Article
Optics
Anton Pakhomov, Mikhail Arkhipov, Nikolay Rosanov, Rostislav Arkhipov
Summary: The article derives a generalization of the area theorem for a pulse circulating inside a ring laser cavity. Unlike the standard area theorem, which applies to a single pass of a traveling pulse through a resonant medium, the derived generalized area theorem considers the medium-assisted nonlinear self-action effects caused by the medium excitation left by the pulse in the previous round-trip in the cavity. The derived area theorem can be used for the analytical description of various coherent photonic devices and the analysis of photon echo formation in cavity-based setups.
Article
Optics
Shangzhi Xie, Liang Jin, He Zhang, Xiaohui Li, Xiaochen Zhang, Yingtian Xu, Xiaohui Ma
Summary: In this paper, an all-fiber high-power spatiotemporal mode-locked (STML) laser is demonstrated by optimizing multimode interference (MMI) filtering. The experiment results show the generation of dissipative soliton pulses and the observation of multiple solitons. This work broadens the design dimensions of all-fiber high-power STML and has significant applications.
Article
Optics
L. A. Rodriguez-Morales, I Armas-Rivera, M. Duran-Sanchez, E. Silvestre, M. Andres, B. Ibarra-Escamilla
Summary: The study investigated the polarization dynamics in a free birefringence mode-locked fiber laser through numerical and experimental methods, revealing changes in ellipticity due to nonlinear birefringence in a 20-m long bi-twisted fiber. The inclusion of bi-twisted fiber allowed for independent investigation of nonlinear effects and linear effects.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Optics
Jinho Lee, Suhyoung Kwon, Luming Zhao, Ju Han Lee
Summary: This study evaluates the impact of SA recovery time on the output performance of an Yb-doped fiber laser in the dissipative soliton regime, finding that setting a too-slow recovery time can lead to unstable output pulses. The optimal recovery time depends on cavity dispersion and SA modulation depth, and constructing a fiber laser cavity with small normal cavity group velocity dispersion and using an SA with appropriate recovery time is the best approach for generating the shortest dechirped pulses in the dissipative soliton regime.
Article
Optics
Zhen Zeng, Lingjie Zhang, Yilin Wu, Zhiyao Zhang, Shangjian Zhang, Yali Zhang, Bao Sun, Yong Liu
Summary: A novel approach for generating multi-format microwave signals directly from an optoelectronic oscillator (OEO) is proposed and experimentally demonstrated in this study. By dynamically controlling the net gain in the OEO cavity, different microwave signals can be generated, including single-tone signals, pulse trains, and rectangular waveforms with varying duty cycles. The proposed method shows potential for generating various types of microwave signals in a broad frequency range, making it suitable for applications in multi-functional microwave photonic systems.
Article
Optics
Bang Zhao, Tian-Xu Zhao, Guang-Xin Liu, Nan Zhao, Hu Cui, Zhi-Chao Luo, Wen-Cheng Xu, Ai-Ping Luo
Summary: We have reported a spatiotemporal mode locked multimode fiber laser, based on nonlinear amplifying loop mirror (NALM) for the first time, which generates dissipative soliton resonance (DSR) pulses and has wavelength tunable function. The complex filtering characteristics in the cavity, caused by the inherent multimode interference filtering structure and NALM, contribute to the generation of STML DSR pulses. This study provides insights into the nonlinear properties of STML lasers and may help improve the performance of multimode fiber lasers.
Article
Engineering, Electrical & Electronic
Chonghao Wu, Yong Yao, Qianchao Wu, Yanfu Yang, Jiajun Tian, Ke Xu
Summary: The influence of the average nonlinear coefficient on noise-like pulse in a figure-of-eight erbium-doped fiber laser was investigated. Changing the length of highly nonlinear fiber in the nonlinear amplifying loop mirror led to spectral evolutions and a decline in peak power of the noise-like pulse. Moreover, the tuning range of the pulse duration varied depending on the average nonlinear coefficient selected.
OPTICAL FIBER TECHNOLOGY
(2021)
Article
Optics
Wei Lin, Wenlong Wang, Bin He, Xuewen Chen, Xu Hu, Yuankai Guo, Yue Xu, Xiaoming Wei, Zhongming Yang
Summary: The formation of vector solitons in fiber lasers and effective methods for suppressing polarization dynamics were investigated theoretically and experimentally. Numerical models predicted dynamic and stable mode-locking regimes, resulting in PRVS and LPS. Experimental results verified the theoretical predictions.
