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Photonics
Special Issues
Research on Rare-Earth-Doped Fiber Lasers
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Research on Rare-Earth-Doped Fiber Lasers

A special issue of Photonics (ISSN 2304-6732). This special issue belongs to the section "Lasers, Light Sources and Sensors".

Deadline for manuscript submissions: 20 December 2024 | Viewed by 1601

Special Issue Editors

Prof. Dr. Nasser Peyghambarian

E-Mail Website
Guest Editor
Wyant College of Optical Sciences, The University of Arizona, Tucson, AZ, USA
Interests: optical networks and optical communication; fiber optics; fiber lasers and amplifiers; organic photonics; 3D holographic display and 3D telepresence; nonlinear photonics; optical modulators and switches; laser spectroscopy; nanostructures and quantum dots
Prof. Dr. Xiushan Zhu

E-Mail Website
Guest Editor
Wyant College of Optical Sciences, The University of Arizona, Tucson, AZ, USA
Interests: fiber lasers and devices; solid-state laser; nonlinear optics

Special Issue Information

Dear Colleagues,

Since the first demonstration of laser operation in a nyeodium-doped phosphate fiber by Koester and Snitzer in 1964, tremendous developments in all aspects of laser performance have been achieved with rare-earth-doped optic fibers over the past six decades. Compared to other laser platforms, fiber lasers have the advantages of outstanding heat-dissipating capability, excellent beam quality, high optical conversion efficiency and high single-pass gain. Relying on the transitions between different energy levels of trivalent rare-earth ions, fiber lasers are able to produce lasers at wavelengths ranging from ultraviolet to visible/near-infrared, and even to mid-infrared. The output power levels of fiber lasers have also undergone tremendous scaling after double-clad rare-earth-doped fibers were invented. A kW-level continuous-wave output can now be easily obtained with a ytterbium-doped double-clad silica fiber. Additionally, pulsed fiber lasers employing different pulse generation techniques have also been developed and ultrashort pulses (shorter than 10 femtoseconds) have been achieved. Nevertheless, rare-earth-doped fiber lasers face many challenges for novel applications.

This Special Issue invites manuscripts that introduce the recent advances in rare-earth-doped fiber lasers. All theoretical, numerical and experimental papers are accepted. Topics include, but are not limited to, the following:

  • Novel rare-earth-doped fiber lasers;
  • Advanced kW-class fiber laser design and development;
  • New power scaling techniques;
  • Visible fiber lasers;
  • Mid-IR fiber lasers;
  • Single-frequency fiber lasers;
  • Pulsed fiber lasers;
  • Fiber-laser-pumped nonlinear conversion lasers;
  • Multi-core and multimode fiber lasers;
  • New rare-earth-doped fiber fabrication techniques.

Prof. Dr. Nasser Peyghambarian
Prof. Dr. Xiushan Zhu
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Photonics is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • fiber lasers
  • rare-earth-doped fibers
  • continuous-wave fiber lasers
  • pulsed fiber lasers
  • mode-locked fiber lasers
  • visible fiber lasers
  • upconversion fiber lasers
  • mid-infrared fiber lasers
  • fiber-laser-pumped nonlinear conversion lasers
  • single-frequency fiber lasers
  • multicore fiber lasers
  • phosphate fiber lasers
  • germanate fiber lasers
  • fluoride fiber lasers
  • chalcogenide fiber lasers

Published Papers (2 papers)

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Research

10 pages, 3323 KiB  
Article
Single Trench Fiber-Enabled High-Power Fiber Laser
by Yi An, Fengchang Li, Huan Yang, Xiao Chen, Liangjin Huang, Zhiping Yan, Min Jiang, Baolai Yang, Peng Wang, Zhiyong Pan, Zongfu Jiang and Pu Zhou
Photonics 2024, 11(7), 615; https://doi.org/10.3390/photonics11070615 - 28 Jun 2024
Viewed by 245
Abstract
As a novel design of large-mode-area fiber, the single trench fiber (STF) providing high higher-order-mode suppression with a large mode area for the fundamental mode shows potential for high-power and high-brightness applications. However, the output power of STFs has remained relatively low over [...] Read more.
As a novel design of large-mode-area fiber, the single trench fiber (STF) providing high higher-order-mode suppression with a large mode area for the fundamental mode shows potential for high-power and high-brightness applications. However, the output power of STFs has remained relatively low over the past decade. In this paper, we first conducted a design process for STFs and determined the optimal ratio of the fiber structural parameters. Following this ratio, we fabricated an ytterbium-doped STF and demonstrated an all-fiberized fiber amplifier. The system achieved an output power of 2.5 kW with an M2 factor of 1.396. To the best of our knowledge, the power of the STF in this study is approximately three times higher than the previous single-mode power record. Full article
(This article belongs to the Special Issue Research on Rare-Earth-Doped Fiber Lasers)
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9 pages, 4367 KiB  
Communication
Gain-Switched Er-Doped Fluoride Fiber Laser at ~3.75 μm
by Lu Zhang, Shijie Fu, Quan Sheng, Xuewen Luo, Junxiang Zhang, Wei Shi, Qiang Fang and Jianquan Yao
Photonics 2024, 11(5), 449; https://doi.org/10.3390/photonics11050449 - 11 May 2024
Viewed by 727
Abstract
We demonstrate a pulsed Er-doped ZBLAN fiber laser operating at 3.75 μm based on the gain-switching scheme. A diffraction grating is introduced as a wavelength selection component to enable stable lasing in this long-wavelength region that deviates from the emission peak of 4 [...] Read more.
We demonstrate a pulsed Er-doped ZBLAN fiber laser operating at 3.75 μm based on the gain-switching scheme. A diffraction grating is introduced as a wavelength selection component to enable stable lasing in this long-wavelength region that deviates from the emission peak of 4F9/2→4I9/2 transition in Er3+. Different from the conventional gain-switching behavior where the pulse repetition frequency of the output laser is same as the that of the pump, the gain-switched laser demonstrated here shows a variable pulse repetition frequency, which accounts for 1/n (n = 4, 3, 2) of the pump pulse repetition frequency, in response to the 1950 nm pump power. The output pulse characteristics, including average output power, repetition frequency, pulse duration, and peak power, are investigated in detail. Over 200 mW average output power at 3.75 μm was obtained at 12 W of 1950 nm pump power. This work demonstrates that the Er-doped ZBLAN fiber laser, in combination with gain-switched scheme, is a feasible and promising approach to generate powerful pulsed emission > 3.7 μm. Full article
(This article belongs to the Special Issue Research on Rare-Earth-Doped Fiber Lasers)
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Planned Papers

The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.

Title: Experimental study on transverse mode instability of all-fiber single-frequency amplifier based on tapered Yb-doped fiber
Authors: Zhengfei Mo; Pengrui Kang; Man Jiang; Can Li; Jinyong Leng; Pu Zhou; Zongfu Jiang
Affiliation: College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha 410073, China
Abstract: We experimentally studied the transverse mode instability (TMI) threshold of a linearly-polarized single-frequency fiber laser amplifier constructed with tapered ytterbium-doped fiber (TYDF) under different bending diameters. The TMI threshold is raised from 333 W to 451 W by reducing the bending diameter from 16 cm to 12 cm, accompanied by the deterioration of the beam quality from 1.47 to 1.67. The anomaly characteristic between the TMI threshold, bending diameter and the beam quality is mainly attributed to a decreasing of the bending loss of higher order modes (HOMs) content, as a result of the increased system heat loads caused by tight bending induced loss of amplification efficiency. It is believed that the presented results will provide useful guidelines for the design of high-power single-frequency fiber amplifiers.

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