Article
Optics
Junsong Peng, Zihan Zhao, Sonia Boscolo, Christophe Finot, Srikanth Sugavanam, Dmitry Churkin, Heping Zeng
Summary: This study observed different types of breather complexes in a mode-locked fiber laser, with intermolecular temporal separation reaching several hundreds of picoseconds, indicating long-range interactions. This opens the possibility of studying the dynamics of many-body systems where breathers are the elementary constituents.
LASER & PHOTONICS REVIEWS
(2021)
Article
Optics
Xiuqi Wu, Junsong Peng, Sonia Boscolo, Ying Zhang, Christophe Finot, Heping Zeng
Summary: Generating pulse from an ultrafast laser is challenging task that involves adjusting multiple control parameters. Machine-learning tools have shown potential for designing smart lasers. The use of evolutionary algorithms for self-optimization of breather regime in fiber lasers opens up a new avenue for exploration and optimization of complex dynamics in nonlinear systems.
LASER & PHOTONICS REVIEWS
(2022)
Article
Optics
Zi-xuan Ding, Ye Chen, Fei Xu
Summary: A stable pulsed all-fiber laser based on the hybrid graphene microfiber knot resonator device is proposed and demonstrated, utilizing saturable absorption and the nonlinear-polarization-rotation effect for boosting multiple pulsation regimes. The versatile device achieved various pulse modes experimentally, acting as a polarizer, comb filter, and nonlinear component simultaneously, demonstrating a novel application in ultrafast and nonlinear photonics.
OPTICS AND LASER TECHNOLOGY
(2021)
Article
Engineering, Electrical & Electronic
Huihui Cheng, Kefeng Chen, Yingge Tao, Weilin Shao
Summary: This study demonstrates the existence of dissipative solitons in centimeter-scale fiber lasers and presents a general method for constructing dissipative solitons in short-length fiber lasers. The pulse stabilization mediated by the dissipative system improves long-term stability and is validated in terms of spectral and temporal domains.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2023)
Review
Optics
Kuen Yao Lau, Xiaofeng Liu, Jianrong Qiu
Summary: MXenes are a new class of two-dimensional materials with huge potential in photonics, electronics, and energy fields. Recent studies have shown that MXenes can replace traditional saturable absorbers, exhibiting high saturable absorption, flexible modulation ability, and high electron density. This review summarizes the synthesis and characterization of MXene, focusing on its nonlinear saturable absorption and its application as a saturable absorber in mode-locked fiber lasers.
LASER & PHOTONICS REVIEWS
(2022)
Article
Optics
Lisha Liu, Xingliang Li, Shumin Zhang, Jingmin Liu, Dan Yan, Yaxing Xin, Chaoran Wang, Zhenjun Yang
Summary: This study presents a wavelength changeable thulium-doped fiber laser (TDFL) based on a monolayer graphene saturable absorber (SA), which can operate in different modes and change wavelength over a range of 7-11 nm. This is the first TDFL that is changeable in wavelength under different operation modes and based on a monolayer graphene SA.
OPTICS AND LASER TECHNOLOGY
(2021)
Article
Engineering, Electrical & Electronic
Huihui Cheng, Wei Lin, Yu Zhang, Min Jiang, Wei Luo
Summary: This study focuses on the pulse instability in GHz repetition-rate thulium-doped fiber laser by using a combined physical model incorporating rate equations and nonlinear Schrodinger equation. Two pulsating regimes are predicted, and a novel pulse instability in continuous wave mode locking is revealed, providing reliable guidance for designing high repetition rate mode-locked fiber lasers.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Engineering, Electrical & Electronic
Dmitry A. Korobko, Dmitrii A. Stoliarov, Pavel A. Itrin, Valeria A. Ribenek, Maxim A. Odnoblyudov, Andrei B. Petrov, Regina Gumenyuk
Summary: Frequency shift in harmonically mode-locked soliton fiber lasers can increase the stability of interpulse interactions and lead to a stable periodic arrangement of pulses. The experimental results confirm the theoretical and numerical predictions of the stabilizing frequency shift effect in these lasers.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Optics
Katarzyna Krupa, Tomasz M. Kardas, Yuriy Stepanenko
Summary: This study demonstrates the real-time observation of double-Hopf-type breathers in an erbium-doped fiber laser and discusses their possible explanation. It provides important insights for understanding laser physics and optimizing fiber cavity design.
