211 citations · 984 across the 18 of their papers we have counts for
3 papers · 1 filter
Terahertz generation by beamlet superposition
Koustuban Ravi, Benjamin Ofori-Okai, Keith A. Nelson +1
We analytically show how a superposition of beamlets produces terahertz radiation with greater spatial homogeneity and efficiency compared to tilted-pulse-fronts generated by diffr…
THz generation using a reflective stair-step echelon
Benjamin K. Ofori-Okai, Prasahnt Sivarajah, W. Ronny Huang +1
We present a novel method for THz generation in lithium niobate using a reflective stair-step echelon structure. The echelon produces a discretely tilted pulse front with less angu…
What is the Brillouin Zone of an Anisotropic Photonic Crystal?
P. Sivarajah, A. A. Maznev, B. K. Ofori-Okai +1
The concept of the Brillouin zone (BZ) in relation to a photonic crystal fabricated in an optically anisotropic material is explored both experimentally and theoretically. In exper…