OPTICS EXPRESS
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2017
·Vol. 25
·期 15
·16916-16921
·
IF 3.307
Maria Pawliszewska,Yanqi Ge,Zhongjun Li,Han Zhang,Jaroslaw Sotor
We report mode-locking in holmium-doped all-fiber laser based on black phosphorus saturable absorber. The generated solitons are centered at 2094 nm with bandwidth reaching 4.2 nm and pulse duration of 1.3 ps. In harmonic mode-locking, up to 10th harmonic (290 MHz) was obtained. Properties of black phosphorus saturable absorber are investigated. Our findings validate black phosphorus suitability for ultrafast applications in mid-infrared.
研究领域:
光学
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材料科学
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DOI
PubMed
高影响因子
OPTICS LETTERS
·
2016
·Vol. 41
·期 6
·1221-1224
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IF 3.04
Yan Zhou,Min Zhao,Shiwei Wang,Chen-xia Hu,Yao Wang,Shuo Yan,Yue Li,Jianqiu Xu,Yulong Tang,Lin-Feng Gao,Qiang Wang,Hao-li Zhang
Graphitic carbon nitrides (CNs) have appeared as a new type of photocatalyst for water splitting, but their optical properties (e.g., nonlinear absorption), to the best of our knowledge, have been seldom explored. Here, we report the saturable absorption effects of novel 2D carbon-nitride-type nanosheets and use them as saturable absorbers to passively mode-lock Yb-doped fiber lasers. The CN-based saturable absorber is manufactured by solution coating of 2D CN nanosheets on a gold mirror and has a modulation depth and saturation intensity of 12.5% and 7.5 MW/cm2, respectively. Two different output couplers are employed to construct ring laser cavities. With the 10% coupler, the mode-locked fiber laser produces pulses with duration of ∼310 ps, average power of 1.24 mW, and repetition rate of 7.65 MHz. The laser spectrum is centered at 1066 nm with a bandwidth of 2.4 nm. Increasing the coupling ratio to 50% improves the output power to 2.58 mW but at the same time broadens the pulse width to 420 ps. As a new kind of 2D material with strong saturable absorption, CN nanosheets will open a new way for novel photonic and optoelectronic devices.
研究领域:
光学
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材料科学
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激光技术
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DOI
PubMed
高影响因子
CHEMISTRY OF MATERIALS
·
2020
·
IF 9.567
Xiaowen Zhang,Simin Liu,Dezhi Tan,Yuehui Xian,Duoduo Zhang,Zuxing Zhang,Yi Liu,Xiaofeng Liu,Jianrong Qiu
Establishing a new photonic material with large optical nonlinearity in the near-infrared regime is significant for ultrafast optical science and devices. In this paper, we developed a facile photochemical approach to fabricate covellite CuS plasmonic nanocrystals (NCs) with high chemical stability and strong oxidation resistance under ambient conditions. The photochemically derived CuS NCs possess strong absorption in the visible-to-near-infrared optical range caused by the localized surface plasmon resonance effect (LSPR). We further demonstrate superior saturable absorption behavior of CuS NCs with a large modulation depth and a high damage threshold. Using CuS as an optical switch, a highly stable mode-locked pulsed laser operating in the telecommunication band with a signal-to-noise ratio over 70 dB and a pulse duration of 1.57 ps has been achieved. Our results suggest that the photochemical method is an effective technique to fabricate plasmonic NCs, which can be developed as an excellent candidate for ultrafast photonic devices in the visible-to-near-infrared region.
