Filament-induced ultrafast birefringence in gases

Yuan, Shuai; Li, M; Feng, Yahui; Li, H; Zheng, Lijuan; Chin, See Leang; Zeng, Heping

doi:10.1088/0953-4075/48/9/094018

Cited by 12 publications

(5 citation statements)

References 89 publications

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“…In a such structure, the shell with a large volume dominates the absorption spectrum. [150][151][152][153][154][155][156][157][158][159] However, this method, to date, is seldom used in perovskite NCs. The main reason is that the solubility of different perovskites is similar, it is difficult to achieve the coreshell structure directly with a wet chemical process.…”

Section: Conclusion and Prospectsmentioning

confidence: 99%

A Review of Perovskite Nanocrystal Applications in Luminescent Solar Concentrators

Zhou

Wang

Bao

et al. 2023

Advanced Optical Materials

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Luminescent solar concentrators (LSCs) are capable of absorbing solar light over a large area, which subsequently converts light into luminescence at a red-shifted wavelength and then redirects it to a smaller target to increase the per-unit yield of photovoltaic devices. Among various LSC materials, perovskite nanocrystals (NCs) have attracted great attention due to their adjustable band gap, multi-exciton effect, and good stability. In this review, a brief introduction of LSCs, including their advances and principles, is given, followed by a summary of perovskite-NCs-based LSCs. The selected examples for component optimization of inorganic perovskite NCs are outlined after an introduction to the structure and properties of perovskite NCs. The absorption and/or emission peaks of all-inorganic and inorganic-organic hybrid perovskite NCs can be efficiently regulated, which not only increases the Stokes shift but also improves the stability. Excellent performance and operability show a bright application prospect of perovskite NCs in the field of LSC applications.

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Section: Conclusion and Prospectsmentioning

confidence: 99%

A Review of Perovskite Nanocrystal Applications in Luminescent Solar Concentrators

Zhou

Wang

Bao

et al. 2023

Advanced Optical Materials

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“…As evidence of the existence of birefringence effect, the generated E THz,x and E THz,y , extracted from figure 3 at z=1 and 20 mm, are shown in figures 5(a) and (b), respectively. In view of the relative temporal delay between E THz,x and E THz,y , one may firstly think of the reported THz birefringence along the filament [21][22][23]40]. Briefly, E THz,x and E THz,y travelled at different velocities in the filament zone, which finally resulted in an elliptically polarized THz radiation.…”

Section: Laser-induced Birefringence Effect Along the Plasma Filamentmentioning

confidence: 99%

“…Briefly, E THz,x and E THz,y travelled at different velocities in the filament zone, which finally resulted in an elliptically polarized THz radiation. The origin of this birefringence effect can be explained by the difference of pump-induced nonlinear contributions to n x and n y along two orthogonal polarization directions [40][41][42][43]. For instance, the refractive index modulation caused by the Kerr effect is given by Δn x−y =4 n 2 I laser /3 [43], where I laser is the pump laser intensity inside the filament.…”

Section: Laser-induced Birefringence Effect Along the Plasma Filamentmentioning

confidence: 99%

Investigating the non-radially polarized component of terahertz wave emission during single-colour femtosecond laser filamentation in air

Zhao

Gao

et al. 2018

J. Opt.

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Recently, simultaneous emission of radially and non-radially polarized terahertz (THz) pulses during single-colour femtosecond laser filamentation has been reported. In this work, the latter radiation has been specifically investigated, instead of the well-studied THz radial polarization. Briefly, cut-back measurements have verified that the ellipticity of the generated THz pulse with non-radial polarization decreased (became more linearly polarized) with the increasing filament length. The underlying mechanism responsible for this phenomenon is the existence of a propagation effect of THz wave along the filament plasma channel. In this case, the resulted off-axis propagation of THz wave inside the plasma column played a dominant role on the generated non-radial THz polarization, rather than the expected on-axis THz birefringence induced by the high laser intensity. This discovery will greatly renew the understanding of THz emission from plasma sources.

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“…assuming that the plasma has inclination neither parallel nor perpendicular to the field polarization of the laser [47,48]. Then the resulted birefringence, the nonlinear refractive indices difference, ∆n(r, t) expressed as [49][50][51] ∆n align (r, t) = ∆n || (r, t) − ∆n ⊥ (r, t)…”

Section: Theorymentioning

confidence: 99%

Control of laser-induced nonadiabatic molecular alignment in dissipative media

2018

Turk J Phys

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Laser-induced nonadiabatic alignment in nitrogen and mixtures of nitrogen with Ar gas was investigated using the ultrafast optical Kerr effect in the collinear pump-probe setup. We find that dissipative media produce desired alignment characteristics in distinct manners to decoherence and to population relaxation. The results show that the intense laser alignment can be used as a control tool of molecular dynamics in dissipative environments.

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Filament-induced ultrafast birefringence in gases

Cited by 12 publications

References 89 publications

A Review of Perovskite Nanocrystal Applications in Luminescent Solar Concentrators

A Review of Perovskite Nanocrystal Applications in Luminescent Solar Concentrators

Investigating the non-radially polarized component of terahertz wave emission during single-colour femtosecond laser filamentation in air

Control of laser-induced nonadiabatic molecular alignment in dissipative media

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