Search Results - "Alam, M Zahirul"

Large optical nonlinearity of indium tin oxide in its epsilon-near-zero region by Alam, M. Zahirul, De Leon, Israel, Boyd, Robert W.

“…Nonlinear optical phenomena are crucial for a broad range of applications, such as microscopy, all-optical data processing, and quantum information. However,…”
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Broadband frequency translation through time refraction in an epsilon-near-zero material by Zhou, Yiyu, Alam, M. Zahirul, Karimi, Mohammad, Upham, Jeremy, Reshef, Orad, Liu, Cong, Willner, Alan E., Boyd, Robert W.

“…Space-time duality in paraxial optical wave propagation implies the existence of intriguing effects when light interacts with a material exhibiting two…”
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Ultra-high-Q resonances in plasmonic metasurfaces by Bin-Alam, M. Saad, Reshef, Orad, Mamchur, Yaryna, Alam, M. Zahirul, Carlow, Graham, Upham, Jeremy, Sullivan, Brian T., Ménard, Jean-Michel, Huttunen, Mikko J., Boyd, Robert W., Dolgaleva, Ksenia

“…Plasmonic nanostructures hold promise for the realization of ultra-thin sub-wavelength devices, reducing power operating thresholds and enabling nonlinear…”
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Large optical nonlinearity of nanoantennas coupled to an epsilon-near-zero material by Alam, M. Zahirul, Schulz, Sebastian A., Upham, Jeremy, De Leon, Israel, Boyd, Robert W.

“…The size and operating energy of a nonlinear optical device are fundamentally constrained by the weakness of the nonlinear optical response of common materials…”
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Nonlinear optical effects in epsilon-near-zero media by Reshef, Orad, De Leon, Israel, Alam, M. Zahirul, Boyd, Robert W.

“…Efficient nonlinear optical interactions are essential for many applications in modern photonics. However, they typically require intense laser sources and…”
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Time-varying gradient metasurface with applications in all-optical beam steering by Karimi, Mohammad, Alam, M. Zahirul, Upham, Jeremy, Reshef, Orad, Boyd, Robert W.

“…Integrating the large, subpicosecond nonlinear optical response of epsilon-near-zero (ENZ) materials with the broad design freedoms of plasmonic metasurfaces…”
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Dynamically controlling local field enhancement at an epsilon-near-zero/dielectric interface via nonlinearities of an epsilon-near-zero medium by Baev, Alexander, Prasad, Paras N., Alam, M. Zahirul, Boyd, Robert W.

“…For p-polarized light incident on an interface between an ordinary dielectric and an epsilon-near-zero (ENZ) material, an enhancement of the component of the…”
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Feature issue introduction: temporal and spatiotemporal metamaterials by Huidobro, Paloma A, Alam, M Zahirul, Engheta, Nader, Pacheco-Peña, Victor

“…Temporal modulation of material parameters provides a new degree of freedom for metamaterials, metasurfaces and wave-matter interactions as a whole. In…”
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Interactions of Fundamental Mie Modes with Thin Epsilon-near-Zero Substrates by Karimi, Mohammad, Awan, Kashif Masud, Vaddi, Yaswant, Alaee, Rasoul, Upham, Jeremy, Alam, M. Zahirul, Boyd, Robert W.

“…Extensive research has focused on Mie modes in dielectric nanoresonators, enabling the creation of thin optical devices surpassing their bulk counterparts…”
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Selective Excitation of Radially and Azimuthally Polarized Optical Fiber Cladding Modes by Alam, M. Z., Albert, J.

“…The dominant polarization properties of the cladding modes excited by tilted fiber Bragg gratings are investigated. Even in conventional cylindrically…”
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Adiabatic Frequency Conversion Using a Time-Varying Epsilon-Near-Zero Metasurface by Pang, Kai, Alam, M. Zahirul, Zhou, Yiyu, Liu, Cong, Reshef, Orad, Manukyan, Karapet, Voegtle, Matt, Pennathur, Anuj, Tseng, Cindy, Su, Xinzhou, Song, Hao, Zhao, Zhe, Zhang, Runzhou, Song, Haoqian, Hu, Nanzhe, Almaiman, Ahmed, Dawlaty, Jahan M, Boyd, Robert W, Tur, Moshe, Willner, Alan E

“…A time-dependent change in the refractive index of a material leads to a change in the frequency of an optical beam passing through that medium. Here, we…”
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Dependence of the coupling properties between a plasmonic antenna array and a sub-wavelength epsilon-near-zero film on structural and material parameters by Manukyan, Karapet, Alam, M. Zahirul, Liu, Cong, Pang, Kai, Song, Hao, Zhao, Zhe, Tur, Moshe, Boyd, Robert W., Willner, Alan E.

