Article
Chemistry, Multidisciplinary
Qing Wu, Si Chen, Wenli Bao, Haibin Wu
Summary: This study reports the application of saturable absorbers prepared from graphdiyne-modified tapered fibers to an erbium-doped fiber laser for achieving femtosecond pulse output. Graphdiyne quantum dots were successfully prepared using the Glaser-Hay method. The graphdiyne-based all-fiber saturable absorber device exhibited strong saturable absorption characteristics and successfully generated femtosecond pulses. This work lays the foundation for the application of the nonlinear optical material, graphdiyne, in ultrafast photonics.
Article
Chemistry, Physical
Phuong Thi Nguyen, Jina Jang, Yoonjae Lee, Seung Tae Choi, Jung Bin In
Summary: Fiber supercapacitors with enhanced performance and flexibility were successfully fabricated using a laser-assisted method, integrating active electrodes, current collectors, and polymer support into a monofilament structure. The use of laser patterning enabled the creation of highly conductive layers, leading to reduced equivalent series resistance and increased specific capacitance. This unconventional structure for fiber supercapacitors shows great potential for flexible and wearable electronics applications.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Optics
Junyu Qian, Pengfei Wang, Yujie Peng, Yanyan Li, Beijie Shao, Hongpeng Su, Xinlin Lv, Ding Wang, Yuxin Leng, Ruxin Li
Summary: This study demonstrates the generation of high-peak-power, few-cycle mid-infrared pulses using coherent beam combination and nonlinear pulse compression techniques. By combining pulses coherently and expanding bandwidth, it is possible to obtain ultra-short laser pulses with higher peak power.
PHOTONICS RESEARCH
(2021)
Article
Engineering, Electrical & Electronic
Yinbin He, Mengxian Li, Yiqing Shu, Qiuyi Ning, Weicheng Chen, Aiping Luo
Summary: By adjusting the polarization controllers, h-shaped pulses and spikes can be generated in a fiber laser with a Fabry-Perot subcavity. The F-P filtering plays a crucial role in shaping these pulses, with different filtering profiles leading to different pulse characteristics.
OPTICAL FIBER TECHNOLOGY
(2021)
Article
Optics
Changjun Quan, Zeqiu Hu, Duanduan Wu, Rongping Wang, Shixun Dai, Qiuhua Nie
Summary: A high-energy 1666 nm short-pulse Raman fiber laser based on a gain-switching scheme has been reported, achieving high performance and low cost by carefully selecting parameters.
OPTICS AND LASER TECHNOLOGY
(2021)
Article
Energy & Fuels
Youngseok Lee, Jeong-Hyun Woo, Keonhee Kim, Kyeong Seok Lee, Yeonjoo Jeong, Jaewook Kim, Gyu Weon Hwang, Doh-Kwon Lee, Ju-Young Kim, Inho Kim
Summary: Ultrathin crystalline Si wafers, which are more flexible than conventional ones, can be applied to curved surfaces for various applications. To compensate for the reduced thickness, surface texturing is a common approach, but it deteriorates mechanical flexibility. This study proposes a laser-assisted nanotexturing process to enhance flexibility while maintaining light-trapping performances.
Article
Optics
Mengqiu Sun, Xude Wang, Simin Yang, Jieyu Pan, Xu Geng, Kaixin Li, Mengxiang Lu, Shuguang Miao, Suwen Li
Summary: We report on the observation of quasi-trapezoid noise-like pulses (NLPs) in a fiber laser with a large anomalous dispersion regime based on nonlinear polarization rotation. Stable high-order harmonics are obtained by regulating the pump power and polarization state.
Article
Optics
Kun Guo, Chao Fan, Qiang Yu, Jin Wang, Haiqin Deng, Tao Wang, Fangqi Liu, Xianguang Ding, Zhenghui Pan, Sicong Zhu, Jie Yang, Qinglin Zhang, Jian Wu, Pu Zhou, Zongfu Jiang
Summary: Ultrafast photonics has become an interdisciplinary field due to the development of compact and efficient ultrafast pulse generation. A simplified fabrication process of PbS saturable absorbers (PbS-SAs) was achieved using high-quality PbS nanoflakes synthesized by physical vapor deposition. A time-domain flexible fiber pulse laser system with high output power was demonstrated based on the PbS-SAs. This research not only provides a simple manufacturing process for uniform SAs devices, but also improves output power for exploring the unique properties of nanocomposite SAs in photonic applications.
