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Thread: Direct infrared to microwave conversion

  1. #1 Direct infrared to microwave conversion 
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    Do you know if there exist some method directly convert non-polarized infrared light into low THz,GHz or MHz waves with high efficiency?
    I know there exist optical frequency converters,but they work usually as frequency
    multipliers and used to convert infrared to ultraviolet.


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  3. #2  
    Moderator Moderator Dishmaster's Avatar
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    Maybe you are looking for the heterodyne technique? It is widely used in radio astronomy to downsample high frequency radiation so that it can be analysed with conventional electronics.


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  4. #3  
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    Thank you for term definition.
    Unfortunately I was not able to find what is approximate efficiency of this process.
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  5. #4  
    Forum Professor Wild Cobra's Avatar
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    I have never heard of such things. I dealt with microwave communications for a significant part of my life, and can think of examples of multipliers, but I know of none for dividers. If you are looking for a controllable high power, you can get a solid state frequency modulated microwave oscillator relatively cheap today, and amplify the power with a TWT.

    What do you need to do this for?
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  6. #5  
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    I just thought about some energy conversion device which is able to convert infrared directly into GHz or THz and latest into electricity.I know that conversion efficiency of rectennas could reach 90%.Heterodyne technology seem to be existing although it's difficult to find what is efficiency of this process.In some place I found that quantum efficiency of frequency converters based on quantum wells could reach 90%.
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