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NUSOD 2017 Preview: Strain tuning of absorption spectrum in a topological insulator
by Mathias Rosdahl Jensen (Thu, 22 Jun 2017)

Topological insulators have attracted a huge amount of attention in the field of condensed matter physics. This new state of matter is characterized by a bulk band gap and conducting surface states. The surface states have linear dispersion resembling relativistic Dirac fermions, in analogy with graphene. In contrast to graphene the 2D fermions on the […]


NUSOD 2017 Preview: Dynamic simulation of quantum cascade laser structures with optical nonlinearities
by Christian Jirauschek (Tue, 23 May 2017)

Quantum cascade lasers (QCLs) utilize quantized electron states as laser levels, which can be custom-tailored to the specific application by adequately designing the multi-quantum-well active region. With dephasing times between the upper and the lower laser level of about a picosecond, coherent light-matter interaction, along with other effects such as dispersion and spatial hole burning, governs […]


NUSOD 2017 Preview: Theory and simulations of self-pulsing in photonic crystal Fano lasers
by Thorsten S. Rasmussen (Tue, 16 May 2017)

Pulsed lasers are utilised in a wide variety of applications, especially optical communication systems, and in particular lasers that support passive pulse generation (self-pulsing). The phenomenon of self-pulsing was exclusively found in macroscopic lasers until recently, where self-pulsing in a microscopic photonic crystal Fano laser was reported [1]. The Fano laser (fig. 1) consists of […]


NUSOD 2017 Preview: Novel method for tuning and locking of coupled microring resonator filters
by Maziyar Milanizadeh (Mon, 08 May 2017)

The problem of circuit control can be particularly challenging in high-index-contrast photonic platforms, due to the large sensitivity of the optical parameters of the devices even to tiny geometrical variations occurring during fabrication, mainly inducing random phase errors. This is particularly true for high-order coupled microring resonator filters. The use of these devices cannot be […]


NUSOD 2017 Preview: Simulation of Nonlinear Polariton Dynamics in Microcavity wires for Polaritonic Integrated Circuits
by Gaby Slavcheva (Fri, 21 Apr 2017)

Integrated optical technologies for quantum computing based on linear optics have been under active development in the recent decade. However, the nonlinear optical interactions ‘on a chip’ offer new unexplored functionalities and may play a key role. Recently a new class of nonlinear system has emerged in which light and matter play equally important roles. […]

 

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Chinese Academy of Science
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