing over the frequency range from about 1.5 to 51 GHz. Although such devices can be very useful for observing high-frequency modulation on high-intensity laser beams, their ability to detect weak signals is severely limited by their low equivalent resistance and lack of current gain.…”

Section: ) Secondary Electron Emitters-electron Multipliersmentioning

confidence: 99%

High-speed photodetectors

Anderson¹,

McMurtry²

1966

Proc. IEEE

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Abstrac t-This paper is intended as a status report on high-speed detectors for the visible and near-infrared portion of the optical spectrum. Both vacuum and solid-state detectors are discussed, with the emphasis on those devices which can be used as direct (noncoherent) detectors of weak optical signals modulated at microwave frequencies. The best detectors for this application have internal current gain and in this regard the relevant properties and limitations of high-frequency secondary emission multiplication in vacuum tube devices and avalanche multiplication in p-n junctions are summarized.

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Section: ) Secondary Electron Emitters-electron Multipliersmentioning

confidence: 99%