Contents
2013
Volume: 1 Issue 4
7 Article(s)
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Research Article
Abnormal behaviors of Goos–Hanchen shift in hyperbolic metamaterials made of aluminum zinc oxide materials
Jing Zhao, Hao Zhang, Xiangchao Zhang, Dahai Li, Hongliang Lu, and Min Xu
In this paper, the Goos–Hanchen shift (GHS) at the interface between air and the aluminum zinc oxide (AZO)/ZnO hyperbolic metamaterial (AZO-HMM) is theoretically examined. The results herein show that AZO-HMM can enhance the GHS at the interface to a value at 3 orders of the incident wavelength under special conditionsIn this paper, the Goos–Hanchen shift (GHS) at the interface between air and the aluminum zinc oxide (AZO)/ZnO hyperbolic metamaterial (AZO-HMM) is theoretically examined. The results herein show that AZO-HMM can enhance the GHS at the interface to a value at 3 orders of the incident wavelength under special conditions, which is much larger than conventional GHS values. Moreover, the GHS can be tuned to be negative or positive by changing the incident wavelength or the volume fraction of AZO..
Photonics Research
- Publication Date: Jan. 01, 1900
- Vol. 1, Issue 4, 160 (2013)
Lasers and Laser Optics
Engineered quasi-phase-matching for laser techniques [Invited]
X. P. Hu, P. Xu, and S. N. Zhu
The quasi-phase-matching (QPM) technique has drawn increasing attention due to its promising applications in areas such as nonlinear frequency conversion for generating new laser light sources. In this paper, we will briefly review the main achievements in this field.Wegive a brief introduction of the invention ofQPMthThe quasi-phase-matching (QPM) technique has drawn increasing attention due to its promising applications in areas such as nonlinear frequency conversion for generating new laser light sources. In this paper, we will briefly review the main achievements in this field.Wegive a brief introduction of the invention ofQPMtheory, followed by the QPM-material fabrication techniques. When combing QPM with the solid-state laser techniques, various laser light sources, such as single-wavelength visible lasers and ultraviolet lasers, red–green–blue three-fundamentalcolor lasers, optical parametric oscillators in different temporal scales, and passive mode-locking lasers based on cascaded second-order nonlinearity, have been presented. The QPM technique has been extended to quantum optics recently, and prospects for the studies are bright..
Photonics Research
- Publication Date: Jan. 01, 1900
- Vol. 1, Issue 4, 171 (2013)
Coherent beam combination of fiber lasers with a strongly confined tapered self-imaging waveguide: theoretical modeling and simulation
Rumao Tao, Xiaolin Wang, Hu Xiao, Pu Zhou, and Lei Si
Coherent beam combination (CBC) of fiber lasers based on self-imaging properties of a strongly confined tapered waveguide (SCTW) is studied systematically. Analytical formulas are derived for the positions, amplitudes, and phases of the N self-images at the output of a SCTW, which are important for quantitative analysiCoherent beam combination (CBC) of fiber lasers based on self-imaging properties of a strongly confined tapered waveguide (SCTW) is studied systematically. Analytical formulas are derived for the positions, amplitudes, and phases of the
Photonics Research
- Publication Date: Oct. 07, 2013
- Vol. 1, Issue 4, 186 (2013)
Materials
High-contrast, high-resolution photochromic silicone polymer based on photoswitchable [Ru(bpy)2OSO]PF6 building blocks
Kristin Springfeld, Volker Dieckmann, and Mirco Imlau
The implementation of photoinduced linkage isomerism in molecular-based optical materials represents a promising approach for the synthesis of high-contrast, high-resolution photosensitive materials that are necessary for high-density (holographic) data storage and/or real-three-dimensional (holographic) displays. The The implementation of photoinduced linkage isomerism in molecular-based optical materials represents a promising approach for the synthesis of high-contrast, high-resolution photosensitive materials that are necessary for high-density (holographic) data storage and/or real-three-dimensional (holographic) displays. The unsolved task of embedding a photofunctional coordination complex into a matrix like polymer polydimethylsiloxane (PDMS) with photoinduced isomerism of a SO-bond in the sulfoxide compound [Ru(bpy)2OSO]PF6 is addressed. This approach allows to preserve the spectral properties within the solid dielectric environment, with an impact of PDMS on population and relaxation dynamics. All data are discussed in the framework of photofunctionality, storage, and display applications..
Photonics Research
- Publication Date: Jan. 01, 1900
- Vol. 1, Issue 4, 197 (2013)
Optics at Surfaces
Self-referenced measurements of the dielectric properties of metals using terahertz time-domain spectroscopy via the excitation of surface plasmon-polaritons
Shashank Pandey, Shuchang Liu, Barun Gupta, and Ajay Nahata
We present experimental measurements that show direct determination of the dielectric properties of various metals relevant to plasmonics. In contrast to traditional measurements that typically rely on transmission and reflectance measurements, we launch surface plasmon-polaritons on a variety of different substrates aWe present experimental measurements that show direct determination of the dielectric properties of various metals relevant to plasmonics. In contrast to traditional measurements that typically rely on transmission and reflectance measurements, we launch surface plasmon-polaritons on a variety of different substrates and measure the propagation properties using terahertz time-domain spectroscopy. Surprisingly, we find that the extracted values for the dielectric constant for these metals differ by orders of magnitude from published data. In order to validate the obtained results, we separately measure the 1∕e decay length, both along the propagation direction and normal to the metal surface, and show that the results are fully self-consistent with experimental data. The generality of the measurement technique makes it a useful tool to estimate the properties not only of planar conducting substrates but also a wide variety of more complex plasmonic structures..
Photonics Research
- Publication Date: Jan. 01, 1900
- Vol. 1, Issue 4, 148 (2013)
Finite difference time domain study of light transmission through multihole nanostructures in metallic film
Mehrdad Irannejad, Mustafa Yavuz, and Bo Cui
The optical transmittance properties of single-hole arrays and three-hole chain (vertical) arrays with different geometrical parameters were numerically investigated. It was shown that on increasing the vertical distance between the holes in the hole chain array, the FWHM of the (1,0) resonance mode was decreased and mThe optical transmittance properties of single-hole arrays and three-hole chain (vertical) arrays with different geometrical parameters were numerically investigated. It was shown that on increasing the vertical distance between the holes in the hole chain array, the FWHM of the (1,0) resonance mode was decreased and minimum FWHM of 29 nm was obtained for a vertical gap of 48 nm between each side hole. A 1.5–2.0 times larger transmittance enhancement was observed by varying the incident light polarization from the y axis to the x axis. Furthermore, it was found that the optical transmittance of the hole chain array in the case of linearly x-axis polarized incident electromagnetic (EM) field was ～6 times larger than that linearly y-axis polarized incident EM field..
Photonics Research
- Publication Date: Jan. 01, 1900
- Vol. 1, Issue 4, 154 (2013)
Stratified composite-loaded plasmonic waveguide for sensing biofluids
Rimlee Deb Roy, Rik Chattopadhyay, and Shyamal K. Bhadra
A new integrated plasmonic waveguide sensor is reported with high sensitivity (1600 nm/RIU). The integrated structure, loaded with stratified composite, makes this device robust and easy to fabricate on a chip to use as a sensor probe. The device works on the principle of resonant coupling between surface plasmon and fA new integrated plasmonic waveguide sensor is reported with high sensitivity (
Photonics Research
- Publication Date: Oct. 01, 2013
- Vol. 1, Issue 4, 164 (2013)
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