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What is a broadband field?

  1. Oct 4, 2014 #1
    Is broadband field, a wave that contains a range of wavelengths? I can not find a good definition for it
     
  2. jcsd
  3. Oct 4, 2014 #2

    Baluncore

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    In what context is the term “broadband field” used?
    Broadband is a wide bandwidth or wide variation in frequency. Field might mean electromagnetic field.
     
  4. Oct 4, 2014 #3
    In a far field imaging system
     
  5. Oct 4, 2014 #4

    Baluncore

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    Broadband 3D imaging can be done with EM radiation from VLF to X-ray, or with acoustic signals from subsonic seismic imaging through to ultrasonic examination of materials.

    “Broadband field” may refer to the 3D volume that is being imaged using a broadband signal.

    As the bandwidth of the radiation increases, so does the volume of the imaged 3D field.
    http://en.wikipedia.org/wiki/White_...n_between_spectral_width_and_coherence_length

    Can you provide text or a link to an example of the use of "broadband field".
     
  6. Oct 7, 2014 #5
    http://journals.aps.org/prb/abstract/10.1103/PhysRevB.89.115403
    Please read the abstract, A finite-sized ultrathin metallic slab is used to encode subwavelength details of the broadband field radiated by an object.


     
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