Article
Optics
Bing Han, Han Wu, Yang Liu, Shisheng Dong, Yunjiang Rao, Zinan Wang, Jiangming Xu, Lingmei Ma
Summary: Random fiber laser (RFL) utilizing stimulated Raman scattering and distributed random Rayleigh backscattering in fiber as optical gain and feedback mechanisms has been rapidly developed. By using a high-order pump and new transmission fiber with lower transmission loss, Rayleigh backscattering coefficient, and Raman gain coefficient, the length limits of random fiber lasing and sensing can be broken. A 200 km ultralong single-ended RFL and sensor are experimentally demonstrated, which are the longest single-ended RFL and sensor with functional remote reflectors reported to date. The proposed combination of high-order random lasing and ULLF with EDF can extend the working distance of various fiber sensing systems for safety monitoring of ultralong infrastructures.
LASER & PHOTONICS REVIEWS
(2023)
Article
Optics
Jiancheng Deng, D. Churkin, Zuowei Xu, Xuewen Shu
Summary: This paper proposes a stable single wavelength random fiber laser for high temperature sensing and demonstrates its feasibility through experimentation. By designing a partial-reflection random fiber grating, stability is achieved with one reflection peak higher than the others. The laser achieves temperature sensing in the range from 25 degrees Celsius to 500 degrees Celsius.
Article
Optics
Di Wu, Shuang Tian, Xiaojuan Zhang, Benli Yu, Jiajun Ma, Kang Xie, Sheng Cheng, Junxi Zhang, Zhijia Hu
Summary: A novel erbium-doped random fiber laser optical switch with rapid response and simple structure is proposed in this study. By using a liquid crystal-filled photonic crystal fiber as the sensing unit, a high-extinction ratio laser switch is achieved. The optical switch has the advantages of low cost, high sensitivity, and strong anti-interference ability.
OPTICS AND LASER TECHNOLOGY
(2022)
Review
Chemistry, Analytical
Stephen J. Mihailov, Cyril Hnatovsky, Nurmemet Abdukerim, Robert B. Walker, Ping Lu, Yanping Xu, Xiaoyi Bao, Huimin Ding, Manny De Silva, David Coulas, Dan Grobnic
Summary: Recent progress in the use of infrared femtosecond lasers for fabricating optical fiber sensors, such as fiber Bragg gratings and random fiber gratings, has enabled advancements in through-the-coating fabrication of Bragg gratings in ultra-thin fiber filaments and novel applications in distributed temperature sensing and fiber laser sensors.
Article
Optics
Lewen Zhou, Yaozong Hu, Wenlong Zheng, Pengbai Xu, Zhensen Gao, Xinyong Dong
Summary: A triple-wavelength thulium-doped fiber random laser with a 10 cm long random fiber grating and a superimposed fiber Bragg grating as the wavelength-selective mirror was demonstrated. The use of a femtosecond laser inscribed random fiber grating in single-mode fibers provided strong random distributed feedback, resulting in a relatively low threshold power. Triple-wavelength random laser output at wavelengths of 1943.6, 1945.0, and 1946.3 nm was achieved with a low threshold power of 2.01 W and good wavelength stability using a 793 nm laser diode.
Article
Optics
Haiyang Wang, Chen Chen, Ping Lu, Stephen Mihailov, Liang Chen, Xiaoyi Bao
Summary: In this study, a polarization-maintaining random fiber grating ring (PM-RFGR) resonator is proposed and demonstrated for achieving high-precision frequency stabilization. By integrating the RFGR resonator with a random fiber laser, longitudinal modes are suppressed and mode-hopping-free operation is achieved. Experimental results show that small frequency drift can be achieved and an all optical locking mechanism is provided.
Article
Optics
Zichao Zhou, Haiyang Wang, Yuan Wang, Liang Chen, Xiaoyi Bao
Summary: This study investigates the interaction between random lasers and gain medium by characterizing the time-resolved distributed acoustic wave generated by a Brillouin random fiber laser (BRFL) using optical time domain reflectometry. The results show the dynamic properties of the acoustic wave, reflecting the gain dynamics of the BRFL. The distributed characterization methods utilized in this paper offer a new perspective to understand the fundamental physics of the random lasing process and its noise property.
