Results 81 to 90 of about 173,725 (252)

Ultra-low NA step-index large mode area Yb-doped fiber with a germanium doped cladding for high power pulse amplification.

Optics Letters, 2020
High concentration rare earth doped, large mode area (LMA) step-index fibers, which feature a very high cladding absorption per unit length at the pump wavelength, high efficiency, and excellent beam quality, are ideal for high power pulsed fiber lasers ...
R. Sidharthan, D. Lin, Kang Jie Lim, Huizi Li, Serene Huiting Lim, Chen Jian Chang, Yue Men Seng, Song Liang Chua, Yongmin Jung, D. Richardson, S. Yoo   +10 more
semanticscholar   +1 more source

Mode-adaptive control of a kilowatt-level large-mode-area fiber laser based on 5×1 photonic lantern

High Power Laser Science and Engineering
This study presents high-power mode-selective operation in a large-mode-area (LMA) fiber laser. A spatial mode-adaptive control system incorporating a 5×1 photonic lantern was employed to facilitate mode conversion between the LP01 and LP11 modes.
Wenguang Liu, Yanyang Hu, Hanwei Zhang, Lianchuang Ding, Pengfei Liu, Baozhu Yan, Jiangbin Zhang, Qiong Zhou, Zongfu Jiang   +8 more
doaj   +1 more source

Microstructured cladding elements to enhance performance and flexibility of large mode area leakage channel fibers

Large mode area fibers are imperative for scaling up the average power of fiber lasers. Single-mode behavior and low FM loss are the crucial functionalities for these fibers.
Baskiotis, C., Dasgupta, S., Richardson, D.J., Hayes, J.R.   +3 more
core   +1 more source

Thermally induced mode loss evolution in the coiled ytterbium doped large mode area fiber.

Optics Express, 2017
We propose a model to calculate the thermally induced mode loss evolution in the coiled ytterbium doped large mode area (LMA) fiber. The mode loss evolution in the coiled conventional step index LMA 20/400 fiber is investigated.
Lingchao Kong, Jin-yong Leng, P. Zhou, Zong-fu Jiang   +3 more
semanticscholar   +1 more source

Halide gas-phase-doping technique to fabricate large-mode-area laser fiber

, 2016
By using rare;earth;halide gas;phase;doping technique, we fabricated Yb;doped large;mode;area fiber preform. Yb concentration is of ∼9500ppmw in core area and 951W@1064nm laser output was obtained with a slope efficiency of 83.3%.
Zhan, Huan, Wang, Jianjun, Gao, Cong, Peng, Kun, Wang, Zhen, Ni, Li, Lin, Aoxiang, Jing, Feng, Wang, Yuying, Lin, Aoxiang (aoxiang.research@gmail.com)   +9 more
core   +1 more source

High-power chirped-pulse all-fiber amplification system based on large-mode-area fiber gratings [PDF]

, 1999
The fabrication of large mode-area single mode fibres are crucial to developing high power all-fibre lasers and amplifiers. We report the amplification of picosecond pulses to microjoule energy levels and pulse peak powers in excess of 500kW in an all ...
Taverner, D., Caplen, J.E., Dong, L., Ibsen, M., Broderick, N.G.R., Richardson, D.J.   +5 more
core   +1 more source

Soliton Mode-Locked Large-Mode-Area Tm-Doped Fiber Oscillator

, 2020
| openaire: EC/H2020/820423/EU//S2QUIPWe report a passively mode-locked fiber oscillator based on thulium-doped large-mode-area (LMA) fiber. Reliably mode-locking soliton operation can be readily achieved after the suppression of the higher-order modes ...
Ruan, S, Sun, Zhipei, Zhang, Hui, Yan, Peiguang, Wei, Rongling, Zheng, Zhijian, Zhu, Zexiu, Ruan, Shuangchen, ,, Hasan, T, Wang, J, Hasan, Tawfique, Wei, R, Wang, Mengmeng, Wang, M, Wang, Jinzhang, Zhu, Z, Zhang, H, Zheng, Z, Yan, P, Sun, Z   +20 more
core   +1 more source

An All-Solid Dispersion-Compensating Photonic Crystal Fiber Based on Mode Coupling Mechanism in Dual-Concentric Core

International Journal of Optics, 2020
An all-solid dispersion-compensating photonic crystal fiber based on mode coupling mechanism in dual-concentric core has been proposed. The mode coupling characteristics, dispersion, confinement loss of the fiber, and the influence on dispersion of some ...
Zhaolun Liu, Chunlan Zhang, Yuwei Qu
doaj   +1 more source

Anticrossing and Mode Coupling in Bent All-Glass Leakage Channel Microstructured Optical Fibers with Large Mode Area

Photonics
This paper presents the results of a detailed theoretical study of the bending properties of original all-glass leakage channel microstructured optical fibers (LC MOFs) over a bending radius range from 3 cm to 11 cm.
Alexander N. Denisov, Vladislav V. Dvoyrin, Sergey L. Semjonov   +2 more
doaj   +1 more source

Large Pitch Photonic Quasi-Crystal Fiber Amplifier

IEEE Photonics Journal, 2012
We design an ytterbium-doped large pitch photonic quasi-crystal fiber (PQF) for amplifying high-energy ultrashort laser pulses. The proposed fiber exhibits unique properties such as very large mode area (4660 μm2), less attenuation (0.42 dB/km ...
S. Sivabalan, J. P. Raina
doaj   +1 more source