Results 41 to 50 of about 5,291 (264)

Mutually coherent dual-comb source generated from a free-running linear fiber laser

Results in Physics, 2019
We demonstrate a simple scheme for mutually coherent dual-comb generation, in which two frequency combs are emitted from a linear polarization maintaining (PM) fiber laser. The employed master laser is simultaneously mode-locked along two cross-polarized
Zejiang Deng, Yang Liu, Cheng Ouyang, Wenchao Zhang, Chao Wang, Wenxue Li   +5 more
doaj   +1 more source

MAGTWIST: A Magnetically‐Driven Rotary Actuator Using a Traveling‐Wave With Integrated Stiffness Tunability

Advanced Functional Materials, EarlyView.
MAGTWIST: A compact magnetic rotary actuator, enabling smooth, stepless rotation, and on‐demand locking. Inspired by peristalsis, a soft polymer belt generates a traveling‐wave, enabling 270° rotation when heated. Cooling stiffens the belt, locking it in position and enabling it to withstand high loads.
Simon Frieler, Jean‐Paul P.M. de Vries, Sarthak Misra, Venkatasubramanian Kalpathy Venkiteswaran   +3 more
wiley   +1 more source

Ultrafast Fiber Lasers with Low-Dimensional Saturable Absorbers: Status and Prospects

Sensors, 2021
Wide-spectral saturable absorption (SA) in low-dimensional (LD) nanomaterials such as zero-, one-, and two-dimensional materials has been proven experimentally with outstanding results, including low saturation intensity, deep modulation depth, and fast ...
Pulak Chandra Debnath, Dong-Il Yeom
doaj   +1 more source

Gourd‐Inspired Design of Unit Cell with Multiple Gradients for Physiological‐Range Pressure Sensing

Advanced Functional Materials, EarlyView.
Gourd‐shaped micro‐dome arrays with coordinated modulus, conductivity, and geometric gradients co‐optimize sensitivity and linearity in piezoresistive tactile sensors. Under pressure, a solid upper dome embeds into a porous lower dome, triggering rapid contact‐area growth and series‐to‐parallel conduction, enabling unsaturated, intensity‐resolved ...
Jiayi Xu, Ming Lei, Yuanzhe Liang, Biao Qi, Ziyi Dai, Yong Zhao, Bingpu Zhou   +6 more
wiley   +1 more source

Nonlinear-Optical-Loop-Mirror-Based Mode-Locked Fiber Laser Sensor for Low-Temperature Measurement

Photonics
A temperature-sensing scheme is realized by a passively mode-locked Yb-doped fiber laser based on the nonlinear optical loop mirror (NOLM). The ambient temperature can be measured by detecting the pulse repetition frequency of the mode-locked fiber laser
Xian-An Dou, Linchan Li, Chang Liang, Haiping Xu, Qing Ye, Hui Kong, Jintian Bian, Lei Guo   +7 more
doaj   +1 more source

Optical vortex fiber laser based on modulation of transverse modes in two mode fiber

APL Photonics, 2019
Optical vortices, characterized by helical phase fronts, are usually generated outside the laser cavity using passive modulation methods. Here, we demonstrate an all-fiber laser to directly deliver mode-locked and continuous-wave vortex beams based on ...
Dong Mao, Mingkun Li, Zhiwen He, Xiaoqi Cui, Hua Lu, Wending Zhang, Han Zhang, Jianlin Zhao   +7 more
doaj   +1 more source

Automatic Generation of Noise-Like or Mode-Locked Pulses in an Ytterbium-Doped Fiber Laser by Using Two-Photon-Induced Current for Feedback

IEEE Photonics Journal, 2018
We present a simple, reliable, and fast method to automatically generate noise-like or mode-locked pulses in a fiber laser. To generate the targeted pulses, we employed two-photon-induced current from a photocell as the feedback signal to control a set ...
Hsiao-Hua Wu, Pin-Han Huang, Yuan-He Teng, Alexey Zaytsev, Osamu Wada, Ci-Ling Pan   +5 more
doaj   +1 more source

High-Order Mode Mode-Locked Fiber Laser Based on Few-Mode Saturable Absorber

IEEE Photonics Journal, 2021
We presented two kinds of high-order mode (HOM) mode-locked fiber lasers based on few-mode (FM) saturable absorbers for direct HOM oscillation. One is a ring fiber laser based on a carbon nanotube (CNT) saturable absorber (SA), in which the combination ...
Yi Huang, Si Lv, Linping Teng, Longtao Wang, Jiafeng Lu, Jiangtao Xu, Xianglong Zeng   +6 more
doaj   +1 more source

Mode-locked Nd-doped microstructured fiber laser

Optics Express, 2004
We demonstrate passive mode-locking of a microstructured fiber laser for the first time. The Nd-doped microstructured fiber exhibits a reduced dispersion at 1060 nm. A semiconductor saturable absorber mirror is used for passive mode-locking. Stable pulse formation with a pulse duration of about 26 ps and a pulse energy of 0.7 nJ is observed.
Mathias, Moenster, Peter, Glas, Günter, Steinmeyer, Rumen, Iliew   +3 more
openaire   +2 more sources

Indirect Band Edge and Chain‐Locked Linear Dichroism in the Quasi‐1D Van der Waals Antiferromagnet AgCrP2S6

Advanced Functional Materials, EarlyView.
AgCrP2S6 reveals a momentum‐indirect band edge (≈1.35 eV) and chain‐locked linear dichroism: the first direct transitions emerge at 1.6–1.8 eV for E||a. Resonant Raman and photoemission corroborate this assignment. In ACPS/graphene heterostructures, photocurrent turns on above ≈1.5 eV and follows the same polarization selection rules (anisotropy ≈0.53),
Oleksandr Volochanskyi, Sabrina Juergensen, Václav Valeš, Kumari Surbhi, Martin Mergl, Kseniia Mosina, Zdeněk Sofer, Jan Honolka, Patryk Kusch, Martin Kalbáč   +9 more
wiley   +1 more source