Quantum-mechanical molecular-dynamics simulations are carried out to explore possible precursor states of nano-polycrystalline diamond, a novel ultra-hard material produced directly from graphite. Large-scale simulati...
Quantum-mechanical molecular-dynamics simulations are carried out to explore possible precursor states of nano-polycrystalline diamond, a novel ultra-hard material produced directly from graphite. Large-scale simulation with 105 atoms is realized by using the 'order-N' simulation code 'ELSES' (http://***). The simulation starts with a diamond structure that contains initial structural defects and results in a mixture of graphite(sp2)-like and diamond(sp3)-like regions as nano-meter-scale domains. We speculate that the domains are metastable and are possible candidates of the precursor structures.
We fabricated a new liquid-crystal spatial light modulator for amplitude modulation of 315-1100 nm spectrum. applied voltage and pulse width dependent transmission was characterized, which paves the way for monocycle-...
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We fabricated a new liquid-crystal spatial light modulator for amplitude modulation of 315-1100 nm spectrum. applied voltage and pulse width dependent transmission was characterized, which paves the way for monocycle-pulse shaping and attosecond pulse measurement.
Detailed angle resolved spectroscopy reveals that intense multiple Raman-Nath like CARS signals (350-720 nm) are generated in diamond under pumping of two-phonon Raman peak by two-color femtosecond pulses.
Detailed angle resolved spectroscopy reveals that intense multiple Raman-Nath like CARS signals (350-720 nm) are generated in diamond under pumping of two-phonon Raman peak by two-color femtosecond pulses.
We demonstrate Fourier synthesis of RN-like multiple coherent anti-Stokes Raman-scattering signals in a KTaO 3 single crystal at room temperature. Isolated pulses with 13-fs duration and 520-690-nm wavelength range a...
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We demonstrate Fourier synthesis of RN-like multiple coherent anti-Stokes Raman-scattering signals in a KTaO 3 single crystal at room temperature. Isolated pulses with 13-fs duration and 520-690-nm wavelength range are generated without any active chirp compensator.
We demonstrated experimentally the generation of 65-muJ, 5.8-fs optical pulses with an ultrabroad bandwidth (540 - 1000 nm) by the use of a double-pass angularly-dispersed noncollinear optical parametric amplifier.
ISBN:
(纸本)9781424438303
We demonstrated experimentally the generation of 65-muJ, 5.8-fs optical pulses with an ultrabroad bandwidth (540 - 1000 nm) by the use of a double-pass angularly-dispersed noncollinear optical parametric amplifier.
We report pronounced light-induced change of the optical activity at terahertz frequency in metal chiral gratings on semiconductor substrates. This result opens new horizons in the active terahertz polarization control.
We report pronounced light-induced change of the optical activity at terahertz frequency in metal chiral gratings on semiconductor substrates. This result opens new horizons in the active terahertz polarization control.
We observed stress dependence of the energy of np excitons in Cu 2 O by linear absorption spectroscopy. The energy shift of np states agrees well with calculations using modified coefficients under symmetry considerat...
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We observed stress dependence of the energy of np excitons in Cu 2 O by linear absorption spectroscopy. The energy shift of np states agrees well with calculations using modified coefficients under symmetry considerations.
We demonstrated large optical activity in the zeroth-order transmission with metal and dielectric planar chiral nanogratings enhanced by surface-plasmon or waveguide resonances; and observed circularly-polarized emiss...
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ISBN:
(纸本)9781424438303
We demonstrated large optical activity in the zeroth-order transmission with metal and dielectric planar chiral nanogratings enhanced by surface-plasmon or waveguide resonances; and observed circularly-polarized emission from the semiconductor chiral nanogratings with quantum dots.
Optical parametric amplification pumped by the third harmonics of a Ti:sapphire laser pulse was numerically analyzed. The influence of pump depression due to two photon absorption was estimated with the pump focusing ...
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ISBN:
(纸本)9781424438303
Optical parametric amplification pumped by the third harmonics of a Ti:sapphire laser pulse was numerically analyzed. The influence of pump depression due to two photon absorption was estimated with the pump focusing effect.
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