Article
Engineering, Electrical & Electronic
Shurong Jiang, Chen Wei, Le Zheng, H. Zhou, W. Liu, J. Zhang, H. Zhang, Yong Liu
Summary: We report a transition metal dichalcogenides-PtSe2 Q-switched single-mode fiber laser operating at 2783.2 nm with a nearly watt-level average output power. By incorporating a PtSe2 coated mirror as a saturable absorber, stable Q-switched laser pulses were obtained with high average power and pulse energy. The operating wavelength range of the PtSe2-coated mirror was also investigated using a plane ruled grating.
IEEE PHOTONICS TECHNOLOGY LETTERS
(2022)
Article
Engineering, Electrical & Electronic
Qinwen Duan, Lingling Yang, Yuan He, Longlong Chen, Jie Li, Lili Miao, Chujun Zhao
Summary: The stable Q-switched Er-doped fluoride fiber laser was demonstrated with the few-layered Ta2NiS5 in the mid-infrared spectral range, showing great potential for broadband optoelectronic devices. Ta2NiS5 exhibited saturable absorption behavior and could deliver stable Q-switched pulses with specific parameters, paving the way for its application as a saturable absorber in mid-infrared regions.
IEEE PHOTONICS JOURNAL
(2021)
Article
Optics
Wei Huang, Zhiyue Zhou, Yulong Cui, Hao Li, Wenxi Pei, Meng Wang, Zefeng Wang, Jinbao Chen
Summary: We present the characteristics of a continuous wave high-power mid-infrared light source based on acetylene-filled anti-resonant hollow-core fiber. A maximum power of 4.5W at 3.1μm is achieved at the optimal gas pressure of 3mbar, which is the highest output power reported for mid-IR HCF lasers to date. This work demonstrates the great potential of fiber gas lasers for high-power output in the mid-IR.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Engineering, Electrical & Electronic
Liqiang Zhou, Chen Wei, Dongsheng Wang, Hao Chi, Le Zheng, Shurong Jiang, Han Zhang, Hua Huang, Yong Liu
Summary: Researchers have developed a wavelength-tunable high-repetition-rate passively Q-switched fluoride fiber laser using Ti3C2Tx MXene as a saturable absorber. By introducing Ti3C2Tx SA into a Ho3+/Pr3+-cixloped fluoride fiber, stable Q-switched pulses with a continuously tuning range were achieved. The compact mid-infrared Q-switched laser source with a high repetition rate has significant importance in applications such as medicine and remote sensing.
IEEE PHOTONICS TECHNOLOGY LETTERS
(2021)
Article
Engineering, Electrical & Electronic
Lukasz Sojka, Lukasz Pajewski, Samir Lamrini, Mark Farries, Trevor M. Benson, Angela B. Seddon, Slawomir Sujecki
Summary: This study presents a practical realization of a diode-pumped actively Q-switched Er3+-doped fluoride fiber laser operating near 2.78 μm. The laser demonstrates stable 26 ns pulses with an energy of 330 μJ and peak power of 12.7 kW at a repetition rate of 100 Hz. The laser performance is evaluated against variations in pump power, repetition rate, and active fiber length.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Optics
Zhiqiang Fang, Chunxiang Zhang, Jun Liu, Yu Chen, Dianyuan Fan
Summary: By utilizing an InAs-based SESAM, a 3.46 μm passively Q-switched Er3+:ZBLAN fiber laser was demonstrated with the introduction of an ASE-seeded 1973 nm pump source for enhanced temporal stability. Stable pulse trains at 3.46 μm were achieved with a maximum repetition rate of 58.71 kHz. The results indicate the potential of commercial SESAMs to extend operation wavelength to beyond 3.0 μm in the mid-infrared region.
