Article
Optics
Pengpeng Wang, Cunguang Zhu, Yongjie Sun, Yuli Zhao
Summary: Alpha-Fe2O3 nanosheets embedded in PVA films exhibit potential applications in nonlinear optics, particularly as thin-film saturable absorbers. In erbium doped fiber lasers based on Alpha-Fe2O3-PVA SAs, stable mode-locked operations are achieved, showcasing the excellent candidacy of Alpha-Fe2O3 nanosheets as two-dimensional saturable absorption materials.
OPTICS AND LASER TECHNOLOGY
(2021)
Article
Optics
Jinhwa Gene, Dong-Il Yeom, Seung Kwan Kim, Sun Do Lim
Summary: The study introduces a high-energy, low-frequency 2-micron femtosecond fiber laser designed for laser surgery and vehicle laser detection and ranging applications. The laser, incorporating thulium-doped fiber gains and hybrid mode-locking techniques, achieved the highest pulse energy and lowest pulse rate reported to date, with pulse duration and output optical spectrum characteristics also evaluated for stability over extended periods.
OPTICS AND LASER TECHNOLOGY
(2021)
Article
Optics
Huijie Li, Xingliang Li, Shumin Zhang, Dan Yan, Chaoran Wang, Zhenjun Yang, Zhaoguang Pang
Summary: We present a wavelength-tunable spatiotemporal mode-locked (STML) fiber laser based on nonlinear polarization rotation (NPR). By utilizing the saturable absorption and tunable filtering effect of NPR, both multimode continuous wave (MM CW) and fundamental spatiotemporal dissipative soliton pulse and its harmonic mode-locking (HML) can be adjusted in wavelength with a maximum range of 39 nm by simply adjusting the waveplates. The laser achieves maximum output powers of 42.2 mW, 115.3 mW, 164.2 mW, and 151.5 mW for MM CW, fundamental, 2nd, and 3rd order HML spatiotemporal dissipative solitons, respectively. This work provides a new platform for exploring wavelength-tunable STML fiber lasers.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Optics
Jacek Swiderski, Pawel Grzes
Summary: High-power supercontinuum generation was demonstrated in step-index fluoroindate (InF3) and chalcogenide (As2S3) fibers, with output average power of 2.95 W in InF3 fiber and 440 mW in As2S3 fiber extending up to 4.17 μm. By cascading the system, the spectrum was extended up to 5.58 μm. The flat spectrum and high-output power indicate the potential of these sources for various applications.
OPTICS AND LASER TECHNOLOGY
(2021)
Article
Optics
Qiujun Ruan, Xiaosheng Xiao, Jinhai Zou, Hang Wang, Shuzheng Fan, Tianran Li, Jin Li, Zhipeng Dong, Zhiping Cai, Zhengqian Luo
Summary: This paper reports a fiber laser capable of spatiotemporal mode-locking (STML) at visible wavelengths, demonstrating its stability and narrow pulse duration through theoretical prediction and experimental realization. The locking of transverse and longitudinal modes is also illustrated, and the power is further boosted by establishing an ultrafast fiber amplifier.
LASER & PHOTONICS REVIEWS
(2022)
Article
Engineering, Electrical & Electronic
Inaki Aporta, Maria Angeles Quintela, Jose Miguel Lopez-Higuera
Summary: The broadband continuously tunable SESAM all-fiber laser based on optical parametric generation (OPG) is ideal for CARS imaging applications, featuring high environmental stability and a wide wavelength range. The pump and signal pulses overlap spatially and temporally, ensuring high-quality signal generation. Additionally, the laser source offers a frequency conversion range suitable for bio-imaging applications, with a compact, simple, robust and easy-to-handle design.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Engineering, Electrical & Electronic
Yi Huang, Si Lv, Linping Teng, Longtao Wang, Jiafeng Lu, Jiangtao Xu, Xianglong Zeng
Summary: This study introduced two types of high-order mode-locked fiber lasers using few-mode saturable absorbers, comparing the nonlinear saturation absorption characteristics of different modes and exploring the direct HOM oscillation.
