VSe2 nanosheets for ultrafast fiber lasers

2020 ◽  
Vol 8 (3) ◽  
pp. 1104-1109 ◽  
Author(s):  
Lu Li ◽  
Lihui Pang ◽  
Qiyi Zhao ◽  
Wenjun Liu ◽  
Yulong Su
Keyword(s):  
Fiber Lasers ◽  
Laser Pulses ◽  
Large Energy ◽  
Energy Mode ◽  
Mode Locked Laser ◽  
First Time

In this work, we investigate VSe2 for generating femtosecond and large energy mode-locked laser pulses for the first time.

scholarly journals Laser-induced thermal grating spectroscopy based on femtosecond laser multi-photon absorption

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Maria Ruchkina ◽  
Dina Hot ◽  
Pengji Ding ◽  
Ali Hosseinnia ◽  
Per-Erik Bengtsson ◽  
...  
Keyword(s):  
Continuous Wave ◽  
Laser Pulses ◽  
Photon Absorption ◽  
Gas Flows ◽  
Single Shot ◽  
Photon Excitation ◽  
Fs Laser ◽  
Thermal Grating ◽  
Grating Spectroscopy ◽  
First Time

AbstractLaser-induced grating spectroscopy (LIGS) is for the first time explored in a configuration based on the crossing of two focused femtosecond (fs) laser pulses (800-nm wavelength) and a focused continuous-wave (cw) laser beam (532-nm wavelength). A thermal grating was formed by multi-photon absorption of the fs-laser pulses by $$\hbox {N}_{{2}}$$ N 2 with a pulse energy around 700 $$\upmu $$ μ J ($$\sim $$ ∼ 45 TW/$$\hbox {cm}^{2}$$ cm 2 ). The feasibility of this LIGS configuration was investigated for thermometry in heated nitrogen gas flows. The temperature was varied from room temperature up to 750 K, producing strong single-shot LIGS signals. A model based on the solution of the linearized hydrodynamic equations was used to extract temperature information from single-shot experimental data, and the results show excellent agreement with the thermocouple measurements. Furthermore, the fluorescence produced by the fs-laser pulses was investigated. This study indicates an 8-photon absorption pathway for $$\hbox {N}_{{2}}$$ N 2 in order to reach the $$\hbox {B}^{3}\Pi _{g}$$ B 3 Π g state from the ground state, and 8 + 5 photon excitation to reach the $$\hbox {B}^{2}\Sigma _{u}^{+}$$ B 2 Σ u + state of the $$\hbox {N}_{2}^{+}$$ N 2 + ion. At pulse energies higher than 1 mJ, the LIGS signal was disturbed due to the generation of plasma. Additionally, measurements in argon gas and air were performed, where the LIGS signal for argon shows lower intensity compared to air and $$\hbox {N}_{{2}}$$ N 2 .

scholarly journals Tuneable Femtosecond Fiber Lasers – Ultra-short laser pulses from green to IR

2005 ◽  
Vol 2 (2) ◽  
pp. 72-74
Author(s):  
Jan Posthumus ◽  
Armin Zach ◽  
Florian Tauser
Keyword(s):  
Fiber Lasers ◽  
Laser Pulses ◽  
Femtosecond Fiber Lasers ◽  
Short Laser Pulses

Spectral filtering for high-energy mode-locking in normal dispersion fiber lasers

2008 ◽  
Vol 25 (10) ◽  
pp. 1763 ◽  
Author(s):  
Brandon G. Bale ◽  
J. Nathan Kutz ◽  
Andy Chong ◽  
William H. Renninger ◽  
Frank W. Wise
Keyword(s):  
Fiber Lasers ◽  
High Energy ◽  
Mode Locking ◽  
Spectral Filtering ◽  
Normal Dispersion ◽  
Energy Mode

Green/red pulsed vortex-beam oscillations in all-fiber lasers with visible-resonance gold nanorods

Nanoscale ◽  
2019 ◽  
Vol 11 (34) ◽  
pp. 15991-16000 ◽  
Author(s):  
Jinhai Zou ◽  
Zhe Kang ◽  
Rui Wang ◽  
Hongjian Wang ◽  
Jiaxing Liu ◽  
...  
Keyword(s):  
Solid State ◽  
Gold Nanorods ◽  
Fiber Lasers ◽  
Vortex Beam ◽  
Sted Microscopy ◽  
Visible Wavelength ◽  
Mode Division Multiplexing ◽  
First Time

We demonstrate visible-wavelength all-fiber pulsed vortex lasers for the first time that may serve as attractive alternatives to solid-state vortex lasers for a variety of applications, such as visible mode-division multiplexing and STED microscopy.

Shape of passively mode-locked laser pulses

1975 ◽  
Vol 15 (1) ◽  
pp. 29-31 ◽  
Author(s):  
H.A. Haus ◽  
C.V. Shank ◽  
E.P. Ippen
Keyword(s):  
Laser Pulses ◽  
Mode Locked Laser

scholarly journals Large energy mode locking of an erbium-doped fiber laser with atomic layer graphene

2009 ◽  
Vol 17 (20) ◽  
pp. 17630 ◽  
Author(s):  
H. Zhang ◽  
D. Y. Tang ◽  
L. M. Zhao ◽  
Q. L. Bao ◽  
K. P. Loh
Keyword(s):  
Fiber Laser ◽  
Atomic Layer ◽  
Mode Locking ◽  
Large Energy ◽  
Layer Graphene ◽  
Erbium Doped ◽  
Energy Mode

Selection of cw Mode-Locked Laser Pulses

1975 ◽  
Vol 14 (3) ◽  
pp. 643 ◽  
Author(s):  
V. J. Corcoran ◽  
R. W. McMillan ◽  
P. M. Rushworth
Keyword(s):  
Laser Pulses ◽  
Mode Locked Laser ◽  
Selection Of

Basis for Picosecond Structure in Mode‐Locked Laser Pulses

1970 ◽  
Vol 41 (11) ◽  
pp. 4562-4565 ◽  
Author(s):  
H. A. Pike ◽  
M. Hercher
Keyword(s):  
Laser Pulses ◽  
Mode Locked Laser

scholarly journals Large energy laser pulses with high repetition rate by graphene Q-switched solid-state laser

2011 ◽  
Vol 19 (10) ◽  
pp. 9950 ◽  
Author(s):  
Xian-lei Li ◽  
Jin-long Xu ◽  
Yong-zhong Wu ◽  
Jing-liang He ◽  
Xiao-peng Hao
Keyword(s):  
Solid State ◽  
Repetition Rate ◽  
Laser Pulses ◽  
Solid State Laser ◽  
High Repetition Rate ◽  
Large Energy ◽  
State Laser ◽  
High Repetition ◽  
Energy Laser
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