Results 81 to 90 of about 5,425 (221)

Offset quantum-well method for tunable distributed Bragg reflector lasers and electro-absorption modulated distributed feedback lasers [PDF]

, 2005
A two-section offset quantum-well structure tunable laser with a tuning range of 7 nm was fabricated using offset quantum-well method. The distributed Bragg reflector (DBR) was realized just by selectively wet etching the multiquantum-well (MQW) layer ...
Ding, Ying, Kan, Qiang, Wang, Baojun, Wang, Lufeng, Wang, Wei, Zhao, Lingjuan, Zhou, Fan, Zhu, Hongliang   +7 more
core  

Ion-exchanged waveguide add/drop filter [PDF]

, 2001
An add/drop filter is fabricated using ion-exchanged waveguides and photowritten Bragg gratings. The device exhibits 20 dB extinction ratios and 3 dB bandwidths of 0.4 nm (100 GHz)
Geraghty, D. F., Honkanen, S., Morrell, M., Peyghambarian, N., Provenzano, D., Yariv, A.   +5 more
core   +2 more sources

In Situ (Scanning) Transmission Electron Microscopy Investigation of Phase Transformation Mechanism in LiNiO2 Cathode During Cycling

Batteries &Supercaps, Volume 9, Issue 3, March 2026.
In situ transmission electron microscopy (TEM) reveals real‐time degradation pathways in O3‐type LiNiO2 cathodes during cycling. Phase transitions, Li/Ni cation mixing, oxygen loss, and c‐axis expansion are mapped using HRTEM, 4D‐STEM, and electron energy loss spectroscopy (EELS), linking structural instability to hindered Li+ diffusion.
Ioannis Siachos, Xiaodong Liu, Weiqun Li, Amirafshar Moshtaghpour, Annalena R. Genreith‐Schriever, Tingting Yang, Penghan Lu, Rafal E. Dunin‐Borkowski, Clare P. Grey, B. Layla Mehdi   +9 more
wiley   +1 more source

Perovskite lasers: From optical pumping to electrical pumping

FlexMat, Volume 3, Issue 1, Page 101-116, March 2026.
This review highlights recent progress in perovskite lasers, emphasizing material engineering, cavity design, and lasing mechanisms in halide perovskites. It also discusses advances in continuous‐wave operation and evaluates the prospects for electrically pumped devices, while identifying key challenges that must be addressed to fully realize the ...
Kang Wang, Maria Vasilopoulou, Thamraa Alshahrani, Ilhwan Ryu, Muhammad Fazri bin Jasmin, Muhammad Danish Danial bin Zulkifli, Aliff Muhaimin bin Kamaruzaman, Muhammad Nafie bin Jakariah, Peng Gao, Abd Rashid bin Mohd Yusoff, Yong Sheng Zhao   +10 more
wiley   +1 more source

Advances in Micro‐Transfer Printing of Lithium Niobate Thin‐Films for Silicon Photonic Devices

Nanophotonics, Volume 15, Issue 6, 27 March 2026.
ABSTRACT Silicon and silicon nitride waveguide platforms have established themselves as ideal candidates for high‐volume photonic integration, owing to their compatibility with mature semiconductor manufacturing processes. In parallel, lithium niobate has garnered significant attention for its superior electro‐optic and nonlinear properties ...
Margot Niels, Tom Vandekerckhove, Lisa De Jaeger, Maximilien Billet, Bart Kuyken   +4 more
wiley   +1 more source

Mutual optical injection in coupled DBR laser pairs [PDF]

, 2009
We report an experimental study of nonlinear effects, characteristic of mutual optical coupling, in an ultra-short coupling regime observed in a distributed Bragg reflector laser pair fabricated on the same chip.
Avila, Buldu, Diez, Erzgraber, Fujiwara, Hegarty, Heil, Hohl, I. F. Lealman, I. Henning, Jiang, Kelly, L. J. Rivers, Li, Li, M. J. Adams, M. P. Vaughan, Mirasso, Mulet, Mulet, P. Cannard, Perez, Revuelta, Rogister, Tang, Tatham, Vicente, Vicente, Vicente, Vicente, Wieczorek, Wille, Zhang, Zhang, Zhang   +34 more
core   +1 more source

Tuning Vibrational Coupling Strength Between Hyperbolic Media and Organic Molecules

Nanophotonics, Volume 15, Issue 6, 27 March 2026.
Molecular polaritons, hybrid modes formed by vibrational bond modes and optical modes, typically in cavities, are investigated with the intent of inducing stronger coupling for the purpose of targeted control in a variety of application spaces. Here, we focus on decreasing mode volumes and assessing a variety of tuning parameters to increase coupling ...
Courtney L. Ragle, John E. Buchner, In‐Ho Lee, Youngji Kim, Byung‐Il Noh, Saurabh Dixit, Joseph Matson, Jiahan Li, Siyuan Dai, J. H. Edgar, Sang‐Hyun Oh, Lauren E. Buchanan, Joshua D. Caldwell   +12 more
wiley   +1 more source

Light-Output Enhancement of GaN-Based Light-Emitting Diodes with Three-Dimensional Backside Reflectors Patterned by Microscale Cone Array

The Scientific World Journal, 2014
Three-dimensional (3D) backside reflector, compared with flat reflectors, can improve the probability of finding the escape cone for reflecting lights and thus enhance the light-extraction efficiency (LEE) for GaN-based light-emitting diode (LED) chips ...
Huamao Huang, Jinyong Hu, Hong Wang
doaj   +1 more source

125 Gbit/s discretely tunable InP-on-silicon filtered feedback laser with sub-nanosecond wavelength switching times [PDF]

, 2018
A heterogeneously integrated InP-on-silicon fast tunable filtered feedback laser is demonstrated. The laser device consists of a main Fabry-Pérot cavity connected to an integrated arrayed waveguide grating of which the outputs form external cavities in ...
, Dhoore, Sören, Morthier, Geert, Roelkens, Günther   +3 more
core   +2 more sources

Distributed Bragg Reflector Based on Plasmonic Ag: Plasma Polymer Nanocomposites

Advanced Optical Materials, Volume 14, Issue 8, 23 February 2026.
This paper presents a comprehensive approach for the optical design and validation of silver nanocomposite‐based Distributed Bragg Reflectors (DBRs). It describes deriving material properties (n, k) and using them to predict the performance of the deposited optical stack, as well as to characterize imperfections in the DBR deposition, or even to ...
Zdeněk Krtouš, Pavel Pleskunov, Tereza Košutová, Milan Dopita, Ondřej Kylián, Bill Baloukas, Ludvík Martinu, Jaroslav Kousal   +7 more
wiley   +1 more source