Rotation of laser beam polarization in acousto-optic devices

Eklund, H.; Roos, Andreas Hult; Eng, S. T.

doi:10.1007/bf00631587

Cited by 30 publications

(10 citation statements)

References 3 publications

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“…The basic parameters for the changes are electrooptical coefficients [3,4], acoustooptical parameters [5], magnetooptical susceptibilities [6]. The use of the piezooptical operation was just done for some of the materials like nanofilms [7], glasses [8], nanocrystals [9] etc.…”

Section: Introductionmentioning

confidence: 99%

Photoinduced piezooptics effect in TeO2–Ga2O3 glasses

Ozga¹,

Fedorchuk²,

Armand³

2015

Solid State Sciences

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Section: Introductionmentioning

confidence: 99%

Photoinduced piezooptics effect in TeO2–Ga2O3 glasses

Ozga¹,

Fedorchuk²,

Armand³

2015

Solid State Sciences

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“…44,45 Furthermore, manual and acoustooptical polarization-swept fs light sources can help determine the detailed content within the subsurface of tissues. 46,47 Polarization signature of tissues, such as skin and cartilage, has added an additional contrast mechanism to intensity-based investigation and has allowed differentiation of normal and morphologically variant tissues. 9,28,48 For instance, variations of collagen fiber organization and orientation in normal cartilage were revealed and differentiated from degenerated cartilage using polarization-sensitive SHG and ratio of intensities of two orthogonally polarization-resolved SHG signals.…”

Section: Basis Of Shg Origin In Biological Mediamentioning

confidence: 99%

Imaging of biological tissues with pixel-level analysis of second-order susceptibility

Ghazaryan

Hovhannisyan

et al. 2012

J. Biomed. Opt

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Abstract. We discuss the recent advances in the development and applications of second-order susceptibility as a contrast mechanism in optical microscopy for biological tissues. We review nonlinear optical methods and approaches for differentiation of tissue structures and discrimination of normal and pathological skin tissues, which have been demonstrated for the potential use in clinical diagnosis. In addition, the potential of secondorder susceptibility imaging, encompassing applications in differentiating various types of collagen molecules for clinical diagnosis, is demonstrated. Finally, we discuss future development and application of this technique.

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“…Although tremendous progress in the exploration of enhancing the local electric field enhancement and improving the absorption, achieving strong local electric field enhancements (| E loc |/| E 0 | > 100) and near-perfect absorption (> 99%) simultaneously still remains a challenge, which will benefit a wide range of applications including plasmonic sensors, photocatalytic water splitting, SERS, and SEIRA. On the other hand, except for the polarization switching reported by Yang et al [ 1 ], most traditional polarization-selective devices, such as waveplates and polarizers based on electro-optical effects, are either static or operating with only gigahertz switching speeds, which are limited by the required electronics [ 45 , 46 ]. Thus, for the phenomena or applications of EIT effect, Fano resonance, and plasmonic nanoantennas based on a plasmonic metasurface, most of previously reported works usually suffer from these serious and urgent problems: (i) the broadening of plasmonic resonances owing to large optical losses in metals [ 5 ]; (ii) unadjustable operating wavelength of EIT effect or Fano resonances [ 35 ]; (iii) the challenge of achieving strong local electric field enhancements (| E loc |/| E 0 | > 100) and near-perfect absorption (> 99%) simultaneously [ 8 ]; (iv) generally, only gigahertz switching speeds of polarization-selective devices operating in visible or NIR region [ 1 ].…”

Section: Introductionmentioning

confidence: 99%

Optically Active Plasmonic Metasurfaces based on the Hybridization of In-Plane Coupling and Out-of-Plane Coupling

Liu

et al. 2018

Nanoscale Res Lett

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Plasmonic metasurfaces have attracted much attention in recent years owing to many promising prospects of applications such as polarization switching, local electric field enhancement (FE), near-perfect absorption, sensing, slow-light devices, and nanoantennas. However, many problems in these applications, like only gigahertz switching speeds of electro-optical switches, low-quality factor (Q) of plasmonic resonances, and relatively low figure of merit (FOM) of sensing, severely limit the further development of plasmonic metasurface. Besides, working as nanoantennas, it is also challenging to realize both local electric FE exceeding 100 and near-perfect absorption above 99%. Here, using finite element method and finite difference time domain methods respectively, we firstly report a novel optically tunable plasmonic metasurface based on the hybridization of in-plane near-field coupling and out-of-plane near-field coupling, which provides a good solution to these serious and urgent problems. A physical phenomenon of electromagnetically induced transparency is obtained by the destructive interference between two plasmon modes. At the same time, ultrasharp perfect absorption peaks with ultra-high Q-factor (221.43) is achieved around 1550 nm, which can lead to an ultra-high FOM (214.29) in sensing application. Particularly, by using indium-doped CdO, this metasurface is also firstly demonstrated to be a femtosecond optical reflective polarizer in near-infrared region, possessing an ultra-high polarization extinction ratio. Meanwhile, operating as nanoantennas, this metasurface achieves simultaneously strong local electric FE(|Eloc|/|E0| > 100) and a near-perfect absorption above 99.9% for the first time, which will benefit a wide range of applications including photocatalytic water splitting and surface-enhanced infrared absorption.

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Rotation of laser beam polarization in acousto-optic devices

Cited by 30 publications

References 3 publications

Photoinduced piezooptics effect in TeO2–Ga2O3 glasses

Photoinduced piezooptics effect in TeO2–Ga2O3 glasses

Imaging of biological tissues with pixel-level analysis of second-order susceptibility

Optically Active Plasmonic Metasurfaces based on the Hybridization of In-Plane Coupling and Out-of-Plane Coupling

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