Results 21 to 30 of about 443,911 (328)

Enabling Efficient Mid‐Infrared Luminescence of Tm3+ in a Single Core–Shell Nanocrystal through Erbium Sublattice

open access: yesAdvanced Photonics Research, 2023
Mid‐infrared luminescence at around 1.8 μm has shown great potential in many frontier photonic fields. However, how to realize the 1.8 μm emission of Tm3+ with multiple pump wavelengths and in particular in nanosized hosts has remained a challenge so far.
Wang Sheng   +5 more
doaj   +1 more source

Broadband Metallic Carbon Nanotube Saturable Absorber for Ultrashort Pulse Generation in the 1500–2100 nm Spectral Range

open access: yesApplied Sciences, 2021
Herein, we report on the possibility of ultrashort laser pulse generation in the broadband spectral range using a saturable absorber based on free-standing metallic carbon nanotube thin film.
Maria Pawliszewska   +5 more
doaj   +1 more source

Generation of Arbitrary Frequency Chirps with a Fiber-Based Phase Modulator and Self-Injection-Locked Diode Laser [PDF]

open access: yes, 2006
We present a novel technique for producing pulses of laser light whose frequency is arbitrarily chirped. The output from a diode laser is sent through a fiber-optical delay line containing a fiber-based electro-optical phase modulator. Upon emerging from
Bakos   +26 more
core   +2 more sources

Gain-Managed Nonlinear Amplification in Erbium-Doped Fibers [PDF]

open access: yesEPJ Web of Conferences
This experiment aimed to characterize Gain-Managed Nonlinear amplification (GMN) in Erbium-doped fibers. This effect has so far been presented in Ytterbium-doped fibers and only simulated on Erbium-doped fibers.
Krakowski Mikołaj   +3 more
doaj   +1 more source

Unveiling the complexity of spatiotemporal soliton molecules in real time

open access: yesNature Communications, 2023
Observing the dynamics of 3D soliton molecules can hold great opportunities for unveiling the mechanism of molecular complexity and other nonlinear problems.
Yuankai Guo   +7 more
doaj   +1 more source

Ultra-broadband wavelength-swept Tm-doped fiber laser using wavelength-combined gain stages [PDF]

open access: yes, 2015
A wavelength-swept thulium-doped fiber laser system employing two parallel cavities with two different fiber gain stages is reported. The fiber gain stages were tailored to provide emission in complementary bands with external wavelength-dependent ...
Agger   +15 more
core   +1 more source

High-Power Fiber Laser Cutting for 50-mm-Thick Cement-Based Materials [PDF]

open access: yes, 2020
This experimental research highlights the applicability of laser cutting to cement-based materials using multimode fiber lasers. A 9 kW multimode fiber laser is used, and the experimental variables are the water-to-cement ratio, laser speed, and material
Lee, Dongkyoung   +2 more
core   +1 more source

Frequency locking of an erbium-doped fiber ring laser to an external fiber Fabry-Perot resonator [PDF]

open access: yes, 1993
An all-fiber, single-frequency, erbium-doped ring laser has been frequency locked to a resonance peak of an external fiber Fabry-Perot resonator by the Pound-Drever technique.
Dawson, Jay W.   +2 more
core   +1 more source

Switchable photothermal conversion efficiency for reprogrammable actuation

open access: yesnpj Flexible Electronics, 2023
Reprogrammable soft matter brings flexibility to soft robots so that they can display various motions, which is flourishing in soft robotics. However, the reprogramming of photoresponsive materials used in soft robots is time-consuming using existing ...
Yongcheng He   +7 more
doaj   +1 more source

Generation of tunable q-switched erbium-doped fiber laser based on graphite flakes saturable absorber [PDF]

open access: yes, 2020
Pulsed fiber laser has tremendous application in laser processing and laser sensor. The key element to produce a passively Q-switched fiber laser is by using a saturable absorber (SA).
Nik Mahmud, Nik Noor Haryatul Eleena
core  

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