Results 101 to 110 of about 52,255 (282)

Modulating Persistent Photoconductivity through Barrier Engineering for High‐performance and Multifunctional Two‐dimensional Optoelectronic Devices

Advanced Science, EarlyView.
Schottky barrier engineering using van der Waals contacts enables effective modulation of persistent photoconductivity (PPC) in optoelectronic devices. A high persistent photoconductivity gain (PPCG) (307.6%) is achieved in a high‐barrier Au/MoS2 junction, supporting photomemory and optoelectronic synaptic behaviors. A low PPCG (4.72%) is achieved in a
Panpan Huo, Xinhao Zhang, Xiangyong Cui, Yeming Wang, Dong Zhou, Baoyuan Man, Il Jeon, Won Jong Yoo, Cheng Yang   +8 more
wiley   +1 more source

All Polarization Maintaining Brillouin Erbium-Doped Fiber Laser With Sub-kHz Linewidth Using Saturated Absorber and Self-Injection Feedback

IEEE Photonics Journal
A narrow-linewidth all-polarization-maintaining (PM) Brillouin erbium-doped fiber laser (BEFL) is proposed and demonstrated experimentally, which employs erbium-doped fiber (EDF) acting as both the linear gain and the Brillouin gain medium.
Junsen Yang, Zhengkang Wang, Jianming Shang, Shiyou Xiao, Zhixue Li, Bin Luo, Tianwei Jiang, Song Yu   +7 more
doaj   +1 more source

High-Power Narrow-Linewidth Q-Switched TEM₀₀ Mode 355-nm Laser

IEEE Photonics Journal, 2018
We report on a high pulse energy, narrow-linewidth, Q-switched ultraviolet (UV) laser at 355 nm from the third harmonic generation (THG) of a 1064-nm Nd:YAG master oscillator power amplifier (MOPA) system.
Yujiao Li, Wei Tu, Baoshang Wang, Nan Zong, Feng Yang, Fengfeng Zhang, Shenjin Zhang, Zhimin Wang, Qinjun Peng, Dafu Cui, Zuyan Xu   +10 more
doaj   +1 more source

Large amplitude microwave emission and reduced nonlinear phase noise in Co2Fe(Ge0.5Ga0.5) Heusler alloy based pseudo spin valve nanopillars

, 2011
We have studied microwave emission from a current-perpendicular-to-plane pseudo spin valve nanopillars with Heusler alloy Co2Fe(Ga0.5Ge0.5) electrodes.
Bazaliy Y. B., Jaivardhan Sinha, Kazuhiro Hono, Maksim Drapeko, Masamitsu Hayashi, Seiji Mitani, Tomohiro Taniguchi, Yukiko K. Takahashi   +7 more
core   +1 more source

Scanning Tunnelling Microscopy Study of Spin Interactions in Transition‐Metal Phthalocyanine Adsorbates: Mechanisms, Signatures, and Control Strategies

Advanced Science, EarlyView.
Transition‐metal phthalocyanine (TMPc) molecules serve as model systems for probing the spin interactions. This review summarizes recent scanning tunnelling microscopy advances on the spin‐related phenomena in TMPc adsorbates, including Kondo effect, spin excitations, and Yu–Shiba–Rusinov states, emphasizing the mechanisms and control strategies, and ...
Fudi Zhou, Can Zhang, Zhaoteng Dong, Mengya Ren, Lili Zhou, Yu Zhang, Yeliang Wang   +6 more
wiley   +1 more source

Mode-hop-free wavelength-tunable semiconductor lasers covering the S+C+L band via external-cavity optical feedback

Frontiers in Physics
A wide mode-hop-free and narrow-linewidth tunable laser diode source employing a Littman-Metcalf configuration with a diffraction grating is developed. We conducted a series of experiments to evaluate the tuning characteristics and spectral linewidth of ...
Liwen Sheng, Liwen Sheng, Liwen Sheng, Zhiming Liu, Jianjun Wang, Lei Liu, Bingqi Yin, Zhihui Zhang, Shuai Zhou, Lin Huang, Lin Huang, Lin Huang   +11 more
doaj   +1 more source

Three-dimensional laser cooling at the Doppler limit

, 2014
Many predictions of Doppler cooling theory of two-level atoms have never been verified in a three-dimensional geometry, including the celebrated minimum achievable temperature $\hbar \Gamma/2 k_B$, where $\Gamma$ is the transition linewidth.
Aspect, Alain, Audo, Kevin, Bouton, Quentin, Chang, Rockson, Clément, David, Fang, Yami, Hoendervanger, Lynn, Klafka, Tobias, Westbrook, Christoph I   +8 more
core   +4 more sources

Surface‐Interaction‐Driven Polarity Switching in II–V Cd3P2 Colloidal Quantum Dots for Infrared Photodiodes

Advanced Science, EarlyView.
. ABSTRACT Colloidal quantum dots (CQDs) based on II–V semiconductors offer attractive optical absorption and carrier transport properties for infrared optoelectronics, yet their device‐relevant electronic behavior remains poorly understood. In particular, Cd3P2 CQDs have been constrained by limited control over nanocrystal growth and carrier polarity.
Ha‐Chi V. Tran, Doeun Shim, Youngsang Park, Mahnmin Choi, Hyeonjun Jeong, Guillaume Bonifas, Liyan Ouyang, Celine Nayral, Fabien Delpech, Joongoo Kang, Sohee Jeong   +10 more
wiley   +1 more source

Reconfigurable Spoof Plasmonic Skyrmion Electronics for Deformation‐Invariant Multimode Sensing

Advanced Science, EarlyView.
A flexible multimode sensor based on capacitively loaded spoof plasmonic skyrmions enables deformation‐invariant dielectric sensing with ultra‐compact size and high Q‐factor. Near‐equidistant resonances remain stable under shape change and bending, while capacitor loading improves bending robustness and multimode sensitivity, highlighting strong ...
Zengxiang Wang, Xiangzheng Kong, Xiaojun Huang, Ying Tian, Wang Yao, Xia Xiao, Zhuo Li, Yu Luo   +7 more
wiley   +1 more source

Recent Advances in Tunable External Cavity Diode Lasers

Applied Sciences
A narrow linewidth tunable laser source is a critical component in various fields, including laser radar, quantum information, coherent communication, and precise measurement. Tunable external cavity diode lasers (ECDLs) demonstrate excellent performance,
Yan Wang, Yue Song
doaj   +1 more source