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Photonics
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Novel Materials and Technologies for Fiber Lasers
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Novel Materials and Technologies for 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: closed (31 October 2021) | Viewed by 6508

Special Issue Editor

Dr. Alexey V. Andrianov

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Guest Editor
Institute of Applied Physics, Russian Academy of Sciences, Nizhny Novgorod, Russia
Interests: optical fibers; fiber lasers; femtosecond lasers; optical pulses

Special Issue Information

Dear Colleagues,

The present Special Issue is dedicated to recent advances in materials and technologies for fiber lasers. Topics of interest include but are not limited to the following areas:

  • Optical fibers based on new perspective materials (including doped glasses, soft glasses, and highly nonlinear glasses) and advanced laser systems (CW and pulsed, including systems with nonlinear light conversion stages) based on such fibers in various wavelength ranges, including mid-IR;
  • Photosensitive fibers, fiber Bragg gratings, and their applications in advanced fiber lasers;
  • Novel fiber designs for power/energy scaling of laser systems, including photonic crystal fibers and multi-core fibers, novel nonlinear propagation regimes in multimode fibers, and advanced high-power fiber amplifier designs;
  • Gas- and liquid-filled fibers and their applications in advanced fiber lasers;
  • Novel 2D materials for fiber lasers, the integration of such materials with fibers, and the applications of such integrations in fiber lasers, including mode-locking and Q-switching.

Dr. Alexey V. Andrianov
Guest Editor

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.

Published Papers (3 papers)

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Research

13 pages, 3964 KiB  
Communication
Passively Q-Switched and Mode-Locked Er3+-Doped Ring Fiber Laser with Pulse Width of Hundreds of Picoseconds
by Ji Wang, Wenwu Zhang and Tianrun Zhang
Photonics 2021, 8(12), 560; https://doi.org/10.3390/photonics8120560 - 08 Dec 2021
Cited by 2 | Viewed by 2061
Abstract
Greatly improving the energy of a single mode-locked pulse while ensuring the acquisition of the width of short pulses will contribute to the application of mode-locked pulse in basic research, such as precision machining. This report has investigated a Q-switched and mode-locked (QML) [...] Read more.
Greatly improving the energy of a single mode-locked pulse while ensuring the acquisition of the width of short pulses will contribute to the application of mode-locked pulse in basic research, such as precision machining. This report has investigated a Q-switched and mode-locked (QML) erbium doped ring fiber laser based on the nonlinear polarization rotation (NPR) technology and a mechanical Q-switched device. Without the working of the mechanical Q-switched device, the fiber laser exported the continuous-wave mode-locked (CWML) pulse, with a width of 212.5 ps, and a repetition frequency of 81.97 MHz. For the CWML operation, the maximum output average power is 25.7 mW, and the energy is only 0.31 nJ. For the QML operation, 18.03 mW average power is achieved at the Q-switching frequency of 100 Hz. The energy of the QML pulse is increased by over 1100 times to 360.6 nJ. The width of the QML pulse is 203.1 ps measured by an autocorrelation curve, with the time-band product (TBP) being 0.598. The power instability is 0.5% (RMS) and 0.7% (RMS), respectively, for CWML and QML operation within 120 min. Furthermore, the spectral signal-to-noise ratio is about 60 dB. For the QML operation, the power instability is 0.48% (RMS) within 60 s and 0.37% (RMS) within 10 s. After frequency stabilization, the frequency fluctuation is ±100 Hz in the long-term of 1200 s, with the frequency stability (FS) calculated to be 2.44 × 10−6. It indicates that the QML fiber laser has good power stability and frequency stability. Full article
(This article belongs to the Special Issue Novel Materials and Technologies for Fiber Lasers)
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12 pages, 1112 KiB  
Article
Numerical Simulations on Polarization Quantum Noise Squeezing for Ultrashort Solitons in Optical Fiber with Enlarged Mode Field Area
by Arseny A. Sorokin, Elena A. Anashkina, Joel F. Corney, Vjaceslavs Bobrovs, Gerd Leuchs and Alexey V. Andrianov
Photonics 2021, 8(6), 226; https://doi.org/10.3390/photonics8060226 - 18 Jun 2021
Cited by 12 | Viewed by 1930
Abstract
Broadband quantum noise suppression of light is required for many applications, including detection of gravitational waves, quantum sensing, and quantum communication. Here, using numerical simulations, we investigate the possibility of polarization squeezing of ultrashort soliton pulses in an optical fiber with an enlarged [...] Read more.
Broadband quantum noise suppression of light is required for many applications, including detection of gravitational waves, quantum sensing, and quantum communication. Here, using numerical simulations, we investigate the possibility of polarization squeezing of ultrashort soliton pulses in an optical fiber with an enlarged mode field area, such as large-mode area or multicore fibers (to scale up the pulse energy). Our model includes the second-order dispersion, Kerr and Raman effects, quantum noise, and optical losses. In simulations, we switch on and switch off Raman effects and losses to find their contribution to squeezing of optical pulses with different durations (0.1–1 ps). For longer solitons, the peak power is lower and a longer fiber is required to attain the same squeezing as for shorter solitons, when Raman effects and losses are neglected. In the full model, we demonstrate optimal pulse duration (~0.4 ps) since losses limit squeezing of longer pulses and Raman effects limit squeezing of shorter pulses. Full article
(This article belongs to the Special Issue Novel Materials and Technologies for Fiber Lasers)
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15 pages, 4483 KiB  
Article
Design and Dispersion Control of Microstructured Multicore Tellurite Glass Fibers with In-Phase and Out-of-Phase Supermodes
by Elena A. Anashkina and Alexey V. Andrianov
Photonics 2021, 8(4), 113; https://doi.org/10.3390/photonics8040113 - 08 Apr 2021
Cited by 12 | Viewed by 1892
Abstract
High nonlinearity and transparency in the 1–5 μm spectral range make tellurite glass fibers highly interesting for the development of nonlinear optical devices. For nonlinear optical fibers, group velocity dispersion that can be controlled by microstructuring is also of great importance. In this [...] Read more.
High nonlinearity and transparency in the 1–5 μm spectral range make tellurite glass fibers highly interesting for the development of nonlinear optical devices. For nonlinear optical fibers, group velocity dispersion that can be controlled by microstructuring is also of great importance. In this work, we present a comprehensive numerical analysis of dispersion and nonlinear properties of microstructured two-, four-, six-, and eight-core tellurite glass fibers for in-phase and out-of-phase supermodes and compare them with the results for one-core fibers in the near- and mid-infrared ranges. Out-of-phase supermodes in tellurite multicore fibers are studied for the first time, to the best of our knowledge. The dispersion curves for in-phase and out-of-phase supermodes are shifted from the dispersion curve for one-core fiber in opposite directions; the effect is stronger for large coupling between the fields in individual cores. The zero dispersion wavelengths of in-phase and out-of-phase supermodes shift to opposite sides with respect to the zero-dispersion wavelength of a one-core fiber. For out-of-phase supermodes, the dispersion can be anomalous even at 1.55 μm, corresponding to the operating wavelength of Er-doped fiber lasers. Full article
(This article belongs to the Special Issue Novel Materials and Technologies for Fiber Lasers)
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