Fiber Lasers: Recent Advances and Applications

Dear Colleagues,

As one of the most popular laser sources today, fiber lasers are well developed for a plethora of applications, such as optical communications, sensing, biomedical, spectroscopy and imaging, material processing, micromachining, etc. A fiber laser can be a linear or ring-type laser with doped fiber as gain medium, operating in narrow linewidths, single frequencies, as well as Q-switched and mode-locked regimes. To date, there is a growing demand for a high-performance fiber laser with higher operating powers, higher slope efficiency, better beam quality, and more.

The fiber laser concept is developed by realizing upconversion lasers due to the need for high pump intensities during laser transition operations. Such high pump intensities can be well maintained over long lengths, which offers a higher gain efficiency for operations across low-gain transitions. The gain transitions are achieved through the use of active optical fibers (such as doped silica fibers) and heavy-metal fluoride fibers (such as ZBLAN).

The Special Issue aims to present original state-of-the-art research articles dealing with recent advances and applications of fiber lasers. Researchers are invited to submit their contributions to this Special Issue. Topics include, but are not limited to, the following:

• Fiber lasers;
• Narrow linewidth fiber lasers;
• Single longitudinal mode fiber lasers;
• Q-switched fiber lasers;
• Mode-locked fiber lasers;
• Multiwavelength fiber lasers;
• Brillouin fiber lasers;
• Raman fiber lasers;
• Fiber lasers with semiconductor optical amplifiers;
• High-power fiber lasers;
• Modeling of fiber lasers;
• Supercontinuum fiber lasers;
• Applications of fiber lasers.

Dr. Lau Kuen Yao
Dr. Jiancheng Zheng
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.

• fiber lasers
• optical fibers
• laser resonators
• advances of fiber laser
• fiber laser applications

Title: Bismuth-doped fiber lasers and optical amplifiers operating in O+E+S+C+L+U-bands: current state of the art and outlook
Authors: A.M. Khegai(1); A.A. Umnikov(2); S.V. Alyshev(1); S.V. Firstov(1,*)
Affiliation: 1) Prokhorov General Physics Institute of the Russian Academy of Sciences, Dianov Fiber Optics Research Center, 38 Vavilov str., 119991 Moscow, Russia; 2) G.G.Devyatyh Institute of Chemistry of High-Purity Substances of the Russian Academy of Sciences, 49 Tropinin str., 603951 Nizhny Novgorod, Russia