Results 81 to 90 of about 2,541,468 (293)

Theory of passive harmonic mode-locking using waveguide arrays

Optics Express, 2008
A comprehensive theoretical treatment is given of the phenomenon of harmonic mode-locking in a laser cavity mode-locked by the nonlinear mode-coupling behavior in a waveguide array. The theoretical model completely characterizes oscillatory instabilities and the transition from M to M+1 pulses as a function of increased gain.
J Nathan, Kutz, Björn, Sandstede
openaire   +2 more sources

Organoid Brain‐Machine‐Interface Devices for Central Nervous System Repair

Advanced Science, EarlyView.
We envision organoid brain‐machine‐interface (Organoid‐BMI) devices as new biohybrid bidirectional communication pathways to connect the human CNS and the external world for personalized CNS repair and regeneration. ABSTRACT Central nervous system (CNS) repair and regeneration suffer from tremendous clinical challenges due to current limitations in ...
Yantao Xing, Yang Yang, Zichen Hong, Chunhui Tian, Huiyu Chu, Susanne Clara Prokop, Hongwei Cai, Mingxia Gu, Jason Tchieu, Ken Mackie, Feng Guo   +10 more
wiley   +1 more source

Multiferroic‐Centric Materials and Systems Engineering for Battery Applications: An Insight Into Mechanisms, Strategies, and Characterizations

Advanced Science, EarlyView.
Multiferroic order parameters – polarization, magnetization, and ferroelastic strain – are positioned as dynamic design variables for batteries. Their mechanistic roles, practical tuning through fabrication and external fields, and ferroic‐resolved characterization routes are unified into a closed‐loop framework, revealing how coupled ferroic responses
Jiaqi Su, Yanda Zhu, Hao Peng, Manman Li, Xuzihan Zhang, Meixiao Wu, Siyuan Zhang, Yuhan Zeng, Jiwen Liao, Ming Luo, Hetaishan Huang, Yutong Wang, Sean Li, Wenxian Li   +13 more
wiley   +1 more source

Frequency and phase locking of laser cavity solitons [PDF]

, 2012
Self-localized states or dissipative solitons have the freedom of translation in systems with a homogeneous background. When compared to cavity solitons in coherently driven nonlinear optical systems, laser cavity solitons have the additional freedom of ...
Firth, William, Paulau, P.V., W. J. Firth, Firth, W. J., Y. Noblet, G. -L. Oppo, Oppo, Gian-Luca, Ackemann, T., McIntyre, C., T. Ackemann, Noblet, Y., Colet, Pere, Oppo, G-L, P. V. Paulau, Ackemann, Thorsten, P. Colet, Noblet, Yoann, McIntyre, Craig, Colet, P., C. McIntyre   +19 more
core   +2 more sources

Passive harmonic mode locking of soliton bunches in a fiber ring laser

, 2007
2007 Conference on Lasers and Electro-Optics - Pacific Rim, CLEO/PACIFIC RIM, Seoul, 26-31 August 2007We report experimental observation of passive harmonic mode locking of bunches of single-pulse solitons or twin-pulse solitons in an Erbium-doped fiber ...
Lu, C, Tam, HY, L. M. Zhao, Zhao, LM, Tang, DY, H. Y. Tam, C. Lu, Cheng, TH, D. Y. Tang, T. H. Cheng   +9 more
core   +1 more source

Rod Origami (RodOri) Spring Metamaterials for Tunable Vibration Control via Tailored Structural Instabilities

Advanced Science, EarlyView.
Rod Origami (RodOri) springs harness snap‐through instabilities of pre‐stressed curved rods with geometrically programmable buckling behavior. Integrating RodOri springs with distinct geometries yields multistable metamaterials that undergo stepwise reconfiguration via sequential snapping, achieving wide‐range tunability of stiffness and resonance ...
Jeseung Lee, Sophie Leanza, Ruike Renee Zhao   +2 more
wiley   +1 more source

Harmonic Order-Dependent Pulsewidth Shortening of a Passively Mode-Locked Fiber Laser With a Carbon Nanotube Saturable Absorber

IEEE Photonics Journal, 2012
A pumping-power-dependent high-order harmonic mode-locking erbium-doped fiber laser (HML-EDFL) with a single-wall carbon nanotube (SWCNT)-doped polyvinyl alcohol (PVA)-based saturable absorber is investigated.
Kuang-Nan Cheng, Yung-Hsiang Lin, Shinji Yamashita, Gong-Ru Lin   +3 more
doaj   +1 more source

High-frequency vector harmonic mode locking driven by acoustic resonances [PDF]

, 2019
A controllable passive harmonic mode locking (HML) in an erbium-doped fiber laser with a soliton pulse shaping using a single-wall carbon nanotube has been experimentally demonstrated. By increasing the pump power and adjusting the in-cavity polarization
Fotiadi, A., KBASHI, H, Korobko, D.A., Sergeyev, Sergey, Rozhin, A., Fotiadi, Andrei, Kbashi, H. J., Sergeyev, S. V., Korobko, D., AL-ARAIMI, M, Al-araimi, M.   +10 more
core   +1 more source

Aberrant GRP78 Phase Transition Sustains Endothelial IRE1α Signaling and Drives Blood–Brain Barrier Failure in Cerebral Amyloid Angiopathy

Advanced Science, EarlyView.
Vascular Aβ40 corrupts GRP78 phase behavior in brain endothelial cells, sustaining IRE1α–TRAF2–JNK signaling and driving apoptosis, tight junction loss, and blood–brain barrier failure in cerebral amyloid angiopathy. Pharmacological IRE1α inhibition restores vascular integrity, reduces leakage, and improves functional outcomes, revealing a targetable ...
Honglin Zheng, Qiang Li, Haiyang Luo, Yapei Yuan, Na Zhang, Yongting Lu, Suying Duan, Jieshi Zhong, Hang Zhang, Chenyang Liu, Yaochong Zhang, Wenzhuo Zhao, Yaxuan Song, Tuo Wang, Si Yan, Yapeng Li, Han Liu, Yuan Gao, Zongping Xia, Yuming Xu   +19 more
wiley   +1 more source

Double harmonic mode-locking in soliton fiber ring laser acquired through the resonant optoacoustic coupling

APL Photonics
Passive harmonic mode-locking of a soliton fiber laser locked to optoacoustic resonance (OAR) in the cavity fiber ensures high-frequency laser operation, high pulse stability, and low timing jitter. However, the pulse repetition rate (PRR) of such lasers
V. A. Ribenek, P. A. Itrin, D. A. Korobko, A. A. Fotiadi   +3 more
doaj   +1 more source