Optics Express (OPT EXPRESS )

Publisher: Optical Society of America, Optical Society of America

Description

Optics Express is the world's first international all-electronic journal of optics. Published bi-weekly, Optics Express offers OSA quality, rapid publication of original, peer-reviewed articles in all fields of optical science and technology. Color graphics and audio or video features are included at no extra cost to the authors. This journal is freely and widely available to readers via the Internet.

  • Impact factor
    3.55
    Show impact factor history
     
    Impact factor
  • 5-year impact
    3.58
  • Cited half-life
    3.80
  • Immediacy index
    0.80
  • Eigenfactor
    0.25
  • Article influence
    1.13
  • Website
    Optics Express website
  • Other titles
    Optics express
  • ISSN
    1094-4087
  • OCLC
    37160672
  • Material type
    Document, Periodical, Internet resource
  • Document type
    Internet Resource, Computer File, Journal / Magazine / Newspaper

Publisher details

Optical Society of America

  • Pre-print
    • Author can archive a pre-print version
  • Post-print
    • Author can archive a post-print version
  • Conditions
    • On a non-profit server
    • Publisher version may be used
    • Publisher copyright and source must be acknowledged with set statement (see policy)
  • Classification
    ​ green

Publications in this journal

  • He Chen, Sheng-Ping Chen, Zong-Fu Jiang, Jing Hou
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    ABSTRACT: We demonstrate nanosecond scale rectangular wave-breaking-free pulse generation in an actively mode locked Yb-doped fiber laser based on a combined action of active periodic cavity loss modulation and nonlinear polarization rotation effect. The pulse width of the laser can be controlled in the range of 890 ps to above 124 ns instantaneously by adjusting the electrical signal applied on the modulator. As high as 19.8 nJ wave-breaking-free pulse is achieved with maximum available pump power. The output pulse temporal dynamics exhibit various distinct characteristics under different modulation and polarization control. The laser presents unusually flexible tunabilities in pulse width, pulse energy and pulse shape.
    Optics Express 11/2014; 22(22).
  • Alexander Guggenmos, Stefan Radünz, Roman Rauhut, Michael Hofstetter, Sriram Venkatesan, Angela Wochnik, Eric M. Gullikson, Stefan Fischer, Bert Nickel, Christina Scheu, Ulf Kleineberg
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    ABSTRACT: Recent advances in the development of attosecond soft X-ray sources ranging into the water window spectral range, between the 1s states of carbon and oxygen (284 eV–543 eV), are also driving the development of suited broadband multilayer optics for steering and shaping attosecond pulses. The relatively low intensity of current High Harmonic Generation (HHG) soft X-ray sources calls for an efficient use of photons, thus the development of low-loss multilayer optics is of uttermost importance. Here, we report about the realization of broadband Cr/Sc attosecond multilayer mirrors with nearly atomically smooth interfaces by an optimized ion beam deposition and assisted interface polishing process. This yields to our knowledge highest multilayer mirror reflectivity at 300 eV near normal incidence. The results are verified by transmission electron microscopy (TEM) and soft/hard X-ray reflectometry.
    Optics Express 11/2014; 22(22).
  • Kyle Fuerschbach, Jannick P. Rolland, Kevin P. Thompson
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    ABSTRACT: This paper utilizes the framework of nodal aberration theory to describe the aberration field behavior that emerges in optical systems with freeform optical surfaces, particularly φ-polynomial surfaces, including Zernike polynomial surfaces, that lie anywhere in the optical system. If the freeform surface is located at the stop or pupil, the net aberration contribution of the freeform surface is field constant. As the freeform optical surface is displaced longitudinally away from the stop or pupil of the optical system, the net aberration contribution becomes field dependent. It is demonstrated that there are no new aberration types when describing the aberration fields that arise with the introduction of freeform optical surfaces. Significantly it is shown that the aberration fields that emerge with the inclusion of freeform surfaces in an optical system are exactly those that have been described by nodal aberration theory for tilted and decentered optical systems. The key contribution here lies in establishing the field dependence and nodal behavior of each freeform term that is essential knowledge for effective application to optical system design. With this development, the nodes that are distributed throughout the field of view for each aberration type can be anticipated and targeted during optimization for the correction or control of the aberrations in an optical system with freeform surfaces. This work does not place any symmetry constraints on the optical system, which could be packaged in a fully three dimensional geometry, without fold mirrors.
