نتایج جستجو برای: single photon

تعداد نتایج: 916950  

Journal: :The Journal of chemical physics 2011
Kasper Kristensen Joanna Kauczor Andreas J Thorvaldsen Poul Jørgensen Thomas Kjærgaard Antonio Rizzo

Damped response theory is applied to the calculation of two-photon absorption (TPA) spectra, which are determined directly, at each frequency, from a modified damped cubic response function. The TPA spectrum may therefore be evaluated for selected frequency ranges, making the damped TPA approach attractive for calculations on large molecules with a high density of states, where the calculation ...

1998
Hong-Yi Zhou

The experimental results of the two-photon absorption(TPA) and Mössbauerrotor(MR) for testing the isotropy of the speed of light are explained in an ether drift model with a drift velocity of ∼ 10c. Further tests of the ether drift assumption are suggested.

Journal: :Optica 2021

An atomic system that can be addressed via a single optical mode, hereafter called one-dimensional atom, is central for many applications in quantum technologies. A cavity with large Purcell factor required to collect the emission efficiently, but small long-time memory storage. Here, we introduce an effective and versatile atom consisting of two interacting emitters efficiently coupled mode fa...

Journal: :Chemical communications 2012
Xiqi Zhang Zhenguo Chi Bingjia Xu Long Jiang Xie Zhou Yi Zhang Siwei Liu Jiarui Xu

A series of remarkable multifunctional 9,10-distyrylanthracene derivatives (DSA(n), n = 7-12) was synthesized. All derivatives possess typical aggregation-induced emission (AIE) property. Some of the derivatives exhibit multifunctional properties, including AIE, mechanofluorochromism, vapochromism, thermochromism, and mesomorphism, which are rarely found to exist simultaneously in a single comp...

2001

The Fuel Quality Standards Act 2000, which received Royal Assent on 21 December 2000, provides the framework for a national fuel quality standards regime. This legislation has been developed in response to an urgent need to address the quality of fuel currently available in Australia. New vehicle emission standards, harmonising Australian standards with international vehicle emission standards,...

Journal: :Journal of the American Chemical Society 2001
W H Lee H Lee J A Kim J H Choi M Cho S J Jeon B R Cho

Two-photon absorption (TPA) cross sections of four representative series of octupolar molecules are theoretically investigated. The general structure--TPA-property relationship is described by using the effective four-state valence-bond three-charge-transfer model. As the charge-transfer character of the ground electronic state increases due to the strong donors or acceptors, (i) the transition...

Journal: :Optics letters 2011
P Béjot J Kasparian

We numerically investigate the conical emission (CE) from ultrashort laser filaments, both considering and disregarding the higher-order Kerr effect (HOKE). While the consideration of HOKE has almost no influence on the predicted CE from collimated beams, differences arise for tightly focused beams. This difference is attributed to the different relative contributions of the nonlinear focus and...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2006
Wang-Kong Tse P T Leung

Based on the model proposed by Hilgenfeldt [Nature (London) 398, 401 (1999)], we present here a comprehensive theory of thermal radiation in single-bubble sonoluminescence (SBSL). We first invoke the generalized Kirchhoff's law to obtain the thermal emissivity from the absorption cross section of a multilayered sphere (MLS). A sonoluminescing bubble, whose internal structure is determined from ...

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