Results 61 to 70 of about 1,396,787 (284)

From the Discovery of the Giant Magnetocaloric Effect to the Development of High‐Power‐Density Systems

Advanced Materials Technologies, EarlyView.
The article overviews past and current efforts on caloric materials and systems, highlighting the contributions of Ames National Laboratory to the field. Solid‐state caloric heat pumping is an innovative method that can be implemented in a wide range of cooling and heating applications.
Agata Czernuszewicz, Yaroslav Mudryk, Jun Cui, Lucas Griffith, Duane D. Johnson, Julie Slaughter   +5 more
wiley   +1 more source

The Evolution of Aerosol Jet Printing, A Review: Enhancing Material Versatility and Improvements for Next‐Generation Applications

Advanced Materials Technologies, EarlyView.
Aerosol Jet Printing (AJP) has emerged as a versatile additive manufacturing technique for high‐resolution, conformal, and multi‐material printing. This review highlights advances in printable materials, substrate compatibility, post‐processing, characterization, and process innovations, while critically discussing current challenges and future ...
Chandrachur Chatterjee, Rocco Lupoi, Michael J. Gibbons   +2 more
wiley   +1 more source

On-chip wide tuning of high-power quantum cascade laser based on a vertical-integrated heater

APL Photonics
Mid-infrared high-peak power quantum cascade lasers are highly useful in many applications such as gas sensing and free-space communication. However, practical application scenarios place further demands on the wavelength tunability and integration of ...
Binru Zhou, Shichen Zhang, Yu Ma, Zejun Ma, Haiyun Dong, Rusong Li, Yixuan Zhu, Ning Zhuo, Shenqiang Zhai, Jinchuan Zhang, Fengqi Liu, Quanyong Lu   +11 more
doaj   +1 more source

Mid-Infrared Quantum-Dot Quantum Cascade Laser: A Theoretical Feasibility Study

Photonics, 2016
In the framework of a microscopic model for intersubband gain from electrically pumped quantum-dot structures we investigate electrically pumped quantum-dots as active material for a mid-infrared quantum cascade laser.
Stephan Michael, Weng W. Chow, Hans Christian Schneider   +2 more
doaj   +1 more source

On‐Chip Photonic Neural Network Architectures

Advanced Optical Materials, EarlyView.
This review presents a comprehensive overview of on‐chip photonic neural network architectures, covering key photonic building blocks, representative network types, and emerging applications. Recent advances, implementation challenges, and future directions are examined, highlighting the potential of integrated photonics to enable ultrafast, energy ...
Seokjin Hong, Berkay Neseli, Seungyeon Cho, Seungsoo Lee, Yeonjun Kim, Seungyoon Choi, Hyo‐Hoon Park, Hamza Kurt   +7 more
wiley   +1 more source

Photonic crystals as functional mirrors for semiconductor lasers [PDF]

, 2008
In recent years, interest has grown in the research fields of semiconductor lasers and photonic crystals. This thesis looks at integrating photonic crystals into existing semiconductor laser technology to act as functional laser mirrors.
Moore, Stephen A.
core   +2 more sources

Nanomaterial‐Incorporated Nonlinear Optical Waveguides Explored With All‐Fiber Multiphoton Polymerization

Advanced Optical Materials, EarlyView.
Nonlinear waveguides are fabricated via an all‐fiber‐based multiphoton polymerization approach incorporating upconversion nanoparticles (UCNPs), which enable both multiphoton absorption at telecommunication wavelengths and nonlinear saturable absorption operation.
Bowon Ryu, Seungyong Shin, Myungjin Kang, Young Joon Moon, Jihoon Kyhm, Hyowon Moon, Ho Seong Jang, Yong‐Won Song   +7 more
wiley   +1 more source

Quantum Transport Simulation of High-Power 4.6-μm Quantum Cascade Lasers

Photonics, 2016
We present a quantum transport simulation of a 4.6- μ m quantum cascade laser (QCL) operating at high power near room temperature. The simulation is based on a rigorous density-matrix-based formalism, in which the evolution of the single-electron ...
Olafur Jonasson, Song Mei, Farhad Karimi, Jeremy Kirch, Dan Botez, Luke Mawst, Irena Knezevic   +6 more
doaj   +1 more source

Spatial hole burning in actively mode-locked quantum cascade lasers

, 2009
A theoretical study of active mode-locking in quantum cascade lasers including spatial hole-burning is presented. It is found that spatial hole-burning reduces the pulse duration at the expense of slight pulse instability and strongly structured pulse ...
A. Belyanin, Capasso, Federico, L. Diehl, Diehl, L., Belyanin, A., C. Jirauschek, Gkortsas, Vasileios-Marios, Franz X. Kärtner, Jirauschek, C., F. Capasso, Belkin, M. A., M. A. Belkin, L. Kuznetsova, C. Wang, Wang, C., Kaertner, Franz X., Gordon, Ariel, A. Gordon, Kuznetsova, Lyuba, Vasileios-Marios Gkortsas   +19 more
core   +1 more source

Seven‐Fold Compression of Mid‐Infrared Pulses Using a Series of Titanium Dioxide Plates

Advanced Optical Materials, EarlyView.
Here, a sequence of three titanium dioxide plates is used to compress a mid‐infrared pulse from 103.9 femtoseconds to 14.1 femtoseconds (about two optical cycles) without the use of external dispersion compensation. The approach maintains high efficiency and produces pulses with a stable carrier‐envelope phase, providing a compact platform for ...
André M. Côté, Dillon Lim, Nicholas Karpowicz, Gary W. Leach, Shawn Sederberg   +4 more
wiley   +1 more source