Results 71 to 80 of about 319,656 (388)

Saturation Gain Characteristics of Quantum-Well Semiconductor Optical Amplifier

مجلة النهرين للعلوم الهندسية, 2011
Recently, there is an increasing interest onquantum well (QW) semiconductor optical amplifier in optical communications and optical signal processing applications.
Alhuda A. Al-mfrji
doaj  

Calibration of TLM Model for Semiconductor Optical Amplifier by Heuristic Parameters' Extraction

Journal of Microwaves, Optoelectronics and Electromagnetic Applications
The systemic behavior of a Semiconductor Optical Amplifier model was optimized through extensive simulations, reaching reasonable approximation to experimental obtained from commercial devices for the optical gain versus bias current, for different ...
P. Rocha, C. M. Gallep, T. Sutili, E. Conforti   +3 more
doaj   +1 more source

Study of Temperature Effects on the Design of Active Region for 808 nm High-Power Semiconductor Laser

Crystals, 2023
High-power, broad-area, semiconductor lasers are attractive sources for material processing, aerospace, and laser pumping. The design of the active region is crucial to achieve the required high power and electro-optical conversion efficiency, since the ...
Shunhua Wu, Te Li, Zhenfu Wang, Lang Chen, Jiachen Zhang, Junyue Zhang, Jiachen Liu, Yeqi Zhang, Liting Deng   +8 more
doaj   +1 more source

Highly efficient non-degenerate four-wave mixing under dual-mode injection in InP/InAs quantum-dash and quantum-dot lasers at 1.55 μm [PDF]

, 2015
This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Appl. Phys. Lett.
Arsenijević, Dejan, Bimberg, Dieter, Grillot, F., Huang, Heming, Sadeev, Tagir, Schires, Kevin   +5 more
core   +1 more source

Synchrotron Radiation for Quantum Technology

Advanced Functional Materials, EarlyView.
Materials and interfaces underpin quantum technologies, with synchrotron and FEL methods key to understanding and optimizing them. Advances span superconducting and semiconducting qubits, 2D materials, and topological systems, where strain, defects, and interfaces govern performance.
Oliver Rader, Sakura Pascarelli, Klaus Attenkofer, Anna A. Makarova, Karsten Holldack, Kai Rossnagel, Kristiaan Temst, George Kourousias, Stefano Carretta, Caterina Biscari, Helmut Dosch   +10 more
wiley   +1 more source

Optical Spectral Singularities as Threshold Resonances

, 2011
Spectral singularities are among generic mathematical features of complex scattering potentials. Physically they correspond to scattering states that behave like zero-width resonances.
Mostafazadeh, Ali
core   +1 more source

Multiwavelength fiber laser based on bidirectional lyot filter in conjunction with intensity dependent loss mechanism [PDF]

, 2018
We experimentally demonstrate a multiwavelength fiber laser (MWFL) based on bidirectional Lyot filter. A semiconductor optical amplifier (SOA) is used as the gain medium, while its combination with polarization controllers (PCs) and polarization beam ...
Abdul Hamid, Nur Jannah, Abdul Kadir, Aeslina, Hashim, Azini Amiza, Hassan, Mohd Ikhmal Haqeem, Hissham, Nur Fatin Nabila, Huda Hashar, Nurul Nabila, Md Din, Mohd Fadhil, S.M. Johan, Siti Farhanah, Sarani, Noor Amira   +8 more
core   +4 more sources

Gain-embedded meta mirrors for optically pumped semiconductor disk lasers

Optics Express, 2019
We propose and analyze an active mirror structure that uses a subwavelength grating reflector combined with optical gain. The structure is designed to be directly bonded to a thermal substrate (such as diamond) for efficient heat removal. We present optical wave propagation and thermal transport analysis and show that such a structure is well suited ...
Zhou Yang, David Lidsky, Mansoor Sheik-Bahae   +2 more
openaire   +3 more sources

Cu‐Based MOF/TiO2 Composite Nanomaterials for Photocatalytic Hydrogen Generation and the Role of Copper

Advanced Functional Materials, EarlyView.
HKUST‐1/TiO2 composite materials show a very high photocatalytic hydrogen evolution rate which increases as a function of the irradiation time until reaching a plateau and even surpasses the performance of the 1%Pt/TiO2 material after three photocatalytic cycles.
Alisha Khan, Marie Le Pivert, Alireza Ranjbari, Diana Dragoe, Daniel Bahena‐Uribe, Christophe Colbeau‐Justin, Christian Herrero, Dorota Rutkowska‐Zbik, Johnny Deschamps, Hynd Remita   +9 more
wiley   +1 more source

Reality or fantasy—Perovskite semiconductor laser diodes

EcoMat, 2021
Perovskite semiconductor has emerged as a promising laser gain medium; however, it is still a challenge to fabricate electrically pumped perovskite lasers due to the insufficient electrical‐to‐optical conversion efficiency.
Wei Gao, Siu Fung Yu
doaj   +1 more source