TiOxNy Thin Film Sputtered on a Fiber Ball Lens as Saturable Absorber for Passive Q-Switched Generation of a Single-Tunable/Dual-Wavelength Er-Yb Double Clad Fiber Laser

Álvarez-Tamayo, R. I.; Gaspar-Ramírez, Omar; Prieto-Cortés, Patricia; García-Méndez, Manuel; Barcelata-Pinzón, Antonio

doi:10.3390/nano10050923

Cited by 5 publications

(6 citation statements)

References 39 publications

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“…Coaxial powder feeding processing was adopted, and argon gas was used as the protective gas. The process parameters were optimized by the orthogonal test, and the specific values are shown in Table 2 [ 28 , 29 , 30 , 31 ]. The laser cladding equipment [ 13 ] and system components are shown in Figure 1 .…”

Section: Methodsmentioning

confidence: 99%

Effects of Nano-CeO2 on Microstructure and Properties of WC/FeCoNiCrMo0.2 Composite High Entropy Alloy Coatings by Laser Cladding

et al. 2023

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FeCoNiCrMo0.2 high entropy alloy has many excellent properties, such as high strength, high wear resistance, high corrosion resistance, and high ductility. To further improve the properties of this coating, FeCoNiCrMo high entropy alloy (HEA) coatings, and two composite coatings, FeCoNiCrMo0.2 + WC and FeCoNiCrMo0.2 + WC + CeO2, were prepared on the surface of 316L stainless steel by laser cladding technology. After adding WC ceramic powder and CeO2 rare earth control, the microstructure, hardness, wear resistance, and corrosion resistance of the three coatings were carefully studied. The results show that WC powder significantly improved the hardness of the HEA coating and reduced the friction factor. The FeCoNiCrMo0.2 + 32%WC coating showed excellent mechanical properties, but the distribution of hard phase particles in the coating microstructure was uneven, resulting in unstable distribution of hardness and wear resistance in each region of the coating. After adding 2% nano-CeO2 rare earth oxide, although the hardness and friction factor decreased slightly compared with the FeCoNiCrMo0.2 + 32%WC coating, the coating grain structure was finer, which reduced the porosity and crack sensitivity of the coating, and the phase composition of the coating did not change; there was a uniform hardness distribution, a more stable friction coefficient, and the flattest wear morphology. In addition, under the same corrosive environment, the value of polarization impedance of the FeCoNiCrMo0.2 + 32%WC + 2%CeO2 coating was greater, the corrosion rate was relatively low, and the corrosion resistance was better. Therefore, based on various indexes, the FeCoNiCrMo0.2 + 32%WC + 2%CeO2 coating has the best comprehensive performance and can extend the service life of 316L workpieces.

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Section: Methodsmentioning

confidence: 99%

Effects of Nano-CeO2 on Microstructure and Properties of WC/FeCoNiCrMo0.2 Composite High Entropy Alloy Coatings by Laser Cladding

et al. 2023

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“…Typically, the fiber ball is fabricated by a controlled electric arc discharge on the fiber tip, from the manual operation of a fusion splicer. The discharge parameters such as time and power are optimized to control the ball diameter and shape, from both single-mode and multimode fibers [ 27 , 28 , 29 , 30 ]. Nowadays, fusion splicers with features for special fibers fabrication, such as fiber ball lenses and tapered fibers, are currently available.…”

Section: Fiber Ball Lens Interferometermentioning

confidence: 99%

Refractive Index Fiber Laser Sensor by Using a Fiber Ball Lens Interferometer with Adjustable Free Spectral Range

Álvarez-Tamayo

Prieto-Cortés

2023

Sensors

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In this work, a fiber laser refractometer based on a fiber ball lens (FBL) interferometer is proposed. The linear cavity erbium-doped fiber laser uses an FBL structure acting as a spectral filter and sensing element for determining the RI of a liquid medium surrounding the fiber. The optical interrogation of the sensor is the wavelength displacement of the generated laser line as a function of the RI variations. For the proposed FBL interferometric filter, the free spectral range of its wavelength-modulated reflection spectrum is adjusted to maximum in order to obtain RI measurements in a range of 1.3939 to 1.4237 RIU, from laser wavelength displacements in a range from 1532.72 to 1565.76 nm. The obtained results show that the wavelength of the generated laser line is a linear function of the RI variations on the medium surrounding the FBL with a sensitivity of 1130.28 nm/RIU. The reliability of the proposed fiber laser RI sensor is analytically and experimentally investigated.

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“…Light at different reflection angles can be partially coupled to the MBL and cause interference, justifying the use of these optical devices to extend effective coupling aperture, for example to extend the alignment tolerance of a photodiode [27]. The relationship between the angle that is formed and the distance D is shown in the following equation [17]:…”

Section: Operation Principle Of the Interferometric Filtermentioning

confidence: 99%

“…In this regard, wave interference produced by rays overlapping with a phase difference also occurs in a spherical microball lens (MBL) [17]. Then, the systems' optical configuration, including the filter formed by this MBL, was reported for specific applications [17][18][19][20]. This article; presents a spectral filter for tuning laser line's wavelength generated in an EDFL.…”

Section: Introductionmentioning

confidence: 99%

Tunable erbium doped fiber laser based on a spherical micro-ball lens as a Fabry–Perot interference filter

2021

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The tunable wavelength emission of an erbium doped fiber laser using a Fabry–Perot interference filter based on a fiber micro-ball lens (MBL) with a spherical shape is experimentally demonstrated. The filter is formed at the tip of a single-mode fiber by controlled electric arc discharge. The filter consists of a fiber MBL with a radius of 152.7 µm and a flat-convex mirror. A tunable single laser emission range of 1556.85–1569.72 nm is obtained when the mirror moves perpendicular to the fiber. Dual-wavelength laser emission with a separation of ∼12.9 nm corresponding to the free spectral range of interference modulation is obtained within the single laser wavelength tuning limits. The laser line exhibits full width at maximum half of 0.1 nm. The stability of the laser emission is also discussed. The use of a reliable tunable spectral filter for dual-wavelength emission and single tuning is demonstrated in the fiber laser’s design. The proposed spectral filter configuration can be useful in different research areas, such as the coherent development of light sources, optical communications, and optical instrumentation.

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TiOxNy Thin Film Sputtered on a Fiber Ball Lens as Saturable Absorber for Passive Q-Switched Generation of a Single-Tunable/Dual-Wavelength Er-Yb Double Clad Fiber Laser

Cited by 5 publications

References 39 publications

Effects of Nano-CeO2 on Microstructure and Properties of WC/FeCoNiCrMo0.2 Composite High Entropy Alloy Coatings by Laser Cladding

Effects of Nano-CeO2 on Microstructure and Properties of WC/FeCoNiCrMo0.2 Composite High Entropy Alloy Coatings by Laser Cladding

Refractive Index Fiber Laser Sensor by Using a Fiber Ball Lens Interferometer with Adjustable Free Spectral Range

Tunable erbium doped fiber laser based on a spherical micro-ball lens as a Fabry–Perot interference filter

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