研究领域:
光学材料
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超快光子学
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纳米技术
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产品关联
DOI
高影响因子
OPTICS AND LASER TECHNOLOGY
·
2024
·
IF 4.6
Cheng Lu,Weiyu Fan,Xiaoyu Zhao,Kaixin Li,Lezheng Wang,Yutian He,Huanian Zhang,Nannan Xu,Guomei Wang,Wenfei Zhang,Caixun Bai,Shenggui Fu
In practical applications, high repetition frequency (HRF) lasers are widely used in the fields of material processing, laser communication and medical therapy. In this work, the passive harmonic mode-locked (HML) technique is used to realize a HRF fiber laser in GHz level, effectively overcoming the limitations of traditional fiber laser structures. In order to maximize the advantages of nanomaterials, we synthesized high-purity hollow MoS 2 -Co 3 S 4 heterojunction materials by hydrothermal method. Then, a “sandwich” structure saturable absorber (SA) was prepared by photodeposition, and its nonlinear optical properties were investigated. The results demonstrate that the modulation depth and saturation intensity of MoS 2 -Co 3 S 4 SA are 24 % and 4.53 MW/cm 2 , respectively. The fiber laser based on MoS 2 -Co 3 S 4 SA could realize the fundamental frequency mode-locked at 23.11 MHz with a pulse width of 0.99 ps. In addition, various high-order HML are realized with this laser system capable of stable operation for extended periods up to the highest repetition frequency of 1.109 GHz achieved thus far in this field. This research provides strong support to promote the development and commercialization of HRF fiber lasers.
研究领域:
材料科学
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光学工程
✓ 已验证
产品关联
DOI
高影响因子
Chinese Physics B
·
2020
·Vol. 29
·期 7
·074205
·
IF 1.223
Cong Wang,Qian-Qian Hao,Wei-Wei Li,Hai-Jun Huang,Shao-Zhao Wang,Da-Peng Jiang,Jie Liu,Bing-Chu Mei,Liang-Bi Su
A Yb-doped CaF2 transparent ceramics was successfully fabricated by the hot-pressed method and its laser characteristics were studied. A broad tuning performance and mode-locked laser operation were demonstrated in this ceramics for the first time, to our best knowledge. A 60-nm continuous-wavelength tunable laser from 1019 nm to 1079 nm was obtained with a birefringent filter. By employing a semiconductor saturable absorber mirror without additional dispersion compensation elements, a continuous-wave mode-locked laser with pulse duration as short as 575 fs was delivered, at a central wavelength of 1048.5 nm. The oscillator is operated under a repetition rate of 55 MHz. These results indicate that the Yb:CaF2 transparent ceramics is an ideal candidate for the development of ultrafast lasers in the near-infrared regime.
研究领域:
光学材料
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激光技术
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物理学
✓ 已验证
DOI
高影响因子
Advanced Optical Materials
·
2016
·Vol. 4
·期 8
·1223-1229
·
IF 5.359
Yanhua Xu,Zhiteng Wang,Zhinan Guo,Hao Huang,Quanlan Xiao,Han Zhang,Xue-Feng Yu
Ultrasmall black phosphorus quantum dots (BPQDs) with an average size of 2.1 ± 0.9 nm are synthesized by using a solvothermal method in a N -methyl-2-pyrrolidone solution. Verified by femto-second laser Z-scan measurement, BPQDs exhibit excellent nonlinear optical response with a modulation depth of about 36% and a saturable intensity of about 3.3 GW cm −2 . By using BPQDs as optical saturable absorber, the ultrashort pulse with a pulse duration of about 1.08 ps centered at a wavelength of 1567.5 nm is generated in mode-locked fiber laser. These results suggest that BPQDs may be developed as another kind of promising nanomaterial for ultrafast photonics.
研究领域:
材料科学
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光学工程
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纳米技术
✓ 已验证
产品关联
DOI
高影响因子
LASER PHYSICS LETTERS
·
2017
·Vol. 14
·期 11
·110002
·
IF 2.537
Yongfeng Luo,Yan Zhou,Yulong Tang,Jianqiu Xu,Chenxia Hu,Linfeng Gao,Haoli Zhang,Qiang Wang
Solution based nanosheets of iron-doped graphitic carbon nitrides (Fe-g-CN) have been prepared and their optical properties (both linear and nonlinear) are studied. These two-dimensional (2D) nanosheets show an absorption spectrum extending to over 2 µm, and in particular they possess strong nonlinear (saturable) absorption in the 2 µm spectral region. A saturable absorber (SA) manufactured from 2D Fe-g-CN nanosheets gives a modulation depth and saturation intensity of 12.9% and 8.9 MW cm−2, respectively. This SA is further used to mode-lock thulium-doped fiber lasers, producing 2 µm laser pulses with a duration of 16.6 ps (dechirped to 2.2 ps), an average power of 96.4 mW, a pulse energy of 6.3 nJ, and a repetition rate of 15.3 MHz. As a new type of 2D nonlinear material with strong modulation capabilities, solution-based Fe-g-CN nanosheets can be potentially integrated into photonic and optoelectrionic devices, particuarly in the 2 µm spectral region.
