Index Catalog // ScholarsArchive@OSU

Creator:: Tomaino, J. L., Jameson, A. D., Lee, Yun-Shik, Prineas, J. P., Steiner, J. T., Kira, M., and Koch, S. W.
Abstract:: Intraexciton transitions in semiconductor quantum wells are modulated by strong and tunable few-cycle terahertz pulses. Time-resolved terahertz-pump and optical-probe measurements demonstrate that the 1s heavy-hole and light-hole exciton resonances undergo large-amplitude spectral modulations when the terahertz radiation is tuned near the 1s–2p intraexciton transition. The strong nonlinear optical transients exhibit...
Resource Type:: Article
Full Text:: , Yun-Shik Lee a,* , J. P. Prineas b , J. T. Steiner c , M. Kira c , and S. W. Koch c a

Creator:: Tomaino, J. L., Jameson, A. D., Lee, Yun-Shik, Khitrova, G., Gibbs, H. M., Klettke, A. C., Kira, M., and Koch, S.W.
Abstract:: Interactions of few-cycle terahertz pulses with the induced optical polarization in a quantum-well microcavity reveal that the lower and higher exciton-polariton modes together with the optically forbidden 2p-exciton state form a unique Lambda-type three-level system. Pronounced nonlinearities are observed via time-resolved strong-terahertz and weak-optical excitation spectroscopy and explained with a...
Resource Type:: Article
Full Text:: Lee,1,* G. Khitrova,2 H.M. Gibbs,2 A. C. Klettke,3 M. Kira,3 and S.W. Koch3 1Department of Physics

Creator:: Guay, Viela, Johnson, Nathan, Zhang, Yue, Van Der Zande, Arend M., Thorp, Spencer G., Graham, Matthew, and Lee, Yun-Shik
Abstract:: Non-equilibrium photocarriers in multilayer WSe2 injected by femtosecond laser pulses exhibit extraordinary nonlinear dynamics in the presence of intense THz fields. The THz absorption in optically excited WSe2 rises rapidly in the low THz field regime and gradually ramp up at high intensities. The strong THz pulses drive the photocarriers...
Resource Type:: Article
Full Text:: J. T. Steiner, U. Huttner, S. W. Koch, M. Kira, and R. Huber, “Lightwave valleytronics in a

Creator:: Jeong, Young-Gyun, Paul, Michael J., Kim, Seung-Hyun, Yee, Ki-Ju, Kim, Dai-Sik, and Lee, Yun-Shik
Abstract:: We demonstrate remarkably strong nonlinear terahertz (THz) effects in an intrinsic GaAs wafer patterned with a nanometer-width slot antenna array. The antenna near-field reaches 20 MV/cm due to the huge field enhancement in the plasmonic nano-structure (field enhancement factor, α ≅ 50). The THz fields are strong enough to generate high density...
Resource Type:: Article
Full Text:: . Blanchard, D. Golde, F. H. Su, L. Razzari, G. Sharma, R. Morandotti, T. Ozaki, M. Reid, M. Kira, S. W. Koch

ScholarsArchive@OSU