211 citations · 984 across the 18 of their papers we have counts for
3 papers · 1 filter
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…
Transient terahertz photoconductivity measurements of minority-carrier lifetime in tin sulfide thin films: Advanced metrology for an early-stage photovoltaic material
R. Jaramillo, Meng-Ju Sher, Benjamin K. Ofori-Okai +7
Materials research with a focus on enhancing the minority-carrier lifetime of the light-absorbing semiconductor is key to advancing solar energy technology for both early-stage and…