Results 101 to 110 of about 27,403 (301)

Interband Mid-IR Semiconductor Lasers

IEEE Photonics Journal, 2010
Significant advances in the room-temperature (RT) continuous-wave (CW) output power of both type-I quantum-well (QW) active-layer lasers and interband cascade lasers have been reported within the 3–4- $\mu\hbox{m}$ wavelength region in 2009 ...
L. J. Mawst
doaj   +1 more source

Powering Nanocrystal‐Based Heat Engines With Light‐Emitting Metasurfaces That Influence Their Temperature

Advanced Functional Materials, EarlyView.
Metasurfaces and other structured photonic environments can dramatically modify the absorption and/or light emission of semiconductors. However, the consequences of these changes on the temperature of the system are not well understood. The authors address this problem for colloidal nanocrystals and leverage their findings to convert light into ...
Hugo Kowalczyk, Yihao Yuan, Augustin Caillas, Amel Saidoun, Roméo Bonnet, Pascal Filloux, Emmanuel Lhuillier, Aloyse Degiron   +7 more
wiley   +1 more source

Pickering‐Engineered Microparticles for Magnetically Guided Motion and Light‐Triggered Catalysis

Advanced Functional Materials, EarlyView.
Magnetically responsive wax microparticles stabilized by hematite cubes through the Pickering emulsification strategy are developed, showing controlled size, motion, and light‐activated catalytic activity. Annealing under a magnetic field enhances their mobility and steering.
Chiara Ferlito, Ludovico Guercio, Giuseppe Cavallaro, Giuseppe Lazzara, Theodore Hueckel, Lorenzo Lisuzzo, Stefano Sacanna   +6 more
wiley   +1 more source

High-power, high-wall-plug-efficiency quantum cascade lasers with high-brightness in continuous wave operation at 3–300μm

Light: Science & Applications
Quantum cascade lasers (QCLs) are unipolar quantum devices based on inter-sub-band transitions. They break the electron-hole recombination mechanism in traditional semiconductor lasers, overcome the long-lasting bottleneck which is that the emission ...
Manijeh Razeghi, Yanbo Bai, Feihu Wang
doaj   +1 more source

Widely-Tunable Ring-Resonator Semiconductor Lasers

Applied Sciences, 2017
Chip-scale widely-tunable lasers are important for both communication and sensing applications. They have a number of advantages, such as size, weight, and cost compared to mechanically tuned counterparts.
Tin Komljenovic, Linjun Liang, Rui-Lin Chao, Jared Hulme, Sudharsanan Srinivasan, Michael Davenport, John E. Bowers   +6 more
doaj   +1 more source

MXene Wrapped Magnetic Mesocrystals for Durable Redox Catalytic Cancer Therapy and Responsive MRI

Advanced Functional Materials, EarlyView.
Conformal wrapping of ultrathin Ti3C2Tx MXene nanosheets on Fe3O4 mesocrystals creates topology‐stabilized Schottky junctions that direct photoinduced electron transfer under NIR irradiation. The unique architecture sustains Fenton catalysis, promotes continuous hydroxyl radical production, and provides photo‐responsive MRI contrast.
Min Jun Ko, Seongchan Kim, Jun‐Hyeok Han, Sanghee Lee, Minji Ahn, Hong En Fu, Young Jun Jang, Yoo Sang Jeon, Weiguo Li, Young Keun Kim, Dong‐Hyun Kim   +10 more
wiley   +1 more source

Monolithic Fabrication of InGaAs/GaAs/AlGaAs Multiple Wavelength Quantum Well Laser Diodes via Impurity-Free Vacancy Disordering Quantum Well Intermixing

IEEE Journal of the Electron Devices Society, 2017
InGaAs/GaAs/AlGaAs multiple wavelength quantum well (QW) semiconductor laser diodes (LDs) have been fabricated by impurity-free vacancy disordering (IFVD) QW intermixing (QWI) method.
Zhongliang Qiao, Xiaohong Tang, Xiang Li, Baoxue Bo, Xin Gao, Yi Qu, Chongyang Liu, Hong Wang   +7 more
doaj   +1 more source

Long wavelength VCSEL-by-VCSEL optical injection-Locking [PDF]

, 2009
VCSEL-by-VCSEL optical injection-locking to obtain high cut-off frequencies of 1.3 μm Vertical-Cavity Surface-Emitting Lasers (VCSELs) is demonstrated. A detailed physical explanation of the underlying mechanism is presented.
Sirbu, A., Iakovlev, Vladimir, Bacou, A., Rissons, A., Iakovlev, V., Bacou, Alexandre, Mollier, Jean-Claude, Kapon, Eli, Kapon, E., Hayat, A., Mollier, J.C., Rissons, Angélique, Sirbu, Alexei, Hayat, Ahmad   +13 more
core   +1 more source

Vorticity‐Driven µ‐Platelet Rotation and Selective Packing for Vertical Thermal–Electrical Interconnects

Advanced Functional Materials, EarlyView.
We introduce a capillary‐filtering‐based particle‐filling (CFPF) process that simultaneously forms vertical thermal pathways and electrical vias within µ‐pores. In situ microfluidic analysis reveals that capillary‐driven velocity gradients generate vorticity that governs µ‐platelet rotation and vertical alignment.
Yujin Mun, Sang Gil Lee, Un‐seong Baik, Taeyoon Kwon, Jungyeon Kim, Joo Hwan Shin, Chanho Jeong, Jae‐seung Shim, Yeji Kim, Hyein Jung, Jin‐Tae Kim, Tae‐il Kim   +11 more
wiley   +1 more source

Fundamentals and applications of spatial dissipative solitons in photonic devices : [Chapter 6]

, 2009
We review the properties of optical spatial dissipative solitons (SDS). These are stable, self‐localized optical excitations sitting on a uniform, or quasi‐uniform, background in a dissipative environment like a nonlinear optical cavity.
Firth, W.J., Ackemann, Thorsten, Oppo, G.L., WilliamJ. Firth, Firth, William J., Thorsten Ackemann, Gian‐Luca Oppo, Oppo, Gian-Luca, Ackemann, T.   +8 more
core   +1 more source