Time-resolved observation of coherent excitonic nonlinear response with a table-top narrowband THz pulse wave

Abstract

By combining a tilted-pulse-intensity-front scheme using a LiNbO3 crystal and a chirped-pulse-beating method, we generated a narrowband intense terahertz (THz) pulse, which had a maximum electric field of more than 10 kV/cm at around 2 THz, a bandwidth of about 50 GHz,and frequency tunability from 0.5 to 2 THz. By performing THz-pump and near-infrared-probe experiments on GaAs quantum wells, we observed that the resonant excitation of the intraexcitonic 1s-2p transition induces a clear and large Autler-Townes splitting. Our time-resolved measurements show that the splitting energy observed in the rising edge region of electric field is larger than in the constant region. This result implies that the splitting energy depends on the time-averaged THz field over the excitonic dephasing time rather than that at the instant of the exciton creation by a probe pulse.

References in corpus (4)

• Coherent Control of Rydberg States in Silicon
• Transient terahertz spectroscopy of excitons and unbound carriers in quasi two-dimensional electron-hole gases
• Electric-Field Ionization of Gallium Acceptors in Germanium Induced by Single-cycle Terahertz Pulses
• Systematic investigation of THz-induced excitonic Rabi splitting

Cited by in corpus (6)

• Acceleration of relativistic beams using laser-generated terahertz pulses
• Floquet engineering of strongly-driven excitons in monolayer tungsten disulfide
• Sub-Cycle Optical Response Caused by Dressed State with Phase-Locked Wavefunctions
• Floquet theory of photoinduced topological phase transitions in the organic salt $\alpha$-(BEDT-TTF)${}_2$I${}_3$ irradiated with elliptically polarized light
• Coherent generation and control of tunable narrowband THz radiation from laser-induced air-plasma filament
• Predicted photoinduced pair annihilation of emergent magnetic charges in the organic salt $\alpha$-(BEDT-TTF)${}_2$I${}_3$ irradiated by linearly polarized light