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Sina Khorasani

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Publications associées (9)

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Excitonic Emission of Monolayer Semiconductors Near-Field Coupled to High-Q Microresonators

Tobias Kippenberg, Clément Christian Javerzac-Galy, Ryan Daniel Schilling, Sina Khorasani, Nicolas Piro Mastracchio, Anshuman Kumar

We present quantum yield measurements of single layer WSe2 (1L-WSe2) integrated with high-Q (Q > 106) optical microdisk cavities, using an efficient (η > 90%) near-field coupling scheme based on a tapered optical fiber. Coupling of the excitonic emission i ...

2018

Third-Order Optical Nonlinearity in Two-Dimensional Transition Metal Dichalcogenides

Sina Khorasani

We present a detailed calculation of the linear and nonlinear optical response of four types of monolayer twodimensional (2D) transition-metal dichalcogenides (TMDCs), having the formula MX2 with M = Mo, W and X = S, Se. The calculations are based on 6-ban ...

2018

Today's standard fabrication processes are just capable of manufacturing slab of photonic and phononic crystals, so an efficient method for analysis of these crystals is indispensable. Plane wave expansion (PWE) as a widely used method in studying photonic ...

Ieee-Inst Electrical Electronics Engineers Inc2017

Nonlinear graphene quantum capacitors for electro-optics

Sina Khorasani, Akshay Koottandavida

Owing to its peculiar energy dispersion, the quantum capacitance property of graphene can be exploited in a two- dimensional layered capacitor configuration. Using graphene and boron nitride, respectively, as the electrodes and the insulating dielectric, a ...

Springer Nature2017

Optical wave evolution due to interaction with elastic wave in a phoxonic crystal slab waveguide

Sina Khorasani

Phoxonic crystal as a means of guiding and confining electromagnetic and elastic waves has already attracted attentions. Lack of exact knowledge on how these two types of waves interact inside this crystal and how electromagnetic wave evolves through this ...

Springer2017

Diamond Configuration for Non-Reciprocal Transmission

Sina Khorasani

A system scheme is presented, which allows non-reciprocal wave transmission or directional amplification of electromagnetic signals, using a boxed four-node method. Edges represent strong hopping interactions and diagonals stand for weak parametric interac ...

Ieee-Inst Electrical Electronics Engineers Inc2017

Optical Bistable Switching With Kerr Nonlinear Materials Exhibiting a Finite Response Time in Two-Dimensional Photonic Crystals

Ali Naqavi, Sina Khorasani

Effect of relaxation time on the performance of photonic crystal optical bistable switches based on Kerr nolinearity is discussed. This paper deals with optical pulses with the duration of about 50 ps. In such cases the steady state response of the optical ...

Spie-Int Soc Optical Engineering, Po Box 10, Bellingham, Wa 98227-0010 Usa2010

Optimum operation of single cavity photonic switches

Ali Naqavi, Sina Khorasani

In this work, an optimum frequency is found for the operation of single cavity photonic switches. At this optimum point, the transmission contrast of ON and OFF states takes its highest value, while keeping the device power threshold relatively low and the ...

Spie-Int Soc Optical Engineering, Po Box 10, Bellingham, Wa 98227-0010 Usa2010

Extension of Unified Formulation for the FDTD Simulation of Nonlinear Dispersive Media

Ali Naqavi, Sina Khorasani

A simple approach is extended for the simulation of Kerr-nonlinear and/or dispersive media through the finite-difference time-domain method. The scheme is able to include different types of linear and nonlinear dispersion in a single and unified formulatio ...

Institute of Electrical and Electronics Engineers2010