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We propose a terahertz (THz) confocal microscope. The THz field is modulated by dithering an objective lens, and the signal is detected through a pinhole. The modulated signal is converted to an image using an analytic model based on perturbation analysis. The analytic model can successfully predict the surface profile of a test sample. This confirms that the proposed confocal microscope has a great...
Guided-wave propagation of sub-ps terahertz (THz) pulses in a highly birefringent plastic photonic crystal fiber (PPCF) was studied by using a THz time domain spectroscopy technique. The fabricated THz PPCFs exhibit an extremely large birefringence of ~ 2.1times10-2, which is almost one order of magnitude larger than that of previously reported PCFs.
Terahertz (THz) time-domain spectroscopy (TDS) provides powerful means to image biomedical structures that cannot be obtained by other imaging techniques. In this work, we report THz imaging of human cartilage by using THz TDS. In general, degeneration of cartilage is accompanied by alteration of structural, compositional and molecular level in cartilage matrix. We performed THz pulse imaging experiments...
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