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Nonlinear Optical Phenomena Induced by Intense Single-Cycle Terahertz Pulses

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2 Author(s)
Hirori, H. ; Inst. for Integrated Cell-Mater. Sci., Kyoto Univ., Kyoto, Japan ; Tanaka, K.

Recent developments in high-power table-top terahertz (THz) pulse sources enable us to coherently drive low-energy transitions into the nonlinear regime and to study fascinating nonlinear effects in various materials. This paper describes a tilted-pulse-front pumping scheme with a LiNbO3 crystal to generate intense single-cycle THz pulses. This scheme is capable of generating intense single-cycle THz pulses inducing strong spectral modulations in the excitonic and band-edge absorption of ZnSe/ZnMgSSe multiple quantum wells (MQW). Furthermore, it is shown that a 1 MV/cm electric field of a THz pulse allows us to excite electrons from the valence to conduction band of GaAs/AlGaAs MQW and observe a bright exciton luminescence.

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Selected Topics in Quantum Electronics, IEEE Journal of  (Volume:19 ,  Issue: 1 )