Article
Instruments & Instrumentation
Shuo Sun, Xinxin Shang, Fuhao Yang, Zhiqi Sui, Zhifeng Hong, Si Chen, Yanjuan Wang, Shenggui Fu, Wenfei Zhang, Cheng Lu, Guomei Wang, Yule Zhang, S. Wageh, Ahmed A. Al-Ghamdi, Han Zhang, Huanian Zhang
Summary: Passive ultrafast photoelectric devices based on the self-focusing effect have been studied for ultrashort pulse formation, particularly in solid-state oscillators like Kerr-lens mode-locking (KLM). Recently, researchers have shown great interest in exploring stable and reliable fiber lasers due to their advantages such as compact structure, environmental stability, heat dissipation potential, and low cost. This work demonstrates a high-stable self-mode-locking Er-doped fiber laser, showcasing diverse stable self-mode-locking pulses phenomena through adjusting the polarization state of the cavity.
INFRARED PHYSICS & TECHNOLOGY
(2022)
Article
Optics
Fanming Li, Bin Liu, Haining Ji, Jie Peng, Chao Tan, Pinghua Tang
Summary: In this study, numerical simulations were conducted to investigate the generation of sub-100 fs ultrafast pulses in the mid-IR region. The results show the possibility of achieving stable self-similar pulses with a large linear chirp, which can be compressed to near-Fourier-transform-limited pulses through de-chirping technology. The study provides an attractive alternative scheme for generating sub-100 fs ultrafast fiber lasers in the mid-IR region.
Article
Optics
Mengmeng Xu, Yihui Fang, Miao Hu, Shuguo Cheng, Haozhen Li, Meihua Bi, Xuefang Zhou, Chong Liu, Hengfeng Yan, Long Chen
Summary: This study investigates the influence of transverse mode distribution on the self-mode-locked states in an Nd:YVO4 laser with off-axis pumping in a linear concave-plano cavity. By adjusting the off-axis pumping displacement, higher-order transverse modes in the cavity are excited and the dependence of the SML laser's time characteristics on the transverse modes is analyzed. Different transverse mode patterns, including TEM00, TEM00+TEM01+TEM10 superposition, and TEM00+TEM10+TEM20 superposition, are observed in the SML states with varying repetition rates and modulation frequencies.
OPTICS COMMUNICATIONS
(2023)
Article
Engineering, Electrical & Electronic
Honggang Sun, Lixin Wang, Jinhai Zou, Qiujun Ruan, Yu Ding, Chuchu Dong, Zhipeng Dong, Zhengqian Luo
Summary: We report the first visible-wavelength all-fiber passively mode-locked vortex laser, capable of delivering picosecond optical vortex pulses with adjustable pulse duration and narrow linewidth. This study also demonstrates the potential applications of this technology in particle trapping, optical tweezers, and high-resolution microscopy.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2022)
Article
Engineering, Electrical & Electronic
Dan Cheng, Yujun Feng, Meng Ding, Debasis Pal, Johan Nilsson
Summary: We demonstrate that random phase modulation using an intra-cavity electro-optic phase modulator does not inhibit the generation of ultrashort pulses in an erbium-doped fiber ring-laser. The laser is stable and self-starting, even when the phase modulator is driven with sufficiently fast and strong random sequences that render the laser cavity modeless. The lack of phase-sensitive elements in the cavity explains the insensitivity to random phase modulation.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2022)
Article
Engineering, Electrical & Electronic
Leila Graini, Bulend Ortac
Summary: The spatiotemporal dynamics of self-similar parabolic pulse evolution in multimode fibers is investigated in this paper for the first time. It is found that the initial pulse evolves into a linearly chirped pulse with a parabolic intensity shape in both graded-index and step-index MMFs. Additionally, a spatiotemporal nonlinear dynamic of beam auto-selection of one specific mode is investigated through graded-index MMF.