    Optics Express 11/2014; 22(22).
  • Shang Sun, Ningbo Yi, Wenjiao Yao, Qinghai Song, Shumin Xiao
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    ABSTRACT: We present a numerical simulation of second-harmonic generation (SHG) from a nonlinear magnetic metamaterial. By inserting a second-order nonlinear material in the high local field area of magnetic metamaterial, which consists of periodic arrays of paired thin silver strips, the convertion efficiency of SHG has been significantly enhanced by almost four orders of magnitude. The corresponding field patterns and further studies on dependance between SHG and symmetry of nonlinear crystal show that the increase of the conversion efficiency is attributed to the local field enhancement caused by the magnetic resonnance of the structure. Our researches provide an additional way to further improve the optical nonlinearity in nanostructures.
    Optics Express 11/2014; 22(22).
  • Hajime Nishioka
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    ABSTRACT: Stimulated Raman scattering driven by differential coupling of two phonon modes has been demonstrated. These phonon modes are coherently and strongly coupled by external fields via two-phonon excitation at the first Brillouin zone boundary. Up to 11th order of sidebands and a supercontinuum covering entire visible region have been observed. The original Stokes and anti-Stokes lines by the single-phonon stimulated Raman scattering were significantly suppressed.
    Optics Express 11/2014; 22(22).
  • V. A. Makarov, V. M. Petnikova, V. V. Shuvalov
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    ABSTRACT: An approximate analytical solution of the non-integrable problem of steady-state adiabatic interaction of a cnoidal wave with a breather is obtained. The solving algorithm is described by the example of one-dimensional problem of steady-state interaction of a plane cnoidal wave with circular polarization (the “information” signal) with orthogonally polarized rational soliton (the “control” signal) in an isotropic nonlinear gyrotropic medium with Kerr nonlinearity and second-order group-velocity dispersion. It is shown that such the interaction results in a strong amplitude and frequency modulation of the information signal and this modulation is localized in the region where intensity of the control signal changes.
    Optics Express 11/2014; 22(22).
  • Zhaofeng Li, Semih Cakmakyapan, Bayram Butun, Christina Daskalaki, Stelios Tzortzakis, Xiaodong Yang, Ekmel Ozbay
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    ABSTRACT: We demonstrate theoretically and experimentally that Fano resonances can be obtained in terahertz metamaterials that are composed of periodic continuous metallic wires dressed with periodic split ring resonators. An asymmetric Fano lineshape has been found in a narrow frequency range of the transmission curve. By using a transmission line combined with lumped element model, we are able to not only fit the transmission spectra of Fano resonance which is attributed to the coupling and interference between the transmission continuum of continuous metallic wires and the bright resonant mode of split ring resonators, but also reveal the capacitance change of the split ring resonators induced frequency shift of the Fano resonance. Therefore, the proposed theoretical model shows more capabilities than conventional coupled oscillator model in the design of Fano structures. The effective parameters of group refractive index of the Fano structure are retrieved, and a large group index more than 800 is obtained at the Fano resonance, which could be used for slow light devices.
    Optics Express 11/2014; 22(22).
  • Lu Sun, Bin Tang, Chun Jiang
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    ABSTRACT: We present a double-layer graphene waveguide which can greatly enhance spontaneous emission rate (SER) of electric dipole emitter placed in it. With properly designed parameters, numerical results show that SER enhanced factors as high as 2.127 × 106 and 1.941 × 105 can be achieved for two different dipole moment orientations, respectively. The influences of waveguide thickness, existence of supporting layer and gating electrodes, location offset of the emitter and dipole moment orientation on spontaneous emission enhancement are also studied in this paper. To the best of our knowledge, this is the first numerical study of SER enhanced effect in complicated graphene structure.