PHOTONICS RESEARCH
(2021)
Article
Optics
Yuxi Pang, Shaonian Ma, Xian Zhao, Zengguang Qin, Zhaojun Liu, Yanping Xu
Summary: A broadband high-sensitivity fiber-optic acoustic sensor based on Brillouin random fiber laser (BRFL) is proposed and demonstrated. The sensor utilizes a double coupler fiber ring resonator (DCFRR) in the BRFL as the sensing element, which filters out redundant random modes and ensures high-quality lasing output. The experimental results show that the sensor has a broadband frequency response and high sensitivity, making it suitable for detecting acoustic signals in both low-frequency and high-frequency regions with a high signal-to-noise ratio.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Engineering, Electrical & Electronic
Jiancheng Deng, Ming Shen, Yanxin Li, D. Churkin, Xuewen Shu
Summary: This study proposes and demonstrates the power scalability in a novel random Raman fiber laser (RRFL) with localized random feedback. The use of a low-reflection random fiber grating (RFG) composed of a randomly distributed sub-grating array enables the power scalability. The spectral filtering is implemented by a high-reflection fiber Bragg grating to ensure laser emission at the wavelength of the highest reflection peak of the RFG.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2022)
Article
Physics, Multidisciplinary
Shanshan Wang, Weili Zhang, Yanli Zhang, Yunjiang Rao
Summary: Mode locking of a long-cavity Raman fiber laser pumped by a low-noise random fiber laser has been experimentally demonstrated, generating tunable square-wave noise-like pulses through nonlinear polarization rotation technology. The approach provides a good temporal stable pump source for mode locking of Raman fiber lasers and enriches the methods of laser pulse generation and regulation.
ANNALEN DER PHYSIK
(2021)
Article
Engineering, Multidisciplinary
Han Wu, Ji Xiong, Bing Han, ZiNan Wang, WeiLi Zhang, XinHong Jia, HouKun Liang
Summary: This paper proposes an ultra-high speed random bit generator based on a ytterbium-doped random fiber laser, achieving a physical random bit generation rate of 200 Gbps by utilizing chaotic signals and sampled signals. The combination of broadband emission and lack of time-delay signatures in random fiber lasers shows great potential for high performance random bit generation in cryptography and secure communication applications.
SCIENCE CHINA-TECHNOLOGICAL SCIENCES
(2021)
Article
Instruments & Instrumentation
Ailing Zhang, Chaofan Zhen, Honggang Pan, Haozhe Chen, Fei Liu, Pengxiang Chang, Junfeng Wang
Summary: This paper demonstrates the generation of stable pulse train from an all-optical passively Q-switched random fiber laser (RFL) with cascaded doped fiber segments and random phase-shift Bragg grating. The repetition rate and pulse width of the pulse can be controlled by the combination of two pump powers.
INFRARED PHYSICS & TECHNOLOGY
(2023)
Article
Engineering, Electrical & Electronic
Bing Lv, Wentao Zhang, Wenzhu Huang, Fang Li
Summary: A low frequency-noise ring random fiber laser (RFL) based on random Bragg grating array (RBGA) feedback is proposed. The dual-cavity fiber Bragg grating Fabry-Perot (FBG-FP) filter is specially designed to suppress frequency jitter and undesired random lasing modes, achieving stable laser output and reduced frequency noise.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2022)
Article
Engineering, Electrical & Electronic
Jiancheng Deng, Yanxin Li, Ming Shen, Xuewen Shu
Summary: This paper proposes and demonstrates a novel single-frequency erbium-doped random distributed Bragg reflector fiber laser, constructed by a random fiber grating and a high-reflection fiber Bragg grating. The use of femtosecond laser point-by-point inscription technique for the random fiber grating enables easy and low-cost fabrication of long gratings. Experimental results show that the laser achieves stable single-peak emission and operates at a single frequency.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2022)
Article
Engineering, Electrical & Electronic
Abdul Rahman Sarmani, Norita Mohd Yusoff, Abdulmoghni Wazae Al-Alimi, Mohammed Thamer Alresheedi, Nurul Hida Zainuddin, Eng Khoon Ng, Mohd Adzir Mahdi
Summary: We propose a random Raman fiber laser pumped by a continuous-wave 1480 nm source. Backward pumping feedback loop enables unidirectional propagation of 1584 nm wave under tighter confinement of dispersion compensating fiber (DCF). This geometry supports two types of nonlinear broadening, with one favoring 1.76-3.37 nm spectral progress and the other starting at 4.88 nm before gradually decreasing to 4.05 nm. The DCF plays double roles as a stabilizing factor and for dispersion management.