OPTICAL AND QUANTUM ELECTRONICS
(2022)
Article
Optics
W. E. I. Y. U. Fan, Y. U. N. A. O. Han, S. Chen, S. H. U. O. Sun, X. I. A. O. Y. U. Zhao, C. A. I. X. U. N. Bai, G. U. O. M. E. Wang, C. H. E. N. G. Lu, W. E. N. F. E. Zhang, S. H. E. N. G. G. U. Fu, H. U. A. N. I. A. N. Zhang
Summary: As the field of ultrafast photonics continues to advance rapidly, there is a growing demand for high-performance optical modulation devices and soliton lasers capable of evolving multiple soliton pulses. In this study, a saturable absorber based on indium selenide (InSe) nanosheets was prepared and shown to possess excellent modulation depth and saturable absorption intensity. By utilizing dispersion management techniques, various soliton states were achieved, including regular solitons and second-order harmonic mode-locking solitons. The experimental results demonstrate the potential of InSe as an excellent optical modulator.
Article
Engineering, Electrical & Electronic
Hamit Kalayciog, Parviz Elahi, Onder Akcaalan, Fatih Omer Ilday
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS
(2018)
Article
Engineering, Electrical & Electronic
Fatih Omer Ilday, Denizhan Koray Kesim, Martin Hoffmann, Clara Jody Saraceno
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS
(2018)
Article
Chemistry, Multidisciplinary
Ihor Pavlov, Andrey Rybak, Andrii Dobrovolskiy, Viktor Kadan, Ivan Blonskiy, Fatih O. Ilday, Zoya Kazantseva, Igor Gvozdovskyy
Article
Optics
Parviz Elahi, Onder Akcaalan, Cansu Ertek, Koray Eken, F. Omer Ilday, Hamit Kalaycoglu
Article
Materials Science, Multidisciplinary
Viktor Kadan, Svitlana Pavlova, Ihor Pavlov, Hossein Rezaei, Omer Ilday, Ivan Blonskyi
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2018)
Article
Optics
Svitlana Pavlova, Hossein Rezaei, Ihor Pavlov, Hamit Kalaycioglu, Fatih Omer Ilday
APPLIED PHYSICS B-LASERS AND OPTICS
(2018)
Article
Physics, Applied
Cagri Senel, Ramiz Hamid, Cihangir Erdogan, Mehmet Celik, Fatih Omer Ilday
PHYSICAL REVIEW APPLIED
(2018)
Article
Optics
Ghaith Makey, Ozgun Yavuz, Denizhan K. Kesim, Ahmet Turnali, Parviz Elahi, Serim Ilday, Onur Tokel, F. Omer Ilday
Article
Multidisciplinary Sciences
Fatemeh Kalantarifard, Parviz Elahi, Ghaith Makey, Onofrio M. Marago, F. Omer Ilday, Giovanni Volpe
NATURE COMMUNICATIONS
(2019)
News Item
Physics, Multidisciplinary
F. Omer Ilday
Article
Physics, Multidisciplinary
Ghaith Makey, Sezin Galioglu, Roujin Ghaffaril, E. Doruk Engin, Gokhan Yildirim, Ozgun Yavuz, Onurcan Bektas, U. Seleme Nizam, Ozge Akbulut, Ozgur Sahin, Kivanc Gungor, Didem Dede, H. Volkan Demir, F. Omer Ilday, Serim Ilday
Review
Optics
Maxime Chambonneau, David Grojo, Onur Tokel, Fatih Omer Ilday, Stelios Tzortzakis, Stefan Nolte
Summary: The article reviews the physical mechanisms inhibiting sufficient energy deposition inside silicon with femtosecond laser pulses, as well as the strategies established so far for bypassing these limitations. These solutions have allowed addressing numerous applications by employing longer pulses, femtosecond-pulse trains, and surface-seeded bulk modifications.
LASER & PHOTONICS REVIEWS
(2021)
Proceedings Paper
Engineering, Electrical & Electronic
F. Omer Ilday
INTERNATIONAL CONFERENCE LASER OPTICS 2020 (ICLO 2020)
(2020)
Proceedings Paper
Chemistry, Physical
Xiaomin Liu, Jesper Laegsgaard, Roman Iegorov, Ask Svane, F. Omer Ilday, Haohua Tu, Stephen A. Boppart, Dmitry Turchinovich
XXI INTERNATIONAL CONFERENCE ON ULTRAFAST PHENOMENA 2018 (UP 2018)
(2019)
Article
Chemistry, Multidisciplinary
Evgeniya Kovalska, Ihor Pavlov, Petro Deminskyi, Anna Baldycheva, F. Omer Ilday, Coskun Kocabas