Nonlinear optical properties of PVD-grown Cr2Te3 film and its nonlinear switching application

Lee, Kyungtaek; Lee, In Hak; Khim, Yeong Gwang; Kwon, Suhyoung; Lim, Geunweon; Jung, Junha; Chang, Young Jun; Lee, Ju Han

doi:10.1016/j.jallcom.2023.170308

Cited by 19 publications

(8 citation statements)

References 86 publications

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“…We attributed this RSA effect to the two‐photon absorption (TPA) and the free‐carrier absorption (FCA) in HEA particles, which plays a favorable role in achieving the high energy dissipative soliton resonance mode‐locking operation. [ 46–50 ]…”

Section: Resultsmentioning

confidence: 99%

Enhanced Interband Transition in FeCoNiAlTi High‐Entropy Alloy for Ultrafast Nonlinear Optical Applications

Liu,

Li,

et al. 2023

Advanced Optical Materials

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High‐entropy alloys (HEAs) possess superior mechanical, thermal, and electronic properties, which attract great interest in the fields of photothermal, electrocatalysis, and magnetic applications. Herein, the nonlinear optical properties of FeCoNiAlTi HEA with a large specific surface area for the first time is investigated. Owing to the strong d–d interaction, the interband transition near the Fermi level could be enhanced in HEAs, leading to broadband optical absorption. Excitation with the picosecond laser source, the FeCoNiAlTi HEA possesses saturable absorption with a large modulation depth of 7.61% and 30.47% at 1 and 1.5 µm, respectively. Furthermore, at the higher excitation level at 1.5 µm, the saturable absorber exhibits a typical reverse saturable absorption property. Subsequently, the FeCoNiAlTi HEA on the tapered fiber first serves as the saturable absorber in the Yb‐doped fiber laser and the Er‐doped fiber laser, leading to the noise‐like pulses at 1 µm, and the stable Q‐switching, conventional soliton, and dissipative soliton resonance mode‐locking operations at 1.5 µm. This work confirms that the enhanced saturable absorption in HEAs can endow the high‐performance ultrashort pulse generation.

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Section: Resultsmentioning

confidence: 99%

Enhanced Interband Transition in FeCoNiAlTi High‐Entropy Alloy for Ultrafast Nonlinear Optical Applications

Liu,

Li,

et al. 2023

Advanced Optical Materials

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“…Furthermore, recently, another magnetic compound composed of Cr and Te elements, Cr 2 Te 3 , has also been investigated in the field of nonlinear optics. 51 In this work, the Cr 2 Te 3 -based SA was measured with a modulation depth of 5.6%, a nonlinear absorption coefficient of −1.43 × 10 5 cm GW −1 and a nonlinear refraction coefficient of −1.22 cm 2 GW −1 , respectively. What's more, the stable Q-switching Er-doped laser at a wavelength of 1530.3 nm with a pulse duration of 2.62 μs was obtained.…”

Section: Resultsmentioning

confidence: 99%

CrTe₂ as a new saturable absorber for a passive mode-locking Er-doped laser

Qiao,

Ahmed,

et al. 2023

J. Mater. Chem. C

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“…Among the various types of techniques available for the production of gas-sensitive films for sensor fabrication, the physical vapor deposition (PVD) method is a fairly common and advanced technique by which it is possible to obtain not only amorphous, polycrystalline, or single-crystalline materials but also composite gas-sensitive structures. − E-beam and magnetron DC/RF deposition methods belonging to the PVD group are relatively cheap, controllable, and common systems capable of transitioning from small-scale laboratory production to large-scale manufacturing. ,, …”

Section: Introductionmentioning

confidence: 99%

MWCNTs/Fe₂O₃:ZnO Nanocomposite Material for Chemoresistive Sensing of Hydrogen Peroxide Vapors

Aleksanyan,

Sayunts,

Shahkhatuni

et al. 2024

ACS Appl. Electron. Mater.

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Hydrogen peroxide is widely used in medical and industrial applications, and the rapid detection of low concentrations of its vapor is considered to be a major challenge. In this study, we have successfully implemented the fabrication of an MWCNTs/ Fe 2 O 3 :ZnO chemoresistive sensor for hydrogen peroxide vapor (HPV) detection using RF magnetron sputtering and electron-beam deposition methods. The material properties of the MWCNTs/ Fe 2 O 3 :ZnO structure were characterized in detail using scanning electron microscopy (SEM), energy-dispersive X-ray (EDX) elementary analysis, and transmission electron microscopy (TEM). The HPV sensing performances of the sensors were investigated in the temperature range 25−250 °C with and without ultraviolet (UV) irradiation. Sensor response values ranged from 35 to 1043 and from 7.3 to 198 at operating temperatures of 100 °C (without UV irradiation) and 150 °C (with UV irradiation), respectively, in the HPV concentration range of 1.5−22 ppm. Therefore, the Fe 2 O 3 :ZnO material decorated with MWCNTs is a promising candidate for integration into real-life HPV detection systems.

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Nonlinear optical properties of PVD-grown Cr2Te3 film and its nonlinear switching application

Cited by 19 publications

References 86 publications

Enhanced Interband Transition in FeCoNiAlTi High‐Entropy Alloy for Ultrafast Nonlinear Optical Applications

Enhanced Interband Transition in FeCoNiAlTi High‐Entropy Alloy for Ultrafast Nonlinear Optical Applications

CrTe₂ as a new saturable absorber for a passive mode-locking Er-doped laser

MWCNTs/Fe₂O₃:ZnO Nanocomposite Material for Chemoresistive Sensing of Hydrogen Peroxide Vapors

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Nonlinear optical properties of PVD-grown Cr2Te3 film and its nonlinear switching application

Cited by 19 publications

References 86 publications

Enhanced Interband Transition in FeCoNiAlTi High‐Entropy Alloy for Ultrafast Nonlinear Optical Applications

Enhanced Interband Transition in FeCoNiAlTi High‐Entropy Alloy for Ultrafast Nonlinear Optical Applications

CrTe2 as a new saturable absorber for a passive mode-locking Er-doped laser

MWCNTs/Fe2O3:ZnO Nanocomposite Material for Chemoresistive Sensing of Hydrogen Peroxide Vapors

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CrTe₂ as a new saturable absorber for a passive mode-locking Er-doped laser

MWCNTs/Fe₂O₃:ZnO Nanocomposite Material for Chemoresistive Sensing of Hydrogen Peroxide Vapors