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We have generated the backward terahertz pulses with record-high average powers of 2.3-11 muW and narrowest bandwidth of 6 GHz from multi-grating periodically-poled lithium niobate by optical rectification at room temperature.
We show that the retracing behavior based in slant-stripe-type periodically-poled RbTiOPO4 can be used to efficiently achieve second-harmonic generation within an ultra-wide spectral range of 1.7-4.0 mum.
We show a metallic graded grating structure is able to achieve the function of ldquotrapped rainbowrdquo storage of light at both THz and telecom frequencies for potential nanophotonic applications including optical communications.
In this paper, we have derived the dispersion relations for terahertz (THz) waves propagating in a direction parallel to the surface of a perfect conducting plane hosting an array of 1-D grooves having a constant depth. Since the dispersion relations for the fundamental surface mode resemble those for the surface plasmon polaritons (SPPs) at optical frequencies, such a uniform grating can be used...
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