The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The nonlinear light-matter interaction lies at the heart of controlling the electronic systems for the purpose of developing ultrafast optical switching and modulation devices [1], and attosecond laser technology [2]. In general, the interaction causes the formation of photon dressed state that is a quantum superposition state with energetically spaced sidebands and enables to generate the phase-locked...
The nonlinear interactions of GaAs quantum wells with intense single cycle terahertz (THz) pulses with amplitudes exceeding 1 MV/cm have been studied. We demonstrated for the first time that the number of carriers is enhanced 103 times more with an increase of the electric field amplitude of the THz pulse from 0.5 to 1 MV/cm, eventually which leading a bright near-infrared luminescence. This highly...
Recent development of ultrashort pulse technologies allows us to drive large amplitude motion of electron and ion coherently. The intense terahertz (THz) pulse resonant with the vibration frequency is promising to drive vibrations more directly and in coherent manner. In the case of semiconductors, one may coherently control the electronic system in the sub-level structures of quantum structures with...
The excitonic interaction in ZnSe/ZnMgSSe multiple quantum wells with intense terahertz pulses (~70 kV/cm) has been studied. Our results show a dynamical Stark effect on the excitonic absorption with a subpicosecond response time.
Intense monocycle THz pulse can drive large-amplitude vibration mode which gives us a chance to perform novel THz nonlinear spectroscopy. We experimentally demonstrated large amplitude anharmonic intermolecular vibration mode using intense monocycle THz pulse. We performed the nonlinear transmission spectroscopy of the amino acids micro-crystals at different electric field amplitude and observed the...
We propose a novel technique for the generation of high power monocycle terahertz (THz) pulse beyond excitation pulse width limitation. When intense THz electric field generated by optical rectification lies in EO crystal, optical pulse itself gets modulated by emitted THz electric field. It causes excitation pulse compression and consequently gives rise to the enhancement of generation efficiency...
We propose a novel technique for the generation of high power monocycle terahertz pulse beyond the excitation pulse width limitation. Optical pulse may get modulated by emitted intense THz electric field. This causes excitation pulse compression and consequently gives rise to the enhancement of generation efficiency and its bandwidth. We experimentally demonstrate this chi(2) cascaded processes using...
The impact of asymmetric pre-filtering for 42.7 Gbit/s CS-RZ DPSK signals were investigated experimentally and numerically, including 9000 km WDM transmission experiments. We have found that asymmetric pre-filtering is effective for quasi-linear system applications.
The third-order nonlinear optical susceptibility, χ (3) (-ω; ω, -ω, ω), of the layered perovskite-type material (C 6 H 13 NH 3 ) 2 PbI 4 is measured by a transient four-wave mixing technique using a 200-fs-pulse laser source. The maximum χ (3) value is 1.6 10 -6 esu at the lowest-exciton resonance at...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.