Nonlinear Optical Properties from Engineered 2D Materials

Molecules, Год журнала: 2023, Номер 28(18), С. 6737 - 6737

Опубликована: Сен. 21, 2023

Two-dimensional (2D) materials with atomic thickness, tunable light-matter interaction, and significant nonlinear susceptibility are emerging as potential candidates for new-generation optoelectronic devices. In this review, we briefly cover the recent research development of typical optic (NLO) processes including second harmonic generation (SHG), third (THG), well two-photon photoluminescence (2PPL) 2D materials. Nonlinear interaction in atomically thin is important both fundamental future The NLO performance can be greatly modulated methods such carrier injection tuning, strain artificially stacking, plasmonic resonant enhancement. This review will discuss various optical corresponding tuning propose its application

Язык: Английский

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Advances and Challenges of Ultrafast Fiber Lasers in 2–4 µm Mid‐Infrared Spectral Regions

Laser & Photonics Review, Год журнала: 2023, Номер 18(3)

Опубликована: Ноя. 27, 2023

Abstract Mid‐infrared (mid‐IR) ultrafast lasers are widely employed in biomedicine, molecular spectroscopy, material processing, and nonlinear optics. With the improvement of fiber gain media other optical elements, low‐cost, compact, high‐efficiency open up new opportunities for 2–4 µm pulse generations, which calls a comprehensive review their mode‐locking mechanisms, media, laser system performance. This paper, beginning with an overview pulse‐generation technologies, reviews recent progress on mid‐IR lasers, including Tm 3+ ‐, Ho ‐doped, /Ho codoped silicate 2 Er Dy /Pr ZBLAN 2.5–4 lasers. Among them, status based 2D passive is emphatically discussed. Meanwhile, novel advances fibers explored. Furthermore, current prospective applications such systems also introduced detail. finally summarizes challenges associated future development provides outlook how to achieve more desirable performance (e.g., higher average power, energy, longer emission wavelength) that can lead practical uses

Язык: Английский

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Wavelength-tunable spatiotemporal mode-locking in a large-mode-area Er:ZBLAN fiber laser at 2.8 µm

Optics Letters, Год журнала: 2024, Номер 49(5), С. 1117 - 1117

Опубликована: Янв. 22, 2024

We report a tunable spatiotemporally mode-locked large-mode-area Er:ZBLAN fiber laser based on the nonlinear polarization rotation technique. A diffraction grating is introduced to select operating wavelength. Under spectral and spatial filtering effects provided by coupling respectively, stable ps-level pulses around 2.8 µm with repetition rate of 43.4 MHz are generated. Through careful adjustment grating, broad wavelength tuning range from 2747 2797 nm realized. To best our knowledge, this first wavelength-tunable in mid-infrared region.

Язык: Английский

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Investigation of High‐Power Spatiotemporal Mode‐Locking with High Beam Quality

Laser & Photonics Review, Год журнала: 2023, Номер 17(9)

Опубликована: Июль 20, 2023

Abstract The developed spatiotemporal mode‐locked (STML) laser has emerged as an effective platform for investigating high‐dimensional nonlinear dynamics. Additionally, it offers a novel avenue the design of fiber oscillators capable operating at high power levels. At present, focus STML research primarily revolves around this aspect. However, considering practical applications, there is strong desire to conceive simple all‐fiber oscillator with both beam quality and power. In study, all‐fiber, high‐power based on multimode fibers constructed investigated. By manipulating pump polarization state, could operate in dissipative soliton or noise‐like pulse regime, average output powers two operation states reaching Watt level. Simultaneously, high‐quality profiles are observed states. To best knowledge, first demonstration mode‐locking quality. study holds great benefits advancing investigations compact lasers which deliver outputs superior ultimately propels application lasers. Furthermore, contributes understanding behavior

Язык: Английский

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Light localization near the interface between two crystals with sign-change nonlinearity and the index gradient

Physics Letters A, Год журнала: 2025, Номер unknown, С. 130339 - 130339

Опубликована: Фев. 1, 2025

Язык: Английский

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Investigation of the Nonlinear Optical Properties of Silk Fibroin (SF) Using the Z-Scan Method

