Results 51 to 60 of about 6,116 (319)

A 0.82 μm, 105 W diode-pumped thulium-doped all-silica-fiber laser

open access: yesHigh Power Laser Science and Engineering
An all-silica-fiber thulium-doped fiber laser emitting at 0.82 μm on the transition from 3H4 to the ground state 3H6 outputs 105 W continuous-wave power and 555 W quasi-continuous-wave instantaneous power with 0.96% duty cycle in 240 μs rectangular ...
Changshun Hou   +6 more
doaj   +1 more source

Simulation of Optical Fiber Amplifier Gain Using Equivalent Short Fibers

open access: yes, 2019
Electromagnetic wave propagation in optical fiber amplifiers obeys Maxwell equations. Using coupled mode theory, the full Maxwell system within an optical fiber amplifier is reduced to a simpler model.
Drake, Dow   +3 more
core   +1 more source

Wideband saturable absorption in few-layer molybdenum diselenide (MoSe₂) for Q-switching Yb-, Er- and Tm-doped fiber lasers. [PDF]

open access: yes, 2015
We fabricate a free-standing molybdenum diselenide (MoSe2) saturable absorber by embedding liquid-phase exfoliated few-layer MoSe2 flakes into a polymer film.
Hasan, T.   +6 more
core   +4 more sources

Fiber-Coupled Multiplexed Independent Ho:ZBLAN Waveguide Chip Lasers in a Single Substrate

open access: yesPhotonics, 2022
A readily configurable and scalable 2 µm laser source with multi-channel/wavelength fiber output could be advantageous to 2 µm applications such as spectral-beam combination or fiber communications.
Dale E. Otten   +4 more
doaj   +1 more source

Surface Tension Measurement of Ti‐6Al‐4V by Falling Droplet Method in Oxygen‐Free Atmosphere

open access: yesAdvanced Engineering Materials, EarlyView.
In this article, the temperature‐dependent surface tension of free falling, oscillating Ti‐6Al‐4V droplets is investigated in both argon and monosilane doped, oxygen‐free atmosphere. Droplet temperature and oscillation are captured with one single high‐speed camera, and the surface tension is calculated with Rayleigh's formula.
Johannes May   +9 more
wiley   +1 more source

Ytterbium-Codoping in Thulium Doped Silica Fiber

open access: yesPIERS Online, 2005
A novel ytterbium-thulium codoping scheme is presented taking advantage of the fact that ytterbium codoping in thulium could facilitate population inversion between the relevant energy levels, through a cross energy transfer process between Tm3+ and Yb3+.
Chang, Jun   +2 more
openaire   +4 more sources

Theoretical Characterization of the Ultra-Broadband Gain Spectra at $\sim$1600–2100 nm From Thulium-Doped Fiber Amplifiers

open access: yesIEEE Photonics Journal, 2016
In this paper, we present the theoretical modeling and characterization of the gain spectra at $\sim$1600–2100 nm from thulium-doped fiber amplifiers (TDFAs) for the first time.
Jianlong Yang   +3 more
doaj   +1 more source

Passively Modelocked All-PM Thulium-Doped Fiber Laser at 2.07 μm

open access: yesIEEE Photonics Journal, 2022
Here we present a self-started passively mode-locked thulium-doped fiber laser with in-band pumping at 1561 nm that fully retains polarization and emits beyond 2 μm.
Christian Cuadrado-Laborde   +3 more
doaj   +1 more source

Understanding and Optimizing Li Substitution in P2‐Type Sodium Layered Oxides for Sodium‐Ion Batteries

open access: yesAdvanced Functional Materials, EarlyView.
This work explores Li‐substituted P2 layered oxides for Na‐ion batteries by crystallographic and electrochemical studies. The effect of lithium on superstructure orderings, on phase transitions during synthesis and electrochemical cycling and on the interplay of O‐ versus TM‐redox is revealed via various advanced techniques, including semi‐simultaneous 
Mingfeng Xu   +5 more
wiley   +1 more source

Ultrafast thulium-doped fiber laser mode-locked by antimonides

open access: yesOptics Express, 2021
We report, for the first time, the nonlinear absorption at the 2 µm waveband of three Sb-related materials including two Sb compounds, GaSb and InSb, and one Sb alloy, Ge8Sb92. These saturable absorbers (SAs) were coated on tapered single mode fibers by the magnetron-sputtering deposition method.
Hou Shaodong   +7 more
openaire   +2 more sources

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