研究领域:
光学
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材料科学
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激光技术
✓ 已验证
产品关联
DOI
高影响因子
Advanced Science
·
2024
·
IF 14.3
Ning Jiang,Hongwei Chu,Zhongben Pan,Han Pan,Shengzhi Zhao,Dechun Li
Low-dimensional lead halide perovskites demonstrate remarkable nonlinear optical characteristics attributed to their distinctive physical structures and electronic properties. Nevertheless, the investigation into their nonlinear optical properties remains in its incipient stages. This study addresses this gap by precisely controlling solvent volumes to synthesize both 0D Cs 4 PbBr 6 and Cs 4 PbBr 6 /CsPbBr 3 perovskites. Remarkably, as saturable absorbers, both pure Cs 4 PbBr 6 and Cs 4 PbBr 6 /CsPbBr 3 composites exhibit favorable nonlinear optical properties within the C-band, showcasing modulation depths of 9.22% and 16.83%, respectively. Moreover, for the first time, Cs 4 PbBr 6 and Cs 4 PbBr 6 /CsPbBr 3 composites have been successfully integrated into erbium-doped fiber lasers to realize the mode-locking operations. The utilization of the Cs 4 PbBr 6 /CsPbBr 3 composites as a saturable absorber that enables the generation of conventional soliton mode-locked laser pulses with a pulse duration of 688 fs, and a repetition frequency of 10.947 MHz at a central wavelength of 1557 nm. Cs 4 PbBr 6 is instrumental in generating laser pulses at a frequency of 10.899 MHz, producing pulse widths of 642 fs at the central wavelength of 1531.2 nm and 1.02 ps at the central wavelength of 1565.3 nm, respectively. The findings of this investigation underscore the potential utility of 0D Cs 4 PbBr 6 and Cs 4 PbBr 6 /CsPbBr 3 composites as promising materials for optical modulation within fiber laser applications.
研究领域:
材料科学
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光学
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光子学
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激光物理
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产品关联
DOI
PubMed
高影响因子
COMPOSITES PART B-ENGINEERING
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2022
·
IF 11.322
Li Dong,Hongwei Chu,Ying Li,Shengzhi Zhao,Dechun Li
Transition metal oxides (TMOs) are drawing multitudinous interest due to their strong thermochemical stability. In the present work, we proposed a facile strategy to fabricate TiO 2 /CuO nanocomposites . By using the conventional open- and closed-aperture Z-scan technology, the eminent nonlinear optical (NLO) properties of the as-prepared TiO 2 /CuO nanocomposites were demonstrated. In order to deeply investigate the NLO enhancement mechanism, we established a theoretical model to study the photogenerated carriers transfer dynamics at the interface with rate equations and the fouth-order Runge-Kutta algorithm. The simulation results indicated that under pumping irradiation, the carriers transferring from CuO to TiO 2 promoted the nonlinear optical absorption of CuO nanosheets and increased the modulation depth. Experimentally, the transient absorption spectroscopy and broadband time-resolved pump-probe measurements were presented to study the role of the carrier dynamics in the broadband near-infrared region. To further confirm the enhanced NLO response in TiO 2 /CuO nanocomposites, a highly stable dissipative soliton mode-locked Yb-doped fiber laser with TiO 2 /CuO saturable absorber was constructed at 1 μm for the first time. Our work manifested the key effects of the interface in TiO 2 /CuO nanocomposites to boost the NLO features which can be applied in ultrafast photonics applications.