    Optics Express 11/2014; 22(22).
  • Yongkang Dong, Pengbai Xu, Hongying Zhang, Zhiwei Lu, Liang Chen, Xiaoyi Bao
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    ABSTRACT: A narrow bandwidth (2GHz) π-phase-shift flattop fiber Bragg grating (FBG) is proposed to achieve Brillouin optical time-domain analysis (BOTDA) for perfluorinated graded-index polymer optical fibers (GI-POFs) for the first time to best of our knowledge. Using the technique of BOTDA, we explore the evolution of mode coupling in perfluorinated GI-POFs by analyzing the Brillouin frequency shift (BFS) variation along the whole fiber, and compare them with that of silica graded index multimode fibers (GI-MMFs). The characteristics of mode coupling of GI-POFs and GI-MMFs were also investigated in terms of the speckle patterns at the output face of the two fibers. The results show that compared with silica GI-MMFs, GI-POFs exhibit more efficient mode coupling and the excellent ablility of mode scrambling regardless of alignment conditions.
    Optics Express 11/2014; 22(22).
  • [Show abstract] [Hide abstract]
    ABSTRACT: Optical traps have shown to be a flexible and powerful tool for 3D manipulations on the microscale. However, when it comes to sensitive measurements of particle displacements and forces thorough calibration procedures are required, which can be already demanding for trapped spheres. For asymmetric structures, with more complicated shapes, such as helical bacteria, novel calibration schemes need to be established. The paper describes different methods of how to extract various calibration parameters of a tiny helical bacterium, which is trapped and tracked in shape by scanning line optical tweezers. Tiny phase differences of the light scattered at each slope of the bacterium are measured by back focal plane interferometry, providing precise and high bandwidth information about fast deformations of the bacterium. A simplified theoretical model to estimate the optical forces on a chain like structure is presented. The methods presented here should be of interest to people that investigate optical trapping and tracking of asymmetric particles.
    Optics Express 10/2014; 22(21).
  • [Show abstract] [Hide abstract]
    ABSTRACT: We study the properties of broadband optical fields produced by two classes of axicons: reflective axicons creating fields with a frequency-independent cone angle, and diffractive axicons that generate fields with frequency-independent transverse scale. We also consider two different types of illumination: spectrally completely coherent pulses and spectrally incoherent (stationary) light assuming that the spectra are the same in both situations. In the former case we evaluate the spatiotemporal shape of the output field, and in the latter case its spatiotemporal coherence properties. Physical reasons for the substantially different fields produced by the two types of axicons are identified. Our results are useful for optical applications in which joint spatial and temporal field localization is desired.
    Optics Express 10/2014; 22(21).
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    ABSTRACT: Diffraction of a 3D optical beam on a multilayer phase-shifted Bragg grating (PSBG) is considered. It is shown that the PSBG enables optical computation of the spatial Laplace operator of the electromagnetic field components of the incident beam. The computation of the Laplacian is performed in reflection at normal incidence. As a special case, the parameters of the PSBG transforming the incident Gaussian beam into a Laguerre–Gaussian mode of order (1,0) are obtained. Presented numerical results demonstrate high quality of the Laplace operator computation and confirm the possibility of the formation of Laguerre–Gaussian mode. We expect the proposed applications to be useful for all-optical data processing.
    Optics Express 10/2014; 22(21).
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    ABSTRACT: A Nd:YLF laser at cryogenic temperature is demonstrated for the first time with orthogonally polarized simultaneous emission at 1047 nm and 1053 nm. By exploring the temperature dependence of the fluorescence and the absorption spectra from the Nd:YLF crystal, the feasibility of simultaneous emission at low temperature is achieved. Due to the local heating from the pump absorption, the optimal temperature with respect to the pump power for balancing output powers of simultaneous emission is thoroughly explored. At the optimal temperature of 138 K, the total output power of the simultaneous emission can reach 3.1 W at an incident pump power of 7.9 W, corresponding to the optical to optical slope efficiency up to 43%.