LASER & PHOTONICS REVIEWS
(2022)
Review
Nanoscience & Nanotechnology
Mordechai Segev, Miguel A. Bandres
Summary: Topological photonics, as one of the most active research areas in optics, has proven itself as an excellent platform for experimenting with concepts from condensed matter physics. It has also sparked new fundamental ideas and exciting applications that could potentially lead to real technologies in the near future.
Article
Optics
Nitish Paul, C. P. Singh, P. K. Gupta, Bhuvnesh, P. K. Mukhopadhyay, K. S. Bindra
Summary: This study reports the generation of rectangular dark pulses in a fiber laser, and experimental and numerical simulations show that reverse saturable absorption supports the formation of dark pulses. An ansatz model is proposed to explain the mechanism of rectangular dark pulse formation.
OPTICS AND LASER 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, Electrical & Electronic
Boris Nyushkov, Aleksey Ivanenko, Sergey Smirnov, Sergey Kobtsev
Summary: This study explores the mode-locking capabilities and frontiers of a quasi-synchronous pumping technique in an all-polarization-maintaining kilometer-long Yb-fiber laser, demonstrating stable generation of linearly polarized high-energy pulses with tunable nanosecond duration. Detuning of the pump modulation frequency is found to be crucial for pulse shaping control in such mode-locked laser systems.
OPTICAL FIBER TECHNOLOGY
(2021)
Article
Nanoscience & Nanotechnology
Marie S. Rider, Vincenzo Giannini
Summary: Topological quantum dots can serve as a new platform for THz lasing with low energy threshold and slow time scales, enabling room-temperature THz lasing pumped via blackbody radiation.
Article
Multidisciplinary Sciences
Haiming Deng, Lukas Zhao, Kyungwha Park, Jiaqiang Yan, Kamil Sobczak, Ayesha Lakra, Entela Buzi, Lia Krusin-Elbaum
Summary: This study reports reversible binding of H+ ions to chalcogens in topological insulators and magnets, allowing for the tuning of the Fermi level without altering carrier mobility or the bandstructure. The hydrogen-tuned topological nanostructures are stable at room temperature, opening up a range of possibilities for harnessing emergent topological states.
NATURE COMMUNICATIONS
(2022)
Article
Multidisciplinary Sciences
Dorota Tomaszewska-Rolla, Robert Lindberg, Valdas Pasiskevicius, Fredrik Laurell, Grzegorz Sobon
Summary: In this study, we experimentally demonstrate the nonlinear evolution of femtosecond seed pulses in a Yb-fiber amplifier and highlight the importance of temperature in the spectral output of the pulses. Additionally, we measure the relative intensity noise of the amplifier operating in the gain-managed nonlinear regime.
SCIENTIFIC REPORTS
(2022)
Article
Biochemical Research Methods
Dorota Stachowiak, Marcin Marzejon, Jakub Boguslawski, Zbigniew Laszczych, Katarzyna Komar, Maciej Wojtkowski, Grzegorz Sobon
Summary: We report the development of a widely-tunable femtosecond fiber laser system and its application for two-photon vision studies. The system offers efficient and safe two-photon stimulation and can be used for measuring the two-photon scotopic spectral sensitivity in humans.
BIOMEDICAL OPTICS EXPRESS
(2022)
Article
Optics
Zbigniew Laszczych, Grzegorz Sobon
Summary: We conducted an experimental investigation on a figure-nine-based Er-doped all-polarization-maintaining fiber laser and observed three different states of operation depending on the pumping power and the net cavity dispersion values. Our findings show that pulses at the reject port can offer comparable performance to those at the output port in certain operating states.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Optics
Karolina Stefanska, Sylwia Majchrowska, Karolina Gemza, Grzegorz Sobon, Jaroslaw Sotor, Pawel Mergo, Karol Tarnowski, Tadeusz Martynkien
Summary: This paper reports on the generation of trapped pulses in birefringent photonic crystal fiber. Linearly polarized ultrashort pulses are injected into the fiber in an anomalous dispersion regime. It is observed that a soliton pulse polarized along the fast fiber axis partially transfers its energy to the orthogonal polarization, and the generated pulse is amplified through the orthogonal Raman gain. The experimental results are consistent with numerical simulations, and they are important for applications using self-frequency shifted solitons that require high polarization purity.