研究领域:
材料科学
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光学
·
超快光子学
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DOI
高影响因子
OPTICS LETTERS
·
2020
·Vol. 45
·期 5
·1047-1050
·
IF 3.714
Guoquan Qian,Wenlong Wang,Guowu Tang,Xianchao Guan,Wei Lin,Qi Qian,Dongdan Chen,Changsheng Yang,Jiantao Liu,Guiyao Zhou,Shanhui Xu,Zhongmin Yang
In this work, Tm:YAG (Tm:${{\rm Y}_3}{{\rm Al}_5}{{\rm O}_{12}}$) ceramic-derived multimaterial fiber was fabricated by using the molten core method, which has a high gain per unit length of 2.7 dB/cm at 1950 nm. To our knowledge, this is the highest gain per unit length at 2 µm band in similar Tm:YAG-derived multimaterial fibers. A distributed Bragg reflector (DBR) fiber laser was built based on a 10-cm-long as-drawn fiber. The achieved 1950 nm laser, which has a maximum output power of $\sim{240}\;{\rm mW}$ and a slope efficiency of 16.5%, was pumped by a self-developed 1610 nm fiber laser. What is more, an all-fiber-integrated passively mode-locked fiber laser based on the 10-cm-long as-drawn fiber was realized. The mode-locked pulses operate at 1950 nm with duration of $\sim{380}\;{\rm ps}$, and the repetition rate is 26.45 MHz. The results described here indicate that the Tm:YAG ceramic-derived multimaterial fiber with high gain per unit length has promising applications in 2 µm all-fiber fiber lasers.
研究领域:
光学工程
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材料科学
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DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Shu-Yan Wang,Ming-Wei Mao,Ke Wang,Zhan-Zu Feng,Ru-Han Ma,Yu-Long Tang,Qiang Wang,Hao-Li Zhang
Space exploration is inseparable from advanced antiradiation materials with exceptional properties. Among these, nonlinear optical materials and devices, such as irradiation-resistant saturable absorbers (SAs), have garnered significant attention, particularly due to their critical role in integrated photonics for space use. This study presents a comprehensive evaluation of the space adaptability of two-dimensional (2D) W2N3 under simulated space radiation conditions. When subjected to 60Co γ-ray irradiation at doses exceeding 45 years of accumulation in a typical low-Earth orbit, W2N3 retained its robust third-order nonlinear saturable absorption across the visible- to near-infrared spectral range. Femtosecond transient absorption spectra offer a comprehensive view of the carrier dynamics of W2N3 before and after irradiation, delving into radiation effects and damage mechanisms that are otherwise elusive to conventional techniques. The synthesized W2N3 nanosheets were successfully employed as efficient SAs for Q-switched mode-locking in a Yb-doped fiber laser. The laser system operated at ∼1 μm NIR with high pulse energy and low saturation power, highlighting the remarkable potential of W2N3 for integration into lasers, modulators, and other photonic devices. Notably, the irradiated W2N3 demonstrated an identical mode-locking performance compared to its pristine counterpart. These findings provide valuable guidance for the rational design and screening of nonlinear optical materials capable of withstanding space radiation, offering significant implications for future space-based photonic applications.
研究领域:
材料科学
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光学
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光子学
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空间技术
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凝聚态物理
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纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry C
·
2020
·Vol. 9
·期 2
·508-516
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IF 7.059
Haiguo Hu,Yonghong Zeng,Shan Gao,Rui Wang,Jinlai Zhao,Kaixi You,Yufeng Song,Quanlan Xiao,Rui Cao,Jianqing Li,Zhitao Lin,Jia Guo,Yiqing Shu,Zhinan Guo,Dianyuan Fan
Tellurene, as a typical non-layered two-dimensional (2D) material, has attracted a lot of attention due to its superior properties such as fast photoconductivity, high thermoelectricity, large piezoelectricity, and excellent nonlinear optical response. Here, a unique, simple, and rapid solution method for the synthesis of high-quality hexagonal Te nanosheets with large area has been proposed. In the presence of polyvinylpyrrolidone (PVP) as a surfactant, the raw material, i.e., tellurium sodium hydride (NaHTe) was rapidly oxidized by O2 in ethanol solution to obtain the hexagonal Te nanosheets with a size of 5–11 μm and a thickness of 50–170 nm. In addition, the experimental results demonstrated that the prepared hexagonal Te nanosheets possessed good optical absorption and exhibited good photoresponse and stability as a photoanode material in a photoelectrochemical (PEC)-type photodetector. Meanwhile, this material also showed excellent nonlinear absorption properties, and the erbium-doped fiber ring laser with the Te nanosheets as a saturated absorption material successfully achieved mode-locking operation at 1550 nm. This work provides new ideas for the preparation of hexagonal Te nanosheets and their applications in optoelectronics and ultrafast photonics.
研究领域:
材料科学
·
光电子学
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超快光子学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）