Article
Optics
Xiaoming Duan, Jiaze Wu, Yu Ding, Xiaotao Yang, Tongyu Dai
Summary: In this paper, a continuous-wave and electro-optically (EO) Q-switched Ho-doped lutetium vanadate (Ho:LuVO4) laser, dual end-pumped by two laser diodes at 1.94 μm, is reported. The continuous-wave regime achieved a maximum output power of 18.8 W at 2058.1 nm, with a slope efficiency of 54.1% relative to the absorbed pump power of 44.7 W. By using a langasite (La3Ga5SiO14, LGS) crystal as the EO Q-switch, the EO Q-switched Ho:LuVO4 laser produced a maximum pulse energy of 3.2 mJ and a minimum pulse width of 8.9 ns at a pulse repetition frequency of 3 kHz, resulting in a peak power of 358.8 kW.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Optics
Guanghua Liu, Ruijun Lan, Penghua Mu, Yingjie Shen, Bin Zhao
Summary: A passively Q-switched Yb3+:LuYLaVO4 laser based on a GaAs saturable absorber is reported in this paper. The saturable absorption property of GaAs was studied and the performance parameters of the laser were measured. The results showed significant improvements in pulse repetition rate, pulse width, single pulse energy, and pulse peak power compared with previous lasers.
OPTICS COMMUNICATIONS
(2022)
Article
Optics
Shuhui Lv, Congcong Gao, Zhen Tian, Xiancui Su, Guoju Wang, Guo Zhu, Beibei Wang, Santosh Kumar, Xiaodong Xu, Haijuan Yu, Xuechun Lin, Jun Xu, Bingyuan Zhang
Summary: This paper demonstrated a continuous-wave dual-wavelength Yb:LuYAG laser that operates at 1029.41 and 1047.16 nm simultaneously, with the laser operation state adjusted continuously by changing the angle of the cavity mirror. Additionally, passive Q-switched operation was achieved at 1028.99 nm using a MoS2 saturable absorber, with pulse duration and maximum repetition rate of 293 ns and 251.27 kHz, respectively.
OPTICS COMMUNICATIONS
(2021)
Article
Materials Science, Multidisciplinary
Chunyun Su, Yizhou Liu, Tianli Feng, Wenchao Qiao, Yuefeng Zhao, Yangyang Liang, Tao Li
Summary: In this study, MXene Ti3C2Tx nanosheets were prepared using a diffusion method and utilized as a saturable absorber in a diode-pumped passively Q-switched Er:Lu2O3 laser. The laser achieved an average output power of 1.13 W with a pulse duration of 187.89 ns, repetition rate of 149.16 kHz, and pulse energy of 7.6 μJ under a pump power of 8.41 W.
Article
Optics
Xiaoli Zhang, Youwei Zhang, Ruiqiang Xu, Jianbin Pan, Lei Hu, Weijia Duan, Weiren Zhao
Summary: Research has found that self-assembled CsPbBr3 nanoplatelets prepared at room temperature exhibit excellent nonlinear optical performance, making them suitable for applications in optical communication, laser pulses, and nonlinear optics.
JOURNAL OF LUMINESCENCE
(2023)
Article
Optics
A. M. M. Nasir, A. A. Latiff, S. A. Anuar, A. R. Muhammad, M. F. A. Rahman
Summary: This study investigates the use of Molybdenum Titanium Aluminum Carbide (Mo2Ti2AlC2) as a reliable saturable absorber (SA) for stable pulse generation at a wavelength of 1563 nm. A Mo2Ti2AlC2-PVA film was created by dispersing Mo2Ti2AlC2 powder with > 200 nm particle size into polyvinyl alcohol (PVA) and drying it to form a film. The Mo2Ti2AlC2-PVA film exhibited a linear absorption coefficient of approximately 1.5 dB at the Q-switched working wavelength. Self-started Q-switching was achieved with pump power ranging from 20 mW to 55 mW, resulting in a pulse width reduction from 21.7 μs to 8.9 μs and an increase in repetition rate from 20.45 kHz to 40.40 kHz. The pulsed laser showed good stability, with a signal-to-noise ratio (SNR) of 61 dB. The highest output power and pulse energies were measured at 1.1 mW and 27.2 nJ, respectively. These findings highlight the potential of Mo2Ti2AlC2 as an alternative passive SA for laser pulsing at the 1.55-micron wavelength.
