We present an analysis of Quantum Dot (QD) based Push-Pull modulated DFB (PP-DFB) laser, showing enhanced small and large signal modulation bandwidth thanks to the interaction between two longitudinal cavity modes. Using an analysis of the cavity modes at threshold, we propose a simple yet ...
Two-dimensional numerical simulation of carrier transport in laser structures, which allows calculation of the efficiency of injected carrier consumption by the active region, and the dependence of the laser current on applied voltage are also discussed. Calculations of quantum efficiency and threshold ...
3P2b_1179: In-situ laser interference for the control of randomness at nano-scale 2937 12:00 3P2b_1181: Single Photon Sources Based on III-V Quantum Dot 2945 16:00 3P2a_1174: Co-Design of Segmented Modulator and CMOS Driver for PAM4 Si-Photonic Transceivers 2946 14:00 3A2b_953: Quant...
The laser structure can be designed with a simple quantum cascade scheme. Our calculation shows that with the electrical pump, it is possible to achieve population inversion between the two subbands at local k space where the light-hole effective mass is inverted. Optical gain of the order 100...
Careful adjustments of material parameters led to an excellent agreement between simulation and measurements. Simulation results show that the maximum output power is limited by electron leakage from quantum wells. 展开 关键词: long-wavelength vertical-cavity surface-emitting laser simulation electron ...
The quantum simulator we describe consists of an artificial atom or molecule made from a trapped quantum gas. The analog of the atomic or molecular binding potential is the tunable AC Stark potential of an optical trap (Fig. 1a), and the analog of the pulsed laser’s electric field is an...
Heterogeneous integration for on-chip quantum photonic circuits with single quantum dot devices. Nat. Commun. 8 (1), 889 https://doi.org/10.1038/s41467-017-00987-6 with permission from Springer Nature. Sign in to download hi-res image Fig. 1. Examples of FDTD simulation results. (A) ...
Forward light scatter is the intensity of light scattered at small angles (0–13°) from the incident laser beam, while side light scatter is the intensity of light scattered at 90° (± 13°) from the incident laser beam ([3], [28]). These measurements are acquired by the flow cytome...
The Kibble-Zurek mechanism is the paradigm to account for the nonadiabatic dynamics of a system across a continuous phase transition. Its study in the quantum regime is hindered by the requisite of ground state cooling. We report the experimental quantum
Novel optimized low power design of single-precision floating-point adder using Quantum-dot Cellular Automata Moreover, the operations on floating-point numbers decide the speed and accuracy of the arithmetic unit. Hence, it is crucial to design a precise ... AA Gudivada,GF Sudha - 《Journal ...