    Optics Express 10/2014; 22(21).
  • [Show abstract] [Hide abstract]
    ABSTRACT: We demonstrate the feasibility of passive compensation of the thermal lens effect in fused silica optics, placing suitable optical materials with negative dn/dT in the beam path of a high power near IR fiber laser. Following a brief overview of the involved mechanisms, photo-thermal absorption measurements with a Hartmann-Shack sensor are described, from which coefficients for surface/coating and bulk absorption in various materials are determined. Based on comprehensive knowledge of the 2D wavefront deformations resulting from absorption, passive compensation of thermally induced aberrations in complex optical systems is possible, as illustrated for an F-Theta objective. By means of caustic measurements during high-power operation we are able to demonstrate a 60% reduction of the focal shift in F-Theta lenses through passive compensation.
    Optics Express 10/2014; 22(21).
  • [Show abstract] [Hide abstract]
    ABSTRACT: A fiber optical parametric amplified optical orthogonal frequency division multiplexing (OFDM) signal with intensity modulation transfer (IMT) blocking is proposed. A novel blank carrier blocking method is adopted to suppress pump to signal intensity interference. Compared with regular optical signal, the IMT induced interference can be well blocked in the experiment. The error vector magnitude (EVM) and signal gain are also investigated in the experiment.
    Optics Express 10/2014; 22(21).
  • [Show abstract] [Hide abstract]
    ABSTRACT: We report on the fabrication and characterization of silicon-on-insulator (SOI) photonic crystal slabs (PCS) with commensurately embedded germanium quantum dot (QD) emitters for near-infrared light emission. Substrate pre-patterning defines preferential nucleation sites for the self-assembly of Ge QDs during epitaxial growth. Aligned two-dimensional photonic crystal slabs are then etched into the SOI layer. QD ordering enhances the photoluminescence output as compared to PCSs with randomly embedded QDs. Rigorously coupled wave analysis shows that coupling of the QD emitters to leaky modes of the PCS can be tuned via their location within the unit cell of the PCS.
    Optics Express 10/2014; 22(21).
  • [Show abstract] [Hide abstract]
    ABSTRACT: In this paper, we report on theoretical investigation of split mode resonant sensors based on fiber Bragg grating (FBG) ring resonators and π-shifted fiber Bragg grating (π-FBG) ring resonators. By using a π-shifted Bragg grating ring resonator (π-FBGRR) instead of a conventional fiber Bragg grating ring resonator (FBGRR), the symmetric and antisymmetric resonance branches (i.e., the eigen-modes of the perturbed system) show peculiar and very important features that can be exploited to improve the performance of the fiber optic spectroscopic sensors. In particular, the π-FBGRR symmetric resonance branch can be taylored to have a maximum splitting sensitivity to small environmental perturbations. This optimal condition has been found around the crossing points of the two asymmetric resonance branches, by properly choosing the physical parameters of the system. Then, high sensitivity splitting mode sensors are theoretically demonstrated showing, as an example, a strain sensitivity improvement of at least one order of magnitude over the state-of-the-art.
    Optics Express 10/2014; 22(21).
  • [Show abstract] [Hide abstract]
    ABSTRACT: This paper describes an extended and improved theory of the displacement of the objective speckle pattern resulting from displacement and/or deformation of a coherently illuminated diffuse object. Using the theory developed by Yamaguchi [Opt. Acta 28, 1359 (1981)], extended expressions are derived that include the influence of surface shape/gradients via the first order approximation of the shape as linear surface gradients. Both the original Yamaguchi expressions and the extended form derived here are shown experimentally to break down as the detector position moves away from the z-axis. As such, improved forms of the expressions are then presented, which remove some of the approximations used by Yamaguchi and can be used to predict the objective speckle displacement over a wide range of detector positions and surface slopes. Finally, these expressions are then verified experimentally for the speckle shifts resulting from object translations.
    Optics Express 10/2014; 22(21).