Suspended-core fiber with embedded GaSe nanosheets for second harmonic generation

Ma, Yuxin; Jiang, Biqiang; Guo, Yasong; Zhang, Peng; Cheng, Tonglei; Gan, Xuetao; Zhao, Jianlin

doi:10.1364/oe.465248

Cited by 4 publications

(6 citation statements)

References 33 publications

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“…When a pump laser is applied to excite SH, considering accumulated SH from different axial positions of the microfiber, the power of output signal (P 2ω ) is determined by 27,29,30,37,38…”

Section: Resultsmentioning

confidence: 99%

“…Figure 1(a) schematically depicts the layered-GaSe coated microfiber for SH excitation and crystal structure of ε-GaSe used in experiments. The microfiber was fabricated, by the flame drawing technique, with a diameter of approximately 3.3 μm in the tapered region, which is close to the optimal diameter for the phase-matched HE 11 (ω) and HE 31 (2ω), EH 11 (2ω) modes 24,27 . The difference between effective refractive indices of HE 31 (2ω) and EH 11 (2ω) is on the magnitude of 10 −4 , and the two modes degenerate into the same scalar mode.…”

Section: Device Fabrication and Characterizationsmentioning

confidence: 98%

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Broadband and continuous wave pumped second-harmonic generation from microfiber coated with layered GaSe crystal

Hao¹,

Jiang²,

Ma³

et al. 2023

OEA

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The conversion-efficiency for second-harmonic (SH) in optical fibers is significantly limited by extremely weak second-order nonlinearity of fused silica, and pulse pump lasers with high peak power are widely employed. Here, we propose a simple strategy to efficiently realize the broadband and continuous wave (CW) pumped SH, by transferring a crystalline GaSe coating onto a microfiber with phase-matching diameter. In the experiment, high efficiency up to 0.08 %W -1 mm -1 is reached for a C-band pump laser. The high enough efficiency not only guarantees SH at a single frequency pumped by a CW laser, but also multi-frequencies mixing supported by three CW light sources. Moreover, broadband SH spectrum is also achieved under the pump of a superluminescent light-emitting diode source with a 79.3 nm bandwidth. The proposed scheme provides a beneficial method to the enhancement of various nonlinear parameter processes, development of quasi-monochromatic or broadband CW light sources at new wavelength regions.

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“…When a pump laser is applied to excite SH, considering accumulated SH from different axial positions of the microfiber, the power of output signal (P 2ω ) is determined by 27,29,30,37,38…”

Section: Resultsmentioning

confidence: 99%

Section: Device Fabrication and Characterizationsmentioning

confidence: 98%

Broadband and continuous wave pumped second-harmonic generation from microfiber coated with layered GaSe crystal

Hao¹,

Jiang²,

Ma³

et al. 2023

OEA

Self Cite

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show abstract

“…图 6 (a) 基于转移方法制备的单层WS 2 -光纤纳米线混合结构实现SHG的增强 [81] . (b)-(e) 基于溶液法制备的二维材料-光纤集成结构实现二阶非线性过程增强的研究进展 (b) 少层GaSe辅助光学微光纤实现高效的二阶非线性过程 [82] ; (c) 连续波泵浦的InSe集成的微光纤中频率上转换 [84] ; (d) 填充有GaSe纳米片的HCF结构示意图 [85] ; (e) GaSe纳米片集成的SCF实现SHG过程 [86] Fig. 6.…”

Section: Si Lic On Ni Tr Id Eunclassified

“…(a) Enhanced SHG in hybrid WS 2 -optical-fiber-nanowire structureprepared by transfer method [81] . (b)-(e) Research progress on enhancement of second-order nonlinear process of 2D material-optical fiber integrated structures prepared by solution methods: (b) High-efficiency second-order nonlinear processes in an optical microfibre assisted by few-layer GaSe [82] ; (c) continuous-wave pumped frequency upconversions in an InSe-integrated microfiber [84] ; (d) schematic of a HCF filled with GaSe nanosheets [85] ; (e) SCF with embedded GaSe nanosheets for SHG [86] .…”

Section: Si Lic On Ni Tr Id Ementioning

confidence: 99%

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Research progress of nonlinear optical properties of integrated two-dimensional materials

Liu¹,

Liu²,

Zhu³

2023

Acta Phys. Sin.

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Photonic platforms with excellent nonlinear optical characteristics are very important to improve the devices' performance parameters such as integration, modulation speed and working bandwidth for all-optical signal processing. The traditional processing technology of photonic platforms based on silicon, silicon nitride and silicon oxide is mature, but the nonlinear function of these optical platforms is limited due to the characteristics of materials; Although two-dimensional (2D) materials possess excellent nonlinear optical properties, their nonlinear potential cannot be fully utilized because of their atomic layer thickness. Integrating 2D materials with mature photonic platforms can significantly improve the interaction between light and matter, give full play to the potential of 2D materials in the field of nonlinear optics, and improve the nonlinear optical performance of the integrated platforms on the basis of fully utilizing the mature processing technology of the photonic platforms. Based on the above ideas, starting from the basic principle of nonlinear optics (Section 2), this review combs the research progress of various nonlinear photonic platforms (resonators, metasurfaces, optical fibers, on-chip waveguides, etc.) heterogeneously integrated with 2D materials, realized by traditional transfer methods (Section 3) and emerging direct-growth methods (Section 4) in recent years, and the introduction is divided into second-order and third-order nonlinearity. Compared with the transfer methods, the advantages of using direct-growth methods to realize the heterogeneous integration of 2D materials and photonic platforms for the study of nonlinear optics are expounded, and the technical difficulties to be overcome in the actual device preparation are also pointed. In the future, we can try to grow 2D materials directly onto the surfaces of various cavities to study the enhancement of second-order nonlinearity; we can also try to grow 2D materials directly onto the on-chip waveguides or microrings to study the enhancement of third-order nonlinearity. Generally speaking, the research on integrated nonlinearity by directly growing 2D materials onto various photonic structures has aroused great interest of researchers in this field. As time goes on, breakthrough progress will be made in this field, and technical problems such as continuous growth of high-quality 2D materials onto photonic structures and wafer-level large-scale preparation will be broken, further improving the performance parameters of chips and laying a good foundation for optical communication, signal processing, optical sensing, all-optical computing, quantum technology and so on.

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Mid-infrared second-harmonic generation and its red-shift signal induced by cross-phase modulation in an AsSe2 soft glass microstructured optical fiber

Cheng,

Chen,

Wang

et al. 2024

Optics & Laser Technology

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Suspended-core fiber with embedded GaSe nanosheets for second harmonic generation

Cited by 4 publications

References 33 publications

Broadband and continuous wave pumped second-harmonic generation from microfiber coated with layered GaSe crystal

Broadband and continuous wave pumped second-harmonic generation from microfiber coated with layered GaSe crystal

Research progress of nonlinear optical properties of integrated two-dimensional materials

Mid-infrared second-harmonic generation and its red-shift signal induced by cross-phase modulation in an AsSe2 soft glass microstructured optical fiber

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