Self-focusing in high-power optical fibers

2007 ◽  
Author(s):  
G. Ronald Hadley ◽  
Arlee V. Smith
Keyword(s):  
Optical Fibers ◽  
High Power ◽  
Self Focusing

scholarly journals Review of self-focusing of high power lasers in large-mode-area optical fibers

2011 ◽  
Vol 276 ◽  
pp. 012010
Author(s):  
Chujun Zhao ◽  
Ying Li ◽  
Dajun Lei ◽  
Jianguo Wen ◽  
Hua Yang ◽  
...  
Keyword(s):  
Optical Fibers ◽  
High Power ◽  
High Power Lasers ◽  
Large Mode Area ◽  
Self Focusing ◽  
Mode Area

Recent Developments in Rare-Earths Doped Nano-Engineered Glass Based Optical Fibers for High Power Fiber Lasers

2016 ◽  
Vol 75 (4) ◽  
pp. 195-208 ◽  
Author(s):  
Mukul C. Paul ◽  
S. Bysakh ◽  
Shyamal Das ◽  
Anirban Dhar ◽  
M. Pal ◽  
...  
Keyword(s):  
Optical Fibers ◽  
Rare Earths ◽  
High Power ◽  
Fiber Lasers ◽  
Recent Developments

scholarly journals COHERENT PROPAGATION OF LASER BEAMS IN MCF FIBERS

2019 ◽  
Vol 47 (1) ◽  
pp. 21-23
Author(s):  
A.A. Balakin ◽  
S.A. Skobelev ◽  
A.V. Andrianov ◽  
E.A. Anashkina ◽  
A.G. Litvak
Keyword(s):  
Solid State ◽  
Optical Fibers ◽  
High Efficiency ◽  
Radiation Power ◽  
Experimental Studies ◽  
Pump Energy ◽  
Total Power ◽  
Beam Power ◽  
Self Focusing ◽  
Weakly Coupled

The successful development of fiber-optic technologies in recent decades has stimulated research on the replacement of components of solid-state laser systems with fiber components, which can drastically change the attractiveness of the corresponding applied developments. Yielding on the energy characteristics of solid-state systems, fiber lasers and nonlinear optical devices have high efficiency of conversion of pump energy to radiation energy associated with waveguide geometry, high quality of the spatial profile of the laser beam, as well as low cost, compactness, lack of alignment in work process. Note that the maximum achievable radiation power in a single fiber is limited primarily by the process of self-focusing, which leads to fiber damage. The use of a multi-core fiber (MCF), consisting of identical equidistant weakly coupled optical fibers, makes it possible to realize initially coherent propagation of laser radiation with a total power noticeably higher than it can be transmitted in a single optical fiber. However, as theoretical and experimental studies have shown, such systems have its own critical power (Balakin et al., 2016) whereby the self-focusing of the quasihomogeneous distribution of the wave field and its separation into a set of incoherent structures occurs. Therefore, we have considered a small-sized optical system of 2N identical weakly coupled optical fibers arranged in a ring (Balakin et. al., 2018). In such systems, it is possible to find stable distributions of intense wave beams, which allow coherent radiation transport over long distances. The total radiation power in the found distributions can significantly (up to 2N times) exceed the critical self-focusing power in continuous media. This manifests itself most clearly for the distribution of un ~ (-1)n with antiphase fields in neighboring waveguides, which is stable at an arbitrary wave beam power. Direct numerical simulation of a nonlinear wave equation confirms the stability of the field distributions found. The research was supported by the RAS Presidium Program «Nonlinear dynamics: fundamental problems and applications».

Study of Small-Scale Self-Focusing in High-Power Laser System

2012 ◽  
Vol 49 (1) ◽  
pp. 010002
Author(s):  
陈宝算 Chen Baosuan ◽  
张军勇 Zhang Junyong ◽  
张艳丽 Zhang Yanli ◽  
刘德安 Liu Dean ◽  
朱健强 Zhu Jianqiang
Keyword(s):  
High Power ◽  
Laser System ◽  
Small Scale ◽  
High Power Laser ◽  
Power Laser ◽  
Self Focusing ◽  
High Power Laser System

Small-scale self-focusing assessment using PSD Shannon entropy of a 3ω process in a high-power laser facility

2020 ◽  
Vol 151 ◽  
pp. 111410
Author(s):  
Xiaoxia Huang ◽  
Xuewei Deng ◽  
Huaiwen Guo ◽  
Fang Wang ◽  
Wei Zhou ◽  
...  
Keyword(s):  
Shannon Entropy ◽  
High Power ◽  
Small Scale ◽  
High Power Laser ◽  
Power Laser ◽  
Self Focusing ◽  
Laser Facility

HIGH-POWER OPTICAL SOURCE USING DYE-DOPED POLYMER OPTICAL FIBER

1996 ◽  
Vol 05 (01) ◽  
pp. 73-88 ◽  
Author(s):  
T. YAMAMOTO ◽  
K. FUJII ◽  
A. TAGAYA ◽  
E. NIHEI ◽  
Y. KOIKE ◽  
...  
Keyword(s):  
Optical Fibers ◽  
High Power ◽  
Rhodamine 6G ◽  
Experimental Result ◽  
Polymer Optical Fiber ◽  
Optical Source ◽  
Strong Excitation ◽  
Basic Characteristics ◽  
Polymer Optical Fibers ◽  
Doped Polymer

Basic characteristics of organic-dye doped polymer optical fibers (DPOFs) are demonstrated. The devices contain laser dye, such as Rhodamine 6G (R6G) and Rhodamine B (RB) in the core region. Firstly, amplification characteristics of DPOF amplifiers (PO-FAs) excited by a pulse-operated, doubled Nd:YAG laser are demonstrated, e.g., a 250 mm-length of RB-POFA gives 1 kW (30 dB) of amplified signal at 591 nm. Next, an all solid state system of RB DPOF laser (POFL) is discussed by numerical simulation and the experimental result of high-power amplified spontaneous emission (ASE) by strong excitation of DPOF is shown.

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