Materials, Год журнала: 2025, Номер 18(5), С. 1052 - 1052

Опубликована: Фев. 27, 2025

Silk fibroin (SF), the primary protein in silkworm silk, has emerged as a promising organic nonlinear optical material due to its unique combination of transparency, biocompatibility, and environmental sustainability. In this study, we investigate properties SF thin films using z-scan technique with femtosecond laser pulses (35 fs, 800 nm, 1 kHz). Our results reveal strong self-defocusing effect (negative refractive index) significant multiphoton absorption, demonstrating SF's tunable response. Additionally, transmittance measurements confirm partial transparency deep UV region, enhancing potential for second-harmonic generation (SHG) efficient light frequency conversion. These findings address key knowledge gap optics, positioning versatile biopolymer advanced photonic applications.

Язык: Английский

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Nonlinear propagation of high-energy multimode pulses in solid-state multipass cells

Applied Physics B, Год журнала: 2025, Номер 131(3)

Опубликована: Фев. 28, 2025

Язык: Английский

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Measurement of Highly Nonlocal Nonlinear Responses via Circular Airy Beams

Laser & Photonics Review, Год журнала: 2025, Номер unknown

Опубликована: Март 24, 2025

Abstract Structured light is extensively employed in optical measurements due to its exotic behaviors light‐matter interactions. Notably, it exhibits exceptional capability detecting the nonlinear response of media. Nevertheless, current detections enabled by structured are limited local nonlinearities. Here, an approach for measuring highly nonlocal responses via a circular Airy beam demonstrated. Under action nonlinearity, profile reshaped ring pattern whose size linearly increased with injected power. The slope linear relation reveals response, as proved theory. Experimentally, method verified testing typical medium having nonlinearity. findings may trigger more studies on measurement nonlinearities light.

Язык: Английский

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Stabilization and Destabilization of Multimode Solitons in Nonlinear Degenerate Multi-Pass Cavities

Research Square (Research Square), Год журнала: 2025, Номер unknown

Опубликована: Апрель 2, 2025

Optical solitons in multimode nonlinear optical systems offer a unique platform for exploring the interplay of nonlinearity, dispersion, and spatial mode coupling, offering insights into complex wave phenomena. Multi-pass cavities (MPCs) incorporating Kerr media serve as prototypical systems, enabling high-efficiency supercontinuum generation pulse compression. However, stabilizing femtosecond laser pulses solid-medium-based MPCs (solid MPCs) under high nonlinearity remains significant challenge due to which disrupts beam stability. In this work, we address by investigating stability using Floquet analysis first-order perturbation theory. We identify novel mode-coupling-suppression (MCS) medium lengths, where destructive interference among components suppresses coupling facilitates soliton stabilization. Under MCS conditions, demonstrate stable propagation solid with phases up 1.85π per pass, achieving 10-fold compression exceptional spatio-spectral homogeneity. Our findings valuable guidance designing advanced tailored media.

Язык: Английский

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Nonlinear Transverse Mode Conversion Based on Ferroelectric Domain Engineering in Thin Film Lithium Niobate

Laser & Photonics Review, Год журнала: 2025, Номер unknown

Опубликована: Май 1, 2025

Abstract The transverse mode of a waveguide is an emerging degree freedom photons, and the nonlinear frequency conversion which essential to construct multi‐dimensional multiplexed photonic integrated circuits for high‐capacity optical communications. challenges modes are simultaneously fulfill phase‐matching conditions maximize overlap integral. In this work, scheme proposed achieve based on 2D ferroelectric domain engineering in material platform thin‐film lithium niobate (TFLN), where longitudinal periodic distribution second‐order nonlinearity ensures quasi‐phase‐matched between guided‐modes; while can As proof‐of‐principle experiment, designed fabricated with structure Z‐cut TFLN, demonstrates from TM 00 fundamental wave 10 second harmonic wave. Efficient conversions high‐order numerically verified. guided‐mode has advantages flexible design, high efficiency, scalability, will lay foundation development classical quantum chips multiple degrees freedom.

Язык: Английский

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