IEEE PHOTONICS JOURNAL
(2021)
Article
Engineering, Electrical & Electronic
Xu-Bin Lin, Yu-Xin Gao, Jin-Gan Long, Jia-Wen Wu, Wei-Yi Hong, Hu Cui, Zhi-Chao Luo, Wen-Cheng Xu, Ai-Ping Luo
Summary: This study introduces an all few-mode fiber figure-eight laser STML by a nonlinear amplifying loop mirror at 1.0 μm, capable of generating single and multiple pulses at different central wavelengths. Various types of bound-state solitons were also achieved, contributing to a better understanding of the nonlinear characteristics of STML fiber lasers and their potential applications in optical communications.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Optics
Ying'an Chen, Yicheng Zhou, Zhipeng Qin, Guoqiang Xie, Peng Yuan, Jingui Ma, Liejia Qian
Summary: This paper demonstrates the first experimental realization of a spatiotemporally mode-locked soliton laser in mid-infrared fluoride fiber, achieving a record pulse energy of 16.1 nJ and peak power of 74.6 kW at 2.8 mu m wavelength. This work extends the spatiotemporal mode-locking to soliton fiber lasers and should be of wide interest for the laser community.
HIGH POWER LASER SCIENCE AND ENGINEERING
(2023)
Article
Optics
Kaifeng Wang, Xiao Li, Peng Wang, Weihong Hua, Zefeng Wang, Kai Han
Summary: This research report presents the generation of broadband continuous-wave mid-infrared laser based on an OPO pumped by an ASE fiber source. By injecting a high-power and narrow linewidth fiber laser into a nonlinear crystal, phase-matching DFG can be achieved at a low pumping threshold. The results show that intracavity DFG can effectively generate a stable broadband mid-infrared laser during the down-conversion of the ASE fiber source.
Article
Engineering, Electrical & Electronic
Xing Luo, Yating Tang, Fanlong Dong, Jiachen Wang, Linpeng Yu, Peiguang Yan, Jinzhang Wang, Zhijian Zheng, Qitao Lue, Chunyu Guo, Shuangchen Ruan
Summary: This study demonstrates the generation of broadband mid-infrared supercontinuum at room temperature using an ultralow repetition rate noise-like pulse mode-locked fiber laser. By inserting a standard single mode fiber and a dispersion compensation fiber into the long laser cavity of a Tm-doped fiber laser, mode-locked noise-like pulses with a repetition rate of approximately 190 kHz are obtained. The amplified noise-like pulse is then used to pump a highly nonlinear indium fluoride fiber, resulting in a flat mid-infrared supercontinuum with a coverage range from approximately 1500 nm to 4100 nm. The all-fiber mid-infrared supercontinuum laser source has a simple architecture and low cost. The study highlights the advantages of ultra-low repetition rate noise-like pulses in mid-infrared supercontinuum generation.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2022)
Article
Optics
Chao Liu, Guoru Li, Yiran Wang, Xiancui Su, Yiyan Xie, Feilong Gao, Santosh Kumar, Bingyuan Zhang
Summary: Vanadium carbide (V2C) has been predicted to be an excellent nonlinear optical material. Few-layer V2CTx nanosheets were synthesized and found to exhibit strong nonlinearities. A microfiber-based few-layer V2CTx saturable absorber (SA) was fabricated and successfully used for stable mode-locked operation in fiber lasers.
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)
Review
Nanoscience & Nanotechnology
Rui Zhu, Yaoyao Qi, Jianfei Meng
Summary: Compared to continuous wave lasers, ultrafast lasers have the advantages of ultra-short pulse width and ultra-high peak power, making them widely used in various fields. Nanomaterials, particularly carbon nanotubes and graphene, have exhibited extraordinary characteristics in ultrafast photonics and have become the most commonly used saturable absorbers. Research on their nonlinear optical properties, integration strategies, and applications in the field of ultrafast photonics has progressed rapidly.
Article
Optics
Takuma Nakamura, Venkata Ramaiah Badarla, Kazuki Hashimoto, Peter G. Schunemann, Takuro Ideguchi
Summary: This work demonstrates a simple and robust method of 1-mu m-pumped broadband IDFG for generating MIR pulses in the fingerprint region. The system also enables additional generations of ultrashort pulses in the ultraviolet and visible regions, showing potential for applications such as high-repetition-rate vibrational sum-frequency generation spectroscopy or pump-probe spectroscopy.
