Results 51 to 60 of about 7,835,761 (171)

A narrow linewidth tunable single longitudinal mode Ga-EDF fiber laser

, 2018
A tunable ring cavity single longitudinal mode (SLM) fiber laser incorporating Gallium-Erbium co-doped fiber (Ga-EDF) gain medium and several mode filtration techniques is demonstrated. With Ga-EDF, high emission power was accorded in short fiber length,
Abu Bakar, M. H., Mansoor, Amilia, Muhd-Yasin, S. Z., M.I. Zulkifli, A.A. Latif, H.A. Abdul-Rashid, A. Mansoor, N.H. Mohamed Halip, Abdul Rashid, Hairul Azhar, M.H. Abu Bakar, Zulkifli, M. I., S.Z. Muhd-Yasin, Omar, N. Y. M., Mat-Sharif, K. A., M.A. Mahdi, N.Y.M Omar, K.A. Mat-Sharif, Mohamed Halip, N. H., Latif, A. A., Mahdi, M. A.   +19 more
core   +1 more source

Febrile status epilepticus and epileptogenesis: The FEBSTAT study

Epilepsia Open, EarlyView.
Abstract The multicenter FEBSTAT study (Consequences of Prolonged Febrile Seizures in Childhood: https://grantome.com/grant/NIH/R37‐NS043209‐12; PI S. Shinnar) examined the outcome of febrile status epilepticus (FSE) in over 200 prospectively enrolled infants, with many followed for 10 years after FSE.
Darrell V. Lewis, Douglas R. Nordli Jr., Douglas R. Nordli III, Shlomo Shinnar, Stephen Chan, Jacqueline A. Bello, L. Matthew Frank, James Voyvodic, William Gallentine, Syndi Seinfeld, Yoshimi Sogawa, Erica Weiss, David Masur, Yuan Xu, Solomon L. Moshé   +14 more
wiley   +1 more source

Tunable and Switchable Dual-Wavelength SLM Narrow-Linewidth Fiber Laser with a PMFBG-FP Filter Cascaded by Multi-Ring Cavity

Photonics, 2022
A single longitudinal mode (SLM) dual-wavelength switchable erbium-doped fiber laser (DW-EDFL) based on polarization-maintaining fiber Bragg grating Fabry–Perot cavity (PMFBG-FP) cascaded multiple sub-ring cavities (MSCs) is proposed.
Mingquan Gao, Bin Yin, Yanzhi Lv, Guofeng Sang, Benran Hou, Haisu Li, Muguang Wang, Songhua Wu   +7 more
doaj   +1 more source

Controlling the Center of Mass Motion of Levitated Particles Using Structured Wavefronts

Laser &Photonics Reviews, EarlyView.
Optically levitated particles have great potential for quantum‐enhanced sensing. Precise control of the trapping beam is crucial to improve the stability and confinement of these systems. Here, we study how structured wavefronts can be used to control the center‐of‐mass motion of levitated particles, enhancing trap stiffness and enabling stable ...
Shah Jee Rahman, Quimey Pears Stefano, Angel Cifuentes, Jason Francis, Iker Gómez‐Viloria, Ruben Pellicer‐Guridi, Miguel Varga, Gabriel Molina‐Terriza   +7 more
wiley   +1 more source

Diffraction‐Free Natural Optical Skyrmions and Their Subwavelength Confinement Around Vortices

Laser &Photonics Reviews, EarlyView.
ABSTRACT Diffraction causes waves to spread out as they propagate freely. The tighter the lateral confinement, the faster the spreading. Past research on how to suppress diffraction has been based on wave engineering and has led so far to idealized waves that, in real settings, eventually diffract.
Nilo Mata‐Cervera, Deepak K. Sharma, Ramon Paniagua‐Dominguez, Yijie Shen, Miguel A. Porras   +4 more
wiley   +1 more source

Dual-cavity feedback assisted DFB narrow linewidth laser

Scientific Reports, 2017
Single longitudinal mode (SLM) distributed feedback (DFB) lasers with a linewidth lower than a few kHz find applications in many coherent detection systems.
Shihong Huang, Tao Zhu, Guolu Yin, Tianyi Lan, Fuhui Li, Ligang Huang, Min Liu   +6 more
doaj   +1 more source

Multiwavelength Single-Longitudinal-Mode Brillouin–Erbium Fiber Laser Sensor for Temperature Measurements With Ultrahigh Resolution

IEEE Photonics Journal, 2015
A multiwavelength single-longitudinal-mode (SLM) Brillouin-erbium fiber laser sensor with ultrahigh resolution is proposed and investigated experimentally. The one short common cavity with 50 m of single mode fiber (SMF) as the fiber under test and 100 m
Yi Liu, Mingjiang Zhang, Peng Wang, Lan Li, Yuncai Wang, Xiaoyi Bao   +5 more
doaj   +1 more source

A Single-Mode Erbium Fiber Laser With Flat Power Output and Wide Wavelength Tunability

IEEE Photonics Journal, 2020
In this research, we present and study an erbium fiber laser with triple-fiber-ring (TFR) scheme for continuous-wave (CW) wavelength-selection. The designed TFR not only can achieve single-longitudinal-mode (SLM) oscillation, but also can spread the ...
Chien-Hung Yeh, Wei-Yao You, Jhao-Ren Chen, Wen-Piao Lin, Chi-Wai Chow, Jing-Heng Chen   +5 more
doaj   +1 more source

Generating Helical Polymorphic Beams Using Dielectric Metasurfaces

Laser &Photonics Reviews, EarlyView.
Helix‐shaped polymorphic beams are optical fields whose intensity maxima spiral around the propagation axis, enabling particle manipulation through attractive or repulsive forces. Traditionally requiring expensive spatial light modulators, metasurfaces now provide a compact, cost‐effective alternative. This work demonstrates general helical polymorphic
Maryam Setareh, Yang Xu, Jose A. Rodrigo, Kenneth B. Crozier   +3 more
wiley   +1 more source

Dual‐Metasurface‐Integrated Fiber Array for Bidirectional Cylindrical‐Vector‐Beam Multiplexed Communication Using Off‐Axis Spatial Manipulation

Laser &Photonics Reviews, EarlyView.
A dual‐layer metasurface is integrated on a fiber‐array facet to realize compact, plug‐and‐play free‐space optical links with cylindrical vector beam (CVB) space‐division multiplexing. An optimized off‐axis collimation layer steers multiple channels, while a Dammann vortex layer performs polarization–topology conversion for bidirectional CVB (de ...
Xipeng Lu, Jinke Li, Jin Tae Kim, Shaoyan Li, Hongliang Li, Duk‐Yong Choi, Sang‐Shin Lee   +6 more
wiley   +1 more source