Fig. 2: Schematic diagram of a microcavity and the experimental setup. | Light: Science & Applications

Fig. 2: Schematic diagram of a microcavity and the experimental setup.

From: Giant Kerr nonlinearity of terahertz waves mediated by stimulated phonon polaritons in a microcavity chip

Fig. 2

a Schematic diagram of a Fabry-Pérot microcavity, the cavity is sandwiched between two distributed Bragg reflectors, each Bragg reflector is made up of air slots and LN pillars arranged periodically. A beam of laser is focused into the cavity to generate THz waves. The time traces of the THz E-field in the microcavity are recorded, at point A, 60.75 μm away from THz excitation line. b Spectral information obtained by applying Fourier transformation to the electric fields in a single-mode microcavity. c Schematic of the experimental pump-probe time-resolved imaging system

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