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We have observed coherent cyclotron resonance oscillations from a two-dimensional electron gas by combining a rapid scanning terahertz time-domain spectrometer with a table-top mini-coil pulsed magnet.
We report ultra-fast voltage-tunable optical response from metamaterials based coupling of plasmonic resonances in metallic nanostructures with intersubband polaritons. Over 310nm of spectral peak tuning around 7µm with 10ns response time was experimentally demonstrated.
Terahertz time-domain spectroscopy and temperature dependent femtosecond optical pump-probe spectroscopy are used to track quasiparticle dynamics at the interface between superconducting and ferromagnetic oxide layers.
Temperature-dependent femtosecond optical spectroscopy is used to track polaron dynamics in the spin and charge frustrated system LuFe2O4, revealing the influence of charge and spin ordering on polaron excitation, redressing, and coupling to on-site excitations.
Visible pump-probe spectroscopy isolates the femtosecond Drude response of a photogenerated electron-hole plasma in monolayer graphene. The observed Vn scaling versus carrier density reveals the relativistic nature of the electron-hole plasma.
We demonstrated a compact zone plate lens on the end facet of hard polymer clad fiber (HPCF). Femto-second laser inscription technique was developed and the focusing properties of the lens were investigated.
We demonstrate a scalable approach for the generation of high average power fs pulse trains by optically injection locking an amplification cavity. Initial results generated 4.7 Watts average power and 70 fs pulses.
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