OPTICS AND LASER TECHNOLOGY
(2021)
Article
Engineering, Electrical & Electronic
Tingting Chen, Jin Li, Jinliang Yuan, Xin Zhou, Yu Ding, Lixin Wang, Jinhai Zou, Qingyuan Li, Qiujun Ruan, Hang Wang, Jinfen Hong, Yikun Bu, Zhengqian Luo
Summary: This report presents the use of highly resistant dielectric-coated fiber mirrors in watt-level mid-IR Dy3+- and Er3+-doped all-fiber lasers. The specially designed fiber pigtail mirror allows for efficient dichroic operation and exhibits high damage density, making it suitable for high-power mid-IR laser operation. A Ta2O5 monolayer protective film is used to mitigate fiber tip photodegradation. The compact all-fiber mid-IR cavities are formed by connecting the Dy3+- and Er3+-doped ZBLAN gain fibers with dielectric-coated fiber mirrors. The achieved maximum output powers and slope efficiencies are reported for both Dy3+ and Er3+ lasers.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2023)
Article
Instruments & Instrumentation
Xingbin Wei, Zhengyi Liu, Song Zhang, Xianlin Ye, Huaijin Ren, Weimin Wang, Yingchen Wu, Mi Li
Summary: A high-efficiency and actively Q-switched Tm:YLF laser was presented in this paper, achieving a slope efficiency of 74.7% and an output power of 12.41 W in continuous-wave operation. By using a volume Bragg grating (VBG) as the output coupler and wavelength selector, the laser produced an output power of 10.65 W and a slope efficiency of 67.3% at 1.908 μm. The laser demonstrated high stability with a power fluctuation of 0.45% and central wavelength variation of 0.23 nm during continuous testing. In pulsed operation at 10 kHz, the laser achieved an average power of 10.07 W and a slope efficiency of 66.0%. This actively Q-switched Tm:YLF laser of 10-W level will serve as an ideal pump source for practical applications of compact and high-efficiency mid-infrared optical parametrical oscillators.
INFRARED PHYSICS & TECHNOLOGY
(2023)
Article
Engineering, Electrical & Electronic
Peng Wang, Xiao Li, Kaifeng Wang, Xiaojun Xu
Summary: Efficient pulsed mid-infrared generation was achieved through intracavity difference frequency mixing in a CW PPLN OPO, demonstrating potential for frequency conversion of low-power laser sources.
IEEE PHOTONICS JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Kaifeng Wang, Xiao Li, Peng Wang, Meng Wang, Weihong Hua, Kai Han, Zefeng Wang
Summary: A double-peaked mid-infrared laser was generated using intracavity difference frequency generation, achieving a tunable double-peaked spacing and controllable peak width. It has high potential for gas molecule monitoring and absorption.
APPLIED SCIENCES-BASEL
(2022)
Article
Optics
Monica T. Kalichevsky-Dong, Wenping Ge, Thomas W. Hawkins, Turghun Matniyaz, Liang Dong
Summary: High pulse energy was achieved using an ytterbium-doped fiber in a single-mode Q-switched fiber laser, demonstrating record efficiency and feasibility. The laser also produced shorter pulses with high M-2 values below 1.3.
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
Optics
Yanqiu Du, Baoquan Yao, Tongyu Dai, Xiaojie Chen, ChunYu Shang
Summary: A Tm,Ho:YVO4 laser with compact geometry was demonstrated and analyzed in this study, achieving a slope efficiency of 30.5% for continuous wave operation and 19.3% for passively Q-switched mode with a Cr:ZnS saturable absorber. The pulse energy was consistent at around 130 μJ regardless of pump power, and the pulse repetition rate varied linearly from 2.9 kHz to 6.8 kHz as pump power increased. The Q-switch efficiency reached up to 58% at maximum pump power.
Article
Optics
Junna Yao, Xinhua Jiang, Anting Wang, Jinghao Wang, Ruishan Chen, Jialang Zhang, Qiwen Zhan
Summary: A novel erbium-doped Q-switched fiber laser at 1.5 mu m with Fe3O4 nanoparticles as a saturable absorber is experimentally demonstrated, showing stable laser output, high saturable intensity and maximum single pulse energy. The laser operates with a maximum repetition rate of 57.5 kHz, a minimum pulse width of 5.7 mu s and a pump threshold of 50 mW.
Article
Engineering, Electrical & Electronic
Yulong Cui, Zefeng Wang, Zhiyue Zhou, Wei Huang, Hao Li, Meng Wang, Shoufei Gao, Yingying Wang
Summary: Soft-glass fiber lasers have attracted significant attention due to their potential for compact, stable, and highly efficient mid-infrared emission. However, the immature manufacturing technique of soft glass fibers and limited types of doped rear-earth have restricted power enhancement and wavelength expansion. This study demonstrates the use of gas-filled hollow-core fibers to achieve high-power, tunable mid-infrared fiber gas lasers.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2022)