Article
Optics
Matthias Germann, Adrian Hjalten, Vincent Boudon, Cyril Richard, Karol Krzempek, Arkadiusz Hudzikowski, Aleksander Gluszek, Grzegorz Sobon, Aleksandra Foltynowicz
Summary: In this study, a Fourier transform spectrometer was used to measure high-resolution spectra of methane under low-pressure and room-temperature conditions. The obtained line positions and intensities provide valuable data for studying the spectrum of methane isotopologues.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2022)
Article
Chemistry, Multidisciplinary
Zbigniew Laszczych, Mikolaj Krakowski, Grzegorz Sobon
Summary: This study presents a research on pulse dynamics in figure-nine Tm-doped all-polarization maintaining fiber laser. The transition from multi-pulse to single-pulse operation was achieved by decreasing the pump power, and thorough characterization of the laser was performed in both states.
APPLIED SCIENCES-BASEL
(2022)
Article
Optics
Olga Szewczyk, Zbigniew Laszczych, Grzegorz Sobon
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Optics
Alicja Kwasny, Jakub Boguslawski, Grzegorz Sobon
Summary: A multiphoton scanning laser microscope based on a femtosecond frequency-doubled erbium-doped fiber laser is presented. The microscope setup generated 95 fs pulses at 780 nm wavelength with an average power of 44.3 mW and a pulse repetition rate of 100 MHz. The imaging process was controlled by custom software developed in the NI LabVIEW environment. Two-photon fluorescence detection was proven by acquiring a series of images from various biological samples.
PHOTONICS LETTERS OF POLAND
(2022)
Meeting Abstract
Ophthalmology
Grazyna Palczewska, Jakub Boguslawski, Michal Dabrowski, Dorota Stachowiak, Grzegorz Sobon, Krzysztof Palczewski, Maciej Wojtkowski
INVESTIGATIVE OPHTHALMOLOGY & VISUAL SCIENCE
(2022)
Meeting Abstract
Ophthalmology
Marcin Marzejon, Agnieszka Zielinska, Dorota Stachowiak, Grzegorz Sobon, Maciej Wojtkowski, Katarzyna Komar
INVESTIGATIVE OPHTHALMOLOGY & VISUAL SCIENCE
(2022)
Article
Medicine, Research & Experimental
Jakub Boguslawski, Grazyna Palczewska, Slawomir Tomczewski, Jadwiga Milkiewicz, Piotr Kasprzycki, Dorota Stachowiak, Katarzyna Komar, Marcin J. Marzejon, Bartosz L. Sikorski, Arkadiusz Hudzikowski, Aleksander Gluszek, Zbigniew Laszczych, Karol Karnowski, Grzegorz Sobon, Krzysztof Palczewski, Maciej Wojtkowski
Summary: Researchers have developed a new method for noninvasive metabolic assessment of the human retina. Using a compact 2-photon-excited fluorescence scanning laser ophthalmoscope and near-infrared light, they were able to obtain spectrally resolved images of the human retina. This approach provides the possibility of monitoring eye diseases in the earliest stages before structural damage occurs to the retina.
JOURNAL OF CLINICAL INVESTIGATION
(2022)
Proceedings Paper
Engineering, Electrical & Electronic
Matthias Germann, Adrian Hjalten, Karol Krzempek, Arkadiusz Hudzikowski, Aleksander Gluszek, Dorota Tomaszewska, Grzegorz Sobon, Aleksandra Foltynowicz
2021 CONFERENCE ON LASERS AND ELECTRO-OPTICS EUROPE & EUROPEAN QUANTUM ELECTRONICS CONFERENCE (CLEO/EUROPE-EQEC)
(2021)
Proceedings Paper
Engineering, Electrical & Electronic
Zbigniew Laszczych, Grzegorz Sobon
2021 CONFERENCE ON LASERS AND ELECTRO-OPTICS EUROPE & EUROPEAN QUANTUM ELECTRONICS CONFERENCE (CLEO/EUROPE-EQEC)
(2021)
Proceedings Paper
Engineering, Electrical & Electronic
Chuang Lu, Francisco Senna Vieira, Aleksander Gluszek, Isak Silander, Grzegorz Sobon, Aleksandra Foltynowicz
2021 CONFERENCE ON LASERS AND ELECTRO-OPTICS EUROPE & EUROPEAN QUANTUM ELECTRONICS CONFERENCE (CLEO/EUROPE-EQEC)
(2021)
Proceedings Paper
Engineering, Electrical & Electronic
Vinicius Silva de Oliveira, Isak Silander, Lucile Rutkowski, Alexandra C. Johansson, Grzegorz Sobon, Ove Axner, Kevin K. Lehmann, Aleksandra Foltynowicz
2021 CONFERENCE ON LASERS AND ELECTRO-OPTICS EUROPE & EUROPEAN QUANTUM ELECTRONICS CONFERENCE (CLEO/EUROPE-EQEC)
(2021)
