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Volume 11
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This is an early access version, the complete PDF, HTML, and XML versions will be available soon.
Article

Erbium-Doped Fibers Designed for Random Single-Frequency Lasers Operating in the Extended L-Band

by
Denis Lipatov
1,*,
Alexey Abramov
1,
Alexey Lobanov
1,
Denis Burmistrov
1,
Sergei Popov
2,
Dmitry Ryakhovsky
2,
Yuriy Chamorovskiy
2,
Alexey Bazakutsa
3,
Liudmila Iskhakova
4,
Olga Egorova
5 and
Andrey Rybaltovsky
4
1
G. G. Devyatykh Institute of Chemistry of High-Purity Substances, Russian Academy of Sciences, 603951 Nizhny Novgorod, Russia
2
Kotelnikov Institute of Radioengineering and Electronics (Fryazino Branch), Russian Academy of Sciences, 141190 Fryazino, Russia
3
Kotelnikov Institute of Radioengineering and Electronics, Russian Academy of Sciences, 125009 Moscow, Russia
4
Dianov Fiber Optics Research Center, 119333 Moscow, Russia
5
Prokhorov General Physics Institute of the Russian Academy of Sciences, 119991 Moscow, Russia
*
Author to whom correspondence should be addressed.
Photonics 2024, 11(12), 1175; https://doi.org/10.3390/photonics11121175
Submission received: 19 November 2024 / Revised: 6 December 2024 / Accepted: 11 December 2024 / Published: 13 December 2024
(This article belongs to the Section Lasers, Light Sources and Sensors)
Versions Notes

Abstract

The paper presents the results of developing Er-doped optical fibers for creating random single-frequency lasers in the wavelength range of 1570–1610 nm. The possibility of broadening the luminescence band of Er3+ ions in silicate glasses in the long-wavelength region of the spectrum by introducing a high concentration of P2O5, as well as by additional doping with Sb2O3, is investigated. It is found that both approaches do not improve the dynamics of luminescence decay in the L-band. In addition, Er2O3-GeO2-Al2O3-SiO2 and Er2O3-GeO2-Al2O3-Р2О5-SiO2 glasses were studied as the core material for L-band optical fibers. The developed fibers exhibited high photosensitivity and a high gain of 5 and 7.2 dB/m, respectively. In these fibers, homogeneous arrays of extended weakly reflecting Bragg gratings were recorded directly during the fiber drawing process. Samples of arrays 5 m long and with a narrow reflection maximum at ~1590 nm were used as the base for laser resonators. Narrow-band random laser generation in the wavelength region of 1590 nm was recorded for the first time. At a temperature of 295 K, the laser mode was strictly continuous wave and stable in terms of output power. The maximal power exceeded 16 mW with an efficiency of 16%.
Keywords: silicate glass; erbium fiber; photosensitivity; gain; fiber Bragg grating; random fiber laser silicate glass; erbium fiber; photosensitivity; gain; fiber Bragg grating; random fiber laser

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MDPI and ACS Style

Lipatov, D.; Abramov, A.; Lobanov, A.; Burmistrov, D.; Popov, S.; Ryakhovsky, D.; Chamorovskiy, Y.; Bazakutsa, A.; Iskhakova, L.; Egorova, O.; et al. Erbium-Doped Fibers Designed for Random Single-Frequency Lasers Operating in the Extended L-Band. Photonics 2024, 11, 1175. https://doi.org/10.3390/photonics11121175

AMA Style

Lipatov D, Abramov A, Lobanov A, Burmistrov D, Popov S, Ryakhovsky D, Chamorovskiy Y, Bazakutsa A, Iskhakova L, Egorova O, et al. Erbium-Doped Fibers Designed for Random Single-Frequency Lasers Operating in the Extended L-Band. Photonics. 2024; 11(12):1175. https://doi.org/10.3390/photonics11121175

Chicago/Turabian Style

Lipatov, Denis, Alexey Abramov, Alexey Lobanov, Denis Burmistrov, Sergei Popov, Dmitry Ryakhovsky, Yuriy Chamorovskiy, Alexey Bazakutsa, Liudmila Iskhakova, Olga Egorova, and et al. 2024. "Erbium-Doped Fibers Designed for Random Single-Frequency Lasers Operating in the Extended L-Band" Photonics 11, no. 12: 1175. https://doi.org/10.3390/photonics11121175

APA Style

Lipatov, D., Abramov, A., Lobanov, A., Burmistrov, D., Popov, S., Ryakhovsky, D., Chamorovskiy, Y., Bazakutsa, A., Iskhakova, L., Egorova, O., & Rybaltovsky, A. (2024). Erbium-Doped Fibers Designed for Random Single-Frequency Lasers Operating in the Extended L-Band. Photonics, 11(12), 1175. https://doi.org/10.3390/photonics11121175

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