Article
Instruments & Instrumentation
M. H. M. Ahmed, S. A. Sadeq, N. Mohd Yusoff, N. H. Zainol Abidin, M. T. Alresheedi, A. F. Abas, Z. A. Talib, M. A. Mahdi
Summary: This investigation explores the potential use of graded-index multimode fiber in a nonlinear absorbing loop mirror as an artificial saturable absorber for ultrashort pulse generation. The proposed saturable absorber, based on nonlinear phase shift and multimodal interference, demonstrates immense prospects in generating stable ultrashort pulse in the 2 mu m region due to its simplicity.
INFRARED PHYSICS & TECHNOLOGY
(2022)
Article
Optics
N. M. Jin, D. N. Wang, S. L. Cai, Y. Q. Peng, H. F. Chen
Summary: In this paper, a passively mode-locked erbium-doped fiber laser with a saturable absorber (SA) based on a tapered graded-index multimode fiber with zinc oxide coating is proposed and demonstrated. The device also serves as a platform for generating various types of solitons outputs. Conventional solitons with specific characteristics are generated at a certain repetition frequency, while adjusting the polarization controller and increasing pump power allows the generation of tightly and loosely bound solitons, as well as two-fold solitons. The SA used in this device is easy to fabricate, highly stable in operation, and contributes to the exploration of multi-soliton complexes.
LASER PHYSICS LETTERS
(2023)
Article
Optics
Pei Zhang, Kaharudin Dimyati, Bilal Nizamani, Mustafa M. Najm, Moh Yasin, Sulaiman Wadi Harun
Summary: This study demonstrates the generation of ultrashort pulses in an all-fiber Erbium-doped fiber laser cavity using a doped fiber saturable absorber. The experimental results show that utilizing the saturable absorber can achieve stable mode-locked pulse trains with the potential for power enhancement.
OPTICS AND LASER TECHNOLOGY
(2022)
Review
Optics
K. Y. Lau, D. Hou
Summary: This paper comprehensively reviews the use of material-based saturable absorbers in mode-locked fiber lasers, discussing advantages and challenges in areas such as material synthesis techniques, characteristics, composite materials, structure design, and deposition techniques. Concrete recommendations are provided to address current issues and challenges, aiming to contribute to further development in this field.
OPTICS AND LASER TECHNOLOGY
(2021)
Article
Optics
Si Chen, Yanjuan Wang, Fuhao Yang, Mingxiao Zhu, Shuo Sun, Zhiqi Sui, Zhifeng Hong, Yunao Han, Cheng Lu, Guomei Wang, Huanian Zhang, Xiaohan Chen, Wenfei Zhang, Shenggui Fu
Summary: A Pb3Sn4FeSb2S14-polyvinyl alcohol film was prepared using the liquid phase exfoliation method and its nonlinear optical properties were studied. The film was used as a saturable absorber in an Er-doped fiber laser, enabling easy generation of large-energy mode-locked pulses.
Article
Engineering, Electrical & Electronic
Mustafa Mohammed Najm, Sulaiman Wadi Harun, Sameer Salam, Hamzah Arof, B. Nizamani, M. Yasin
Summary: In this study, a thin-film saturable absorber based on 8-Hydroxyquinolino cadmium chloride hydrate material was experimentally used as a Q-switcher and mode-locker in an erbium-doped fiber laser cavity. Nanosecond and picosecond pulses were generated passively in the cavity, with the Q-switched laser producing pulses with specific parameters and the mode-locked laser producing pulses with different characteristics.
OPTICAL FIBER TECHNOLOGY
(2021)
Article
Physics, Multidisciplinary
Si-Yu Chen, Hai-Qin Deng, Wan-Ru Zhang, Yong-Ping Dai, Tao Wang, Qiang Yu, Can Li, Man Jiang, Rong-Tao Su, Jian Wu, Pu Zhou
Summary: We present a single-frequency linearly polarized Q-switched fiber laser using an Nb2GeTe4 saturable absorber (SA). The Nb2GeTe4 SA enables passive Q-switching of the laser, while an unpumped Yb-doped fiber combined with a 0.08-nm-bandwidth polarization-maintaining fiber Bragg grating (FBG) acts as an ultra-narrow bandwidth filter for single-longitudinal-mode (SLM) oscillation. All devices in the laser are kept polarized to ensure linearly polarized laser output. Stable SLM linearly polarized Q-switching operation at 1064.6 nm is achieved, resulting in a laser with a shortest pulse width of 1.36 μs, a linewidth of 28.4 MHz, a repetition rate of 28.3 kHz-95.9 kHz, and a polarization extinction ratio of about 30 dB. The single-frequency linearly polarized pulsed fiber laser studied in this paper has significant application value in gravitational wave detection, beam combining, nonlinear frequency conversion, and other fields.
