We present a new non-invasive air-photonic-based method of terahertz (THz) field imaging inside a parallel plate waveguide. The method is based on THz field-enhanced second harmonic generation of the fundamental laser beam in an external electric field. We also demonstrate the direct measurements of the frequency-dependent reflection coefficient at the end of the waveguide.
International Conference on Infrared, Millimeter, and Terahertz Waves, 2011
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International Conference on Infrared, Millimeter and Terahertz Waves
36th International Conference on Infrared, Millimeter and THz waves, 2011