OPTICS COMMUNICATIONS
(2023)
Article
Optics
Mengxian Li, Yiqing Shu, Lin Gu, Zhengwei Cui, Aiping Luo, Yongyao Li, Weicheng Chen
Summary: The experimental results demonstrate the generation of a modulated comb-like pulse distribution from a fiber laser with an intracavity Sagnac interferometer, with the ability to adjust the bunch profiles by manipulating pump power and polarization settings. The theoretical model developed accurately predicts the transient generation process of the pulse bunch, showing that the results are in line with experimental findings. This marks the first theoretical and experimental proof of the modulated comb-like pulse distribution being a result of intracavity Sagnac filtering, with potential applications in laser measuring and information processing.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Optics
Chun Wang, Bing Chang, Teng Tan, Chenye Qin, Zhaohui Wu, Guofeng Yan, Bo Fu, Yu Wu, Yunjiang Rao, Handing Xia, Baicheng Yao
Summary: This paper investigates the generation of high-energy femtosecond laser combs using the characteristics of optical solitons emitting Kelly-sidebands. By utilizing intracavity Kelly radiations and third-order nonlinearities, a supercontinuum spectrum is obtained by merging the soliton envelope and Kelly-sidebands through four-wave mixing. The study not only demonstrates a non-trivial frequency-time evolution but also offers a new opportunity for the development of compact fiber frequency combs for frequency metrology or spectroscopy.
Article
Materials Science, Multidisciplinary
Joel M. Serrano, Glenn A. Spiering, Zhen Xu, Zacary Croft, Dong Guo, Ke Cao, Robert B. Moore, Guoliang Liu
Summary: This study explores the influence of relative humidity on the morphology of polyacrylonitrile fibers, which in turn affects the flexibility and electrochemical properties of porous carbon fibers. PCFs prepared using the VIPS method exhibit a core-sheath structure and demonstrate good capacitance and mechanical strength in flexible capacitor assemblies.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Optics
Jia-Min Jiang, Xuan-Juan Chen, Yu-Xin Gao, Meng Liu, Zhen-Ao Bai, Ai-Ping Luo, Wen-Cheng Xu, Zhi-Chao Luo
Summary: A bidirectional high-repetition-rate ultrafast fiber ring laser was proposed based on the dissipative four-wave mixing mode-locked technique, capable of generating 100 GHz and 30 GHz pulses in different directions and allowing for single-waveband tunable and dual-waveband switchable operations. This compact and flexible laser design holds potential applications in optical communications and sensing.
OPTICS AND LASER TECHNOLOGY
(2021)
Article
Instruments & Instrumentation
A. R. Muhammad, M. F. Rusdi, A. A. A. Jafry, A. M. Markom, Z. Jusoh, H. Haris, S. W. Harun, P. Yupapin
Summary: The paper introduces a new fiber-based saturable absorber using silver nanoparticles, achieving stable pulse train output of ultrafast pulses.
INFRARED PHYSICS & TECHNOLOGY
(2021)
Review
Optics
Bai-Ou Guan, Long Jin, Jun Ma, Yizhi Liang, Xue Bai
Summary: Photoacoustic imaging (PAI) technology has been developed to achieve multiscale imaging of biological samples using a flexible fiber-laser ultrasound sensor (FUS) based on optical fibers. The FUS allows for tuning of spatial ultrasound responses by bending the fiber laser, enabling wide-view optical-resolution photoacoustic microscopy and photoacoustic computed tomography at different depths. Compared to traditional rigid piezoelectric transducers, the flexible FUS provides the flexibility to design various multiscale PAI modalities.
OPTO-ELECTRONIC ADVANCES
(2021)
Article
Optics
Xiaohui Li, Xiwei Huang, Chenxi Zhang, Xiaoxiao Guo, Xiaotian Weilian, Xiaohan Yang
Summary: This study presents an ultra-long erbium-doped fiber laser based on hydrazone organisms that can generate a tunable h-shaped pulse. By changing the polarization state in the cavity, nanosecond pulses can be converted into h-shaped pulses, and the pulse trailing edge can be tuned by increasing the pump power.
OPTICS AND LASER TECHNOLOGY
(2024)