“…The resonance properties of a plasmonic dipole antenna array depend on its geometry and the properties of its surrounding medium. The linear optical properties…”
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Strongly Coupled Plasmon Polaritons in Gold and Epsilon-Near-Zero Bifilms by Choudhary, Saumya, Iqbal, Saleem, Karimi, Mohammad, Reshef, Orad, Alam, M. Zahirul, Boyd, Robert W.

“…Epsilon-near-zero (ENZ) polaritons in a thin transparent conducting-oxide film exhibit a significant electric field enhancement and localization within the…”
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Relaxed Phase-Matching Constraints in Zero-Index Waveguides by Gagnon, Justin R, Reshef, Orad, Espinosa, Daniel H G, Alam, M Zahirul, Vulis, Daryl I, Knall, Erik N, Upham, Jeremy, Li, Yang, Dolgaleva, Ksenia, Mazur, Eric, Boyd, Robert W

“…The utility of all parametric nonlinear optical processes is hampered by phase-matching requirements. Quasi-phase-matching, birefringent phase matching, and…”
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Kinematics and nonlinear control of an electromagnetic actuated CVT system for passenger vehicle by Rahman, Ataur, Sharif, Sazzad Bin, Hossain, Altab, Mohiuddin, A. K. M., Zahirul Alam, A. H. M.

“…An electromagnetic actuated continuously variable transmission (EMA-CVT) system is developed by two sets of electromagnetic actuators (solenoid) located on…”
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PLL-BASED 3? INVERTER CIRCUIT FOR MICROGRID SYSTEM OPERATED BY ELECTROSTATIC GENERATOR by Motakabber, S.M.A, Rahman, Tawfikur, Ibrahimy, Muhammad I., Alam, A. H. M. Zahirul

“…A current source control based PLL (phase lock loop) technique is one of the most efficient methods for modern 3? synchronized grid power systems. When an…”
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Enhanced Nonlinear Optical Responses of Layered Epsilon-Near-Zero Metamaterials at Visible Frequencies by Suresh, Sisira, Reshef, Orad, Alam, M. Zahirul, Upham, Jeremy, Karimi, Mohammad, Boyd, Robert W

“…ACS Photonics 8, 125 (2021) Optical materials with vanishing dielectric permittivity, known as epsilon-near-zero (ENZ) materials, have been shown to possess…”
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Enhanced Nonlinear Optical Responses of Layered Epsilon-near-Zero Metamaterials at Visible Frequencies by Suresh, Sisira, Reshef, Orad, Alam, M. Zahirul, Upham, Jeremy, Karimi, Mohammad, Boyd, Robert W

“…Optical materials with vanishing dielectric permittivity, known as epsilon-near-zero (ENZ) materials, have been shown to possess enhanced nonlinear optical…”
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Interaction between a Nanoantenna Array and an Epsilon-Near-Zero Thin Film: Ultrastrong Coupling and Resonance Pinning for Engineered Highly Nonlinear Metasurface by Manukyan, Karapet, Alam, M. Zahirul, Liu, Cong, Pang, Kai, Song, Hao, Zhao, Zhe, Tur, Moshe, Boyd, Robert W., Willner, Alan E.

“…We investigate the thickness-, distance- and loss-dependent interaction between nanoantenna arrays and an epsilon-near-zero (ENZ) thin film. We show the…”
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Adaptive PID Controller Using for Speed Control of the BLDC Motor by Mahmud, Md, Motakabber, S. M. A., Zahirul Alam, A. H. M., Nordin, Anis Nurashikin

“…Brushless DC Motor (BLDCM) is broadly utilized for some mechanical applications, given their high efficiency, high torque, and low volume. It is very hard to…”
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