Article
Optics
Xinxin Jin, Wenli Bao, Han Zhang, Zheng Zheng, Meng Zhang
Summary: In this study, four-wave mixing (FWM) in graphdiyne (GDY) microfiber is demonstrated using synchronized dual-wavelength pump pulses obtained from a mode-locked fiber laser. The large nonlinear refractive index of GDY and the synchronized pump pulses contribute to a high conversion efficiency, which has potential applications in measuring the nonlinear coefficient gamma of nanomaterials-based devices.
PHOTONICS RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Arni Munira Markom, Nurul Athirah Mohamad Abdul Ghafar, Malathy Batumalay, Yusrina Yusof, Ahmad Haziq Aiman Rosol, Nur Farhanah Zulkipli, Ahmad Razif Muhammad, Hazlihan Haris, Ismail Saad, Sulaiman Wadi Harun
Summary: We developed an erbium-doped fiber-based saturable absorber (SA) using niobium aluminium carbide (Nb2AlC) nanomaterial, which can generate stable mode-locked pulses. The SA was fabricated with polyvinyl alcohol (PVA) and the Nb2AlC nanomaterial, producing pulses operating at 1530 nm with a repetition rate of 1 MHz and pulse width of 6.375 ps. A peak pulse energy of 7.43 nJ was achieved at 175.87 mW pump power. This study not only provides design suggestions for SAs based on MAX phase materials but also demonstrates the great potential of MAX phase materials for generating ultra-short laser pulses.
Article
Chemistry, Multidisciplinary
Ruyi Sun, Linguang Guo, Xinxin Shang, Huanian Zhang, Qingyang Yue
Summary: A ferromagnetic insulator Cr2Ge2Te6 was fabricated and utilized as a saturable absorber in an Er-doped fiber laser. The experimental results demonstrated that Cr2Ge2Te6 exhibits outstanding nonlinear absorption properties and can generate stable pulses.
Article
Biochemistry & Molecular Biology
Qiongyu Hu, Xiaohan Chen, Ming Li, Ping Li, Liwei Xu, Haoxu Zhao, Bin Zhang, Jing Liu, Kejian Yang
Summary: In this study, antimony trisulfide was successfully prepared and embedded into polyvinyl alcohol as a saturable absorber in a passively mode-locked Er-doped fiber laser. The results showed that the Sb2S3-PVA SA exhibited excellent stability and performance, indicating promising potentials in ultrafast all-fiber lasers.
Article
Physics, Multidisciplinary
Shang-En Hsieh, Lan-Yin Chen, Ching-Hsuan Hsu, Yu-Ting Lai, Chien-Hung Yeh, Syu-Yang Jiang, Shien-Kuei Liaw, Chi-Wai Chow
Summary: This article presents an experimental demonstration of a stable and tunable single-longitudinal-mode (SLM) wavelength output technique using an erbium-doped fiber (EDF) laser with two fiber ring architecture and unpumped EDF-based saturable absorber (SA). The results show that the fiber laser has good optical signal-to-noise ratio (OSNR), wavelength linewidth, output stability, and power control capability within the available tuning bandwidth. Moreover, this laser configuration also enables uniform power distribution within a given range.
Article
Optics
M. H. M. Ahmed, W. A. Khaleel, S. A. Sadeq, M. A. W. Abdul Hadi, N. H. Zainol Abidin, M. A. Mahdi
Summary: The stable mode-locked thulium-doped fiber laser (TDFL) using tungsten trioxide (WO3) as a passive saturable absorber on a microfiber demonstrated excellent output parameters and signal-to-noise ratio. The findings suggest that WO3 could be a promising candidate material for saturable absorbers in mid-infrared fiber laser modelocking.
OPTICS AND LASER TECHNOLOGY
(2021)
Review
Optics
Yani Zhang, Kexin Wu, Zhe Guang, Bo Guo, Dun Qiao, Zhiyi Wei, Hongyan Yang, Qiuyang Wang, Kang Li, Nigel Copner, Xiaohui Li
Summary: This paper presents a comprehensive review of recent progress on 2-4 μm mid-infrared ultrafast fiber lasers, including their mode-locking mechanisms, gain media, and system performance. The review focuses on the use of 2D material passive mode-locking for generating ultrafast pulses in this wavelength range. Additionally, the paper explores novel advances in mode-locking and gain fibers of mid-IR ultrafast fiber lasers, and discusses the current and prospective applications of such laser systems.
LASER & PHOTONICS REVIEWS
(2023)
Article
Mathematics, Interdisciplinary Applications
Jaspreet Kaur Nagi, Soumendu Jana
Summary: In this study, we theoretically generate broadband cavity solitons by replacing the conventional semiconductor saturable absorber with a graphene saturable absorber in a microcavity, significantly lowering the required feedback strength and threshold pump power. The high nonlinearity and easy integration of graphene make it a step towards an on-chip cavity soliton generator.
CHAOS SOLITONS & FRACTALS
(2022)
