Mirrorless Yb<sup>3+</sup>-Doped Monoclinic Double Tungstate Waveguide Laser Combining Liquid Phase Epitaxy and Multiplexed Beam fs Laser Writing

Mendívil, J. Martínez de; Hoyo, Jesús del; Solı́s, J.; Pujol, María Cinta; Aguiló, Magdalena; Dı́az, Francesc; Lifante, G.

doi:10.1109/jlt.2015.2484338

Cited by 8 publications

(4 citation statements)

References 21 publications

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“…The widths of the ridges were defined to be 20-100 µm, respectively. The roughness of the sidewalls of the air grooves was ∼1 µm, which was in good agreement with that reported in literatures on femtosecond laser ablated dielectrics [30]- [32].…”

Section: Experimental In Detailssupporting

confidence: 91%

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Ridge Waveguides and Y-Branch Beam Splitters in KTiOAsO4 Crystal by 15 MeV Oxygen Ion Implantation and Femtosecond Laser Ablation

Chen

Akhmadaliev

Romero

et al. 2017

J. Lightwave Technol.

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We report on the fabrication of ridge waveguides and Y-branch beam splitters in KTiOAsO 4 nonlinear optical crystal by the combination of 15 MeV oxygen (O 5+ ) ion implantation and femtosecond laser ablation. Guiding properties were investigated at the wavelengths of 633 and 808 nm, respectively, showing high polarization sensitivity of light propagation. Splitting ratios of these beam splitters are dependent on in-coupling alignment. The simulated guiding modal distributions of splitted guided beams, which was based on a reconstructed refractive index profile, shows reasonable consistence with the measured ones. After the stepwise annealing treatment at 473 and 573 K for 1 h each, the propagation losses for these guiding structures have been reduced considerably.

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Section: Experimental In Detailssupporting

confidence: 91%

“…Such technologies contain lithography, chemical etching, diamond blade dicing and laser ablation [26]- [28]. Ultrafast laser ablation has been proven to be a feasible and simple method to manufacture ridged guiding structures in several optical materials, including single crystals and glasses [29]- [32].…”

Section: Introductionmentioning

confidence: 99%

Ridge Waveguides and Y-Branch Beam Splitters in KTiOAsO4 Crystal by 15 MeV Oxygen Ion Implantation and Femtosecond Laser Ablation

Chen

Akhmadaliev

Romero

et al. 2017

J. Lightwave Technol.

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show abstract

“…With this purpose, several parallel scans, partially overlapped, each one slightly closer to the ridge are used. In the present work, a configuration with seven spots diagonally displaced was performed [11,21]. The phase mask imprinted in the SLM to generate the multiplexed beam array was obtained using a weighted Gerchberg-Saxton algorithm [22].…”

Section: 2-ridge Structuringmentioning

confidence: 99%

Ridge waveguide laser in Nd:LiNbO3 by Zn-diffusion and femtosecond-laser structuring

et al. 2016

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Ridge waveguide lasers have been fabricated on Nd 3+ doped LiNbO 3 crystals. The fs-laser writing technique was used to define ridge structures on a gradient-index planar waveguide fabricated by Zn-diffusion. This planar waveguide was formed in a z-cut LiNbO 3 substrate homogeneously doped with a 0.23% of Nd 3+ ions. To obtain lateral light confinement, the surface was then micromachined using a multiplexed femtosecond laser writing beam, forming the ridge structures. By butting two mirrors at the channel waveguide end-facets, forming a waveguide laser cavity, TM-polarized laser action at 1085 nm was achieved by end-fire TM-pumping at 815 nm. The waveguide laser shows a threshold of 31 mW, with a 7% of slope efficiency.

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“…as well as on the physical properties of the materials [25e27]. According to the relative position between laser inscribed tracks and refractive-index modification regions, the fs-laser micromachined waveguides can be classified into several groups, including directly written waveguides (so-called Type I) [15], stress-induced dual-line waveguides (so-called Type II) [16e18], depressed cladding waveguides [19e21], and ablated ridge waveguides [22,23]. The depressed cladding waveguides, which are constituted by numbers of low-index tracks around the waveguiding core, have superior performances over other configurations due to the tighter confinement of light and the ease of integration with fibers [28].…”

Section: Introductionmentioning

confidence: 99%

Low-loss optical waveguides in β-BBO crystal fabricated by femtosecond-laser writing

Cheng

Romero

et al. 2017

Optical Materials

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We report on the fabrication and characterization of b-BBO depressed cladding waveguides fabricated by femtosecond-laser writing with no significant changes in the waveguide lattice microstructure. The waveguiding properties and the propagation losses of the cladding structures are investigated, showing good transmission properties at wavelengths of 400 and 800 nm along TM polarization. The minimum propagation losses are measured to be as low as 0.19 dB/cm at wavelength of 800 nm. The well-preserved waveguide lattice microstructure and good guiding performances with low propagation losses suggest the potential applications of the cladding waveguides in b-BBO crystal as novel integrated photonic devices.

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Mirrorless Yb³⁺-Doped Monoclinic Double Tungstate Waveguide Laser Combining Liquid Phase Epitaxy and Multiplexed Beam fs Laser Writing

Cited by 8 publications

References 21 publications

Ridge Waveguides and Y-Branch Beam Splitters in KTiOAsO4 Crystal by 15 MeV Oxygen Ion Implantation and Femtosecond Laser Ablation

Ridge Waveguides and Y-Branch Beam Splitters in KTiOAsO4 Crystal by 15 MeV Oxygen Ion Implantation and Femtosecond Laser Ablation

Ridge waveguide laser in Nd:LiNbO3 by Zn-diffusion and femtosecond-laser structuring

Low-loss optical waveguides in β-BBO crystal fabricated by femtosecond-laser writing

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Mirrorless Yb3+-Doped Monoclinic Double Tungstate Waveguide Laser Combining Liquid Phase Epitaxy and Multiplexed Beam fs Laser Writing

Cited by 8 publications

References 21 publications

Ridge Waveguides and Y-Branch Beam Splitters in KTiOAsO4 Crystal by 15 MeV Oxygen Ion Implantation and Femtosecond Laser Ablation

Ridge Waveguides and Y-Branch Beam Splitters in KTiOAsO4 Crystal by 15 MeV Oxygen Ion Implantation and Femtosecond Laser Ablation

Ridge waveguide laser in Nd:LiNbO3 by Zn-diffusion and femtosecond-laser structuring

Low-loss optical waveguides in β-BBO crystal fabricated by femtosecond-laser writing

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Mirrorless Yb³⁺-Doped Monoclinic Double Tungstate Waveguide Laser Combining Liquid Phase Epitaxy and Multiplexed Beam fs Laser Writing