Article
Optics
Jinhe Yuan, Jiarui Li, Zhengyang Wu, Shuangcheng Li, Jie Han, Linjun Li
Summary: In this paper, MXene V2CTx was used as a saturable absorber for a passively Q-switched laser, achieving nanosecond pulses with high peak power and high repetition rate. The V2CTx-SA was prepared by spin-coating method and its linear and nonlinear absorption characteristics were studied. The results demonstrate the great practicability of V2CTx in laser applications.
CHINESE OPTICS LETTERS
(2023)
Article
Optics
Yujin Chen, Jianhua Huang, Yanfu Lin, Xinghong Gong, Zundu Luo, Yidong Huang
Summary: A 1.5-1.6 μm pulse laser passively Q-switched by a Co2+:MgAl2O4 crystal was realized in an Er:Yb:Sr3Gd2(BO3)(4) crystal, generating a pulse laser with energy of 9.1 μJ, repetition frequency of 15.6 kHz, and duration of 29 ns. The output laser beam exhibited linear polarization parallel to the Y optical indicatrix axis, making the Er:Yb:Sr3Gd2(BO3)(4) crystal a promising gain medium for 1.5-1.6 μm laser applications.
OPTICS AND LASER TECHNOLOGY
(2021)
Article
Optics
O. L. Antipov, Yu A. Getmanovskiy, S. S. Balabanov, S. Larin, V. V. Sharkov
Summary: In this study, a Tm3+:Lu2O3 ceramics laser with an L-shaped cavity was in-band pumped by a fiber laser at 1670 nm, achieving high power and multi-wavelength outputs in CW and passively Q-switched regimes.
LASER PHYSICS LETTERS
(2021)
Article
Optics
Linghao Kong, Hongwei Chu, Na Li, Han Pan, Shengzhi Zhao, Dechun Li
Summary: We have reported the use of VOx/NaVO3 nanocomposite as a novel saturable absorber for the first time. The Z-scan technology was used to determine the efficient nonlinear absorption coefficient and modulation depth. Our results demonstrate the potential of VOx/NaVO3 as an optical modulator in the near-infrared region.
CHINESE OPTICS LETTERS
(2022)
Article
Optics
Xihu Wang, Jinyu Hu, Xuyang Wang, Jinlong Xu, Yunyun Liu, Yijian Sun, Zhenyu You, Chaoyang Tu
Summary: We reported a mid-infrared passively Q-switching Er:YSGG pulse laser based on Ti(3)C(2)Tx MXene saturable absorber, achieving a shortest pulse width of 335 ns and a repetition rate of 207 KHz. This is the shortest pulse compared with other 3 um solid state lasers based on MXene saturable absorbers. The results suggest that MXene holds promise as a Q-switching element for mid-infrared pulse lasers.
Article
Engineering, Electrical & Electronic
N. A. A. Ramlan, R. Zakaria, N. F. Zulkifli, N. Kasim, R. A. M. Yusoff, A. A. A. Jafry
Summary: Q switching was achieved in an Erbium-doped fiber laser using In2Se3-PVA as a passive saturable absorber, demonstrating excellent performance in the mid-infrared regime.
OPTICAL FIBER TECHNOLOGY
(2022)
Article
Optics
Samuel Paul David, Venkatesan Jambunathan, Fangxin Yue, Antonio Lucianetti, Tomas Mocek
Summary: This study presents the performance of diode-pumped Yb:LuAG lasers in cryogenic conditions in both continuous wave and pulsed modes, with a focus on the optimal crystal temperature of 140K. The use of Cr:YAG saturable absorbers for passive Q-switching resulted in significant improvements in pulse energy and peak power.
OPTICS AND LASER TECHNOLOGY
(2021)
Article
Instruments & Instrumentation
Wensheng Zhang, Linjun Li, Qiong Gao, Sheng Zhou
Summary: This paper presents a Ho:GTO laser dual end-pumped by a laser diode at 1.91 μm, achieving high output power and slope efficiency under CW regime, and utilizing Cr2+:ZnS as a saturable absorber to achieve small pulse width and high repetition rate. The Ho:GTO laser also demonstrated good beam quality factors and was successfully used as the pump source for a mid-infrared ZGP-OPO system, achieving high average output power and slope efficiency.
INFRARED PHYSICS & TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
A. W. Al-Alimi, N. A. Cholan, M. T. Alresheedi, A. F. Abas, Z. A. Talib, N. Mohd Yusoff, M. A. Mahdi
Summary: This study investigates the use of polarization-maintaining thulium-doped fiber as a saturable absorber in an erbium-ytterbium-doped fiber laser. The experimental results show that stable pulse laser output can be achieved with the proposed fiber laser architecture.
RESULTS IN PHYSICS
(2022)
