Infrared-frequency rectifying

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Discussion Overview

The discussion centers on the potential applications of diodes capable of rectifying alternating current (AC) at infrared frequencies, exploring both theoretical and practical implications. Participants consider various contexts, including communications and energy harvesting, while also examining the feasibility of nanoscaled thermionic diodes in this role.

Discussion Character

  • Exploratory
  • Debate/contested
  • Technical explanation

Main Points Raised

  • Some participants inquire about applications for infrared-frequency rectifying diodes beyond thermal energy harvesting, suggesting potential uses in frequency mixers for infrared communications and data multiplexing.
  • One participant questions the viability of nanoscaled thermionic diodes for rectifying infrared frequencies, noting that the design would lead to both electrodes heating due to their close proximity.
  • Another participant expresses skepticism about achieving significant breakthroughs with such diodes, suggesting that existing optical or optoelectronic methods may suffice for similar applications.
  • A participant mentions that thermionic diodes have been tested in lower microwave bands for measurement equipment but faced issues with sensitivity and transit time.

Areas of Agreement / Disagreement

Participants express differing views on the potential of infrared-frequency rectifying diodes, with some suggesting promising applications while others remain skeptical about their impact and feasibility. The discussion does not reach a consensus on the effectiveness of thermionic diodes in this context.

Contextual Notes

Participants highlight limitations related to the thermal behavior of thermionic diodes and the performance issues encountered in previous applications, particularly concerning sensitivity and transit time in lower microwave bands.

user-000
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What applications (except usage in rectifying infrared nanoantennas for harvesting thermal energy) would find a diode that could rectify AC having infrared frequency?
Could nanoscaled thermionic diodes be used for that?
 
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user-000 said:
What applications (except usage in rectifying infrared nanoantennas for harvesting thermal energy) would find a diode that could rectify AC having infrared frequency?
Frequency mixers for IR communications and data multiplexing.

user-000 said:
Could nanoscaled thermionic diodes be used for that?
No. One side of a thermionic diode is heated, and they have a space between the electrodes. The very small gap between electrodes would result in both electrodes getting hot.
 
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Baluncore said:
Frequency mixers for IR communications and data multiplexing
So, if such diode is designed, will a breakthrough or a major progress be reached in these areas?
 
user-000 said:
So, if such diode is designed, will a breakthrough or a major progress be reached in these areas?
Probably not.
There are many ways of doing the same thing with optics or optoelectronics.
 
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Thermionic diodes were tried for the lower microwave bands, mainly for measurement equipment, but were very insensitive. The main issue is transit time.
 

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