OPTICAL AND QUANTUM ELECTRONICS
(2023)
Article
Optics
L. L. Ogorodnikov, S. S. Vergeles
Article
Physics, Fluids & Plasmas
V. M. Parfenyev, S. Filatov, M. Yu Brazhnikov, S. S. Vergeles, A. A. Levchenko
PHYSICAL REVIEW FLUIDS
(2019)
Article
Physics, Multidisciplinary
A. B. Buzovkin, I. V. Kolokolov, V. V. Lebedev, S. S. Vergeles
Article
Physics, Fluids & Plasmas
I. Kolokolov, L. L. Ogorodnikov, S. S. Vergeles
PHYSICAL REVIEW FLUIDS
(2020)
Article
Chemistry, Analytical
Pavel Valentinovich Dudkin, Dmitry Alekseevich Zhevnenko, Sergey Vladimirovich Kokhanovsky, Sergey Sergeevich Vergeles, Tatiana Viktorovna Krishtop, Vladimir Grigorevich Krishtop
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2020)
Article
Physics, Fluids & Plasmas
Vladimir M. Parfenyev, Sergey S. Vergeles
PHYSICAL REVIEW FLUIDS
(2020)
Article
Mechanics
A. N. Doludenko, S. V. Fortova, I. V. Kolokolov, V. V. Lebedev
Summary: The study investigates the coherent vortex produced by two-dimensional turbulence in a finite box, establishes the mean velocity profile of the vortex analytically, and expresses its characteristics via pumping parameters. The theoretical predictions are verified and confirmed through direct numerical simulations in the framework of two-dimensional weakly compressible hydrodynamics with zero boundary conditions.
Article
Physics, Multidisciplinary
Marco Zamparo, Donatella Valdembri, Guido Serini, Igor Kolokolov, Vladimir V. Lebedev, Luca Dall'Asta, Andrea Gamba
Summary: This study introduces a simple physical picture to explain the process of molecular sorting in eukaryotic cells, where specific proteins are concentrated in submicrometric lipid vesicles. By formulating a model based on the coupling of spontaneous molecular aggregation with vesicle nucleation, the study finds that the efficiency of the distillation process is optimal for intermediate aggregation rates obeying simple scaling laws. Quantitative measures of endocytic sorting in primary endothelial cells are consistent with the hypothesis that these optimal conditions are realized in living cells.
PHYSICAL REVIEW LETTERS
(2021)
Article
Nanoscience & Nanotechnology
E. A. Efremova, S. Perminov, S. S. Vergeles
Summary: The study focuses on the transmission resonances of an encapsulated grid structure embedded in an optically-homogeneous medium with waveguide capability leading to full reflectance. Different diffraction spectra of the grids are systematically investigated, with the parameters affecting the diffraction properties identified.
PHOTONICS AND NANOSTRUCTURES-FUNDAMENTALS AND APPLICATIONS
(2021)
Article
Mechanics
Vladimir M. Parfenyev, Ivan A. Vointsev, Alyona O. Skoba, Sergey S. Vergeles
Summary: Strong rotation results in quasi-two-dimensional turbulent flow and the formation of coherent vortex structures known as condensates. External rotation speed affects the symmetry of cyclones and anticyclones velocity profiles, as well as the size limitation of the vortices.
Article
Mechanics
Vladimir M. Parfenyev, Sergey S. Vergeles
Summary: In the presence of strong background rotation, the velocity field tends to become quasi-two-dimensional, leading to an inverse energy cascade. Recent findings show that the radial velocity profiles of axisymmetric cyclones and anticyclones are described by a specific equation, but this theory did not account for boundary effects. The study demonstrates that for typical experimental conditions, the damping of the condensate is determined by linear Ekman friction associated with no-slip conditions at the lower and upper boundaries.
Article
Mechanics
Nikolay A. Ivchenko, Sergey S. Vergeles
Summary: The study focuses on time-averaged properties of coherent vortices in two-dimensional turbulence, classifying weak perturbations as waves of condensate propagating in the radial direction. The dispersion law and propagation length of these waves are dependent on the radial position inside the vortex flow, with variations between saturated condensate and viscous condensate cases.
Proceedings Paper
Nanoscience & Nanotechnology
V. Shoev, E. A. Efremova, A. A. Zinchik, I. R. Krylov, U. Prokhorova, E. Shalymov, S. S. Vergeles, V. Yu Venediktov
NANOPHOTONICS AND MICRO/NANO OPTICS VI
(2020)
Proceedings Paper
Optics
L. L. Ogorodnikov, S. S. Vergeles, V. V. Lebedev
OPTICS, PHOTONICS AND LASERS
(2018)
Article
Optics
Stanislav Derevyanko, Alexey Redyuk, Sergey Vergeles, Sergei Turitsyn
