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Spatial distribution of simulated for two cavity modes realized in a GaAs/AlAs coupled multilayer cavity. The upper panel shows the refractive index profile.
Simulated temporal profiles of the DFG signals from coupled cavity structures with and without inversion. The excitation source was assumed to be a 100 fs Gaussian pulse.
(a),(b) Layer structures of two (113)B epiwafers used for the wafer bonding. (c) Bonding configuration. The substrate of epiwafer #A was completely removed after bonding. Measured optical reflection spectra are shown for each structure in the right-hand panel.
(a) Measured temporal waveforms of terahertz signals from GaAs/AlAs coupled cavity structures with and without inversion. (b) Power spectra obtained by fast Fourier transforms of (a).
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