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The creation and detection of atomic polarization is examined theoretically, through the study of basic optical-pumping mechanisms and absorption and fluorescence measurements, and the dependence of these processes on the size of ground-…

Atomic Physics · Physics 2013-05-29 M. Auzinsh , D. Budker , S. M. Rochester

Optical clocks require an ultra-stable laser to probe and precisely measure the frequency of the narrow-linewidth clock transition. We introduce a portable ultraviolet (UV) laser system for use in an aluminum quantum logic clock,…

We examine the effect of superluminal signal propagation through a birefringent crystal, where the effect is not due to absorption or reflection, but to the filtration of a special polarization component. We first examine the effect by a…

Quantum Physics · Physics 2015-05-13 Tore Gunnar Halvorsen , Jon Magne Leinaas

We report the observation of sum-frequency signals that depend linearly on an applied electrostatic field and that change sign with the handedness of an optically active solution. This recently predicted chiral electro-optic effect exists…

Optics · Physics 2009-11-10 P. Fischer , K. Beckwitt , A. D. Buckingham , D. S. Wiersma , F. W. Wise

Ultrafast optical pump-probe spectroscopy measurement on monolayer graphene observes significant optical nonlinearities. We show that strongly photoexcited graphene monolayers with 35 fs pulses quasi-instantaneously build up a broadband,…

Mesoscale and Nanoscale Physics · Physics 2015-06-15 Junhua Zhang , Joerg Schmalian , Tianqi Li , Jigang Wang

We examine the rotation of the plane of polarization for linearly polarized light rays by the weak gravitational field of an isolated physical system. Based on the rotation of inertial frames, we review the general integral expression for…

Astrophysics · Physics 2009-11-10 Mauro Sereno

Chirality, a pervasive phenomenon in nature, is widely studied across diverse fields including the origins of life, chemical catalysis, drug discovery, and physical optoelectronics. The investigations of natural chiral materials have been…

Mesoscale and Nanoscale Physics · Physics 2025-02-27 Xiu Zhang , Lu Zhang , Junzhi Zhu , Tingxiao Qin , Haiyun Huang , Baixu Xiang , Haiyun Liu , Qihua Xiong

We demonstrate controlled polarization rotation of an optical field conditional on the presence of a second field. Induced rotations of greater than pi/2 rad are seen with a transmission of 95%, corresponding to a ratio of phase shift to…

Atomic Physics · Physics 2010-04-29 Paul Siddons , Charles S. Adams , Ifan G. Hughes

Biomedical applications requiring tissue diagnosis, activation, and treatment could be substantially leveraged by optical methods, owing to their unique feature set. However, their widespread application is severely limited by the strong…

Optics · Physics 2019-10-23 Maxim Cherkashin , Carsten Brenner , Georg Schmitz , Martin Hofmann

Different ray paths through a turbulent plasma can produce stochastic Faraday rotation leading to depolarization of any linearly polarized component. Simple theory predicts that the average values of the Stokes parameters decay according to…

Astrophysics · Physics 2009-10-30 D. B. Melrose , J. -P. Macquart

We demonstrate that electric-dipole scatterers can mimic chiral light-matter interaction by generating far-field circular polarization upon scattering, even though the optical chirality of the incident field as well as that of the scattered…

Optics · Physics 2019-06-12 Sergey Nechayev , Peter Banzer

We demonstrate an optomechanical platform where optical mode conversion mediated by mechanical motion enables arbitrary tailoring of polarization states of propagating light fields. Optomechanical interactions are realized in a…

Optics · Physics 2019-07-17 Robert Duggan , Javier del Pino , Ewold Verhagen , Andrea Alù

Ultrafast vectorially polarized pulses have found many applications in information and energy transfer owing mainly to the presence of strong longitudinal components and their space-polarization non-separability. Due to their broad…

We show that the Faraday effect can be derived from a simple two-state model. This approach uses a quantized electromagnetic field and does not make reference to differences in refractive indices of left- and right-circularly polarized…

Quantum Physics · Physics 2024-10-04 Benjamin W. Butler

Frequency to time mapping is a powerful technique for observing ultrafast phenomena and non-repetitive events in optics. However, many optical sources operate in wavelength regions, or at power levels, that are not compatible with standard…

Optics · Physics 2019-09-04 Yiqing Xu , Stuart G. Murdoch

We investigate the interplay of diffraction and nonlinear effects during propagation of very short light pulses. Adapting the factorization approach to the problem at hand by keeping the transverse-derivative terms apart from the residual…

Optics · Physics 2016-02-17 C. L. Korpa , Gy. Toth , J. Hebling

We report the observation of large ($\sim 40%$) laser-induced above-bandgap transparency in GaAs at room temperature. The induced transparency is present only during the pulse width of the driving midinfrard laser pulses and its spectral…

Materials Science · Physics 2009-11-10 A. Srivastava , R. Srivastava , J. Wang , J. Kono

Faraday rotation in a magnetoactive medium with time dependent dielectric permittivity tensor is analyzed through both its diagonal and non-diagonal elements. Continuous and pulse incident laser field cases are considered. In a continuous…

Optics · Physics 2018-01-17 Zhyrair Gevorkian , Vladimir Gasparian , Josh Lofy

Dual image formation for a two-dimensional object via bimodal propagation through chiral-dispersive thick lens is derived. In this article, first-order frequency-dependent material dispersion of the dielectric permittivity and the lens…

Image and Video Processing · Electrical Eng. & Systems 2025-05-06 Salaheddeen Bugoffa , Hussin Ragb

The use of ultrathin solid foils offers optimal conditions for accelerating protons from laser-matter interactions. When the target is thin enough that relativistic self-induced transparency (RSIT) sets in, all of the target electrons get…

Plasma Physics · Physics 2020-10-07 Julien Ferri , Evangelos Siminos , Laurent Gremillet , Tünde Fülöp