Results 1 to 10 of about 308,424 (390)

High-Efficiency Optical Gain in Type-II Semiconductor Nanocrystals of Alloyed Colloidal Quantum Wells [PDF]

Journal of Physical Chemistry Letters, 2017
Colloidal nanocrystals having controlled size, tailored shape, and tuned composition have been explored for optical gain and lasing. Among these, nanocrystals having Type-II electronic structure have been introduced toward low-threshold gain. However, to
Burak Güzeltürk, Yusuf Keleştemur, Murat Olutaş, Qiuyang Li, Tianquan Lian, Hilmi Volkan Demir   +5 more
openalex   +2 more sources

Design, Modeling, and Characterization of Hot Electron Light Emission and Lasing in Semiconductor Heterostructure-VCSOA with Optical Gain up to 36 dB

ARO-The Scientific Journal of Koya University, 2022
Vertical-cavity semiconductor optical amplifiers (VCSOAs) are interesting devices for optical communication applications. In this work, we have studied the characteristics of gain spectra and amplifier bandwidth in reflection mode at 1300 nm GaInNAs ...
Hawro I. Yaba, Faten A. Chaqmaqchee
doaj   +3 more sources

Gain-switched semiconductor lasers with pulsed excitation and optical injection for dual-comb spectroscopy

Optics Express, 2020
In this work we demonstrate the capability of two gain-switched optically injected semiconductor lasers to perform high-resolution dual-comb spectroscopy.
Clara Quevedo-Galán, Vicente Durán, Alejandro Rosado, Antonio Pérez Serrano, J. M. G. Tijero, I. Esquivias   +5 more
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Tunable Characteristics of Optical Frequency Combs from InGaAs/GaAs Two-Section Mode-Locked Lasers. [PDF]

Sensors (Basel)
We observed tunable characteristics of optical frequency combs (OFCs) generated from InGaAs/GaAs double quantum wells (DQWs) asymmetric waveguide two-section mode-locked lasers (TS-MLLs).
Weng D, Liang Y, Qiao Z, Li X, Sia JXB, Li Z, Li L, Chen H, Zhao Z, Qu Y, Liu G, Liu C, Wang H.   +12 more
europepmc   +2 more sources

27 dB gain III–V-on-silicon semiconductor optical amplifier with > 17 dBm output power

Optics Express, 2019
Hybrid III-V-on-silicon semiconductor optical amplifiers with high-gain and high-output-power are important in many applications such as transceivers, integrated microwave photonics and photonic beamforming.
Kasper Van Gasse, Ruijun Wang, Günther Roelkens   +2 more
openalex   +2 more sources

Semiconductor Optical Amplifiers with Wide Gain Bandwidth and Enhanced Polarization Insensitivity Based on Tensile-Strained Quantum Wells [PDF]

Sensors
The paper presents a wide-bandwidth, low-polarization semiconductor optical amplifier (SOA) based on strained quantum wells. By enhancing the material gain of quantum wells for TM modes, we have extended the gain bandwidth of the SOA while reducing its ...
Hui Tang, Meng Zhang, Changjin Yang, Lei Liang, Li Qin, Yuxin Lei, Peng Jia, Yongyi Chen, Yubing Wang, Yue Song, Cheng Qiu, Yuntao Cao, Dabing Li, Lijun Wang   +13 more
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Optical efficiency and gain dynamics of modelocked semiconductor disk lasers

Optics Express, 2017
Compact optically pumped passively modelocked semiconductor disk lasers (SDLs) based on active quantum wells (QWs) such as vertical external-cavity surface-emitting lasers (VECSELs) or modelocked integrated external-cavity surface-emitting lasers ...
C. G. E. Alfieri, Dominik Waldburger, S. M. Link, E. Gini, M. Golling, G. Eisenstein, U. Keller   +6 more
openalex   +2 more sources

Generation of optical frequency combs in optically injected integrated gain-switched semiconductor lasers and their applications in Doppler LIDAR. [PDF]

Nanoscale Adv
Zhang Y, Chen Y, Zhou M, Liu Y, Ma W, Gang Z, Sun Z, Zheng J, Chen X, Li P.   +9 more
europepmc   +2 more sources

Quantum Shells Boost the Optical Gain of Lasing Media.

ACS Nano, 2022
Auger decay of multiple excitons represents a significant obstacle to photonic applications of semiconductor quantum dots (QDs). This nonradiative process is particularly detrimental to the performance of QD-based electroluminescent and lasing devices ...
James P Cassidy, B. Diroll, Navendu Mondal, David B. Berkinsky, Kehui Zhao, Dulanjan Harankahage, Dmitry A. Porotnikov, R. Gately, Dmitriy Khon, Andrew H. Proppe, M. Bawendi, R. Schaller, A. Malko, M. Zamkov   +13 more
semanticscholar   +1 more source

Gain of TlBr/BrCl Quantum Dot Semiconductor Optical Amplifier

Journal of Electrical and Computer Engineering, 2023
This work studies the thallium halogenide TlBr/BrCl quantum dot (QD) semiconductor structure and specifies its optical properties. This QD structure is poorly studied. High gain is obtained, with two peaks at 800 and 3000 nm.
Baqer O. Al-Nashy, Buraq T. Sh. Al-Mosawi, Mushtaq Obaid Oleiwi, Amin H. Al-Khursan   +3 more
doaj   +1 more source