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In this paper, we report the positive bias temperature instability (PBTI) effects of the back-gated MoS2 n-MOSFET with Al2O3 gate dielectric. Multilayer MoS2 was used and all measurements are carried in vacuum to avoid the electric signal contamination by the top MoS2 surface water or oxygen molecules absorption. In the stress phase, the Id-Vg curve shifts to the positive gate bias direction. In the...
We investigated multiple coupled optical parametric oscillators, exhibiting behaviors of strong coupling. Conversion efficiency and slope efficiency stay the same as those for conventional and two coupled optical parametric oscillators whereas linewidths are significantly reduced.
Transversely-propagating THz radiation can be up-converted to an optical wave propagating in the waveguide. Complete photon conversion and single-photon detection can be reached.
Polarization-insensitive phase conjugation, achieved based on difference-frequency generation in a second-order nonlinear composite consisting of stacked KTP plates, was exploited to restore blurred images due to phase distortion as a novel scheme.
Based on adhesive-free-bonded periodically-inverted KTP plates, we have generated a phase-conjugated beam that is insensitive to polarization of the input beam. Such a process can be used to correct a blurred image caused by turbulence.
We show that backward difference-frequency generation can be exploited to achieve phase conjugation in a second-order nonlinear medium. Our calculation shows that a reflectivity of close to 100% is achievable from a 1 mW laser.
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