Femtosecond laser direct writing of flexibly configured waveguide geometries in optical crystals: fabrication and application | 您所在的位置:网站首页 › Flexibly什么意思 › Femtosecond laser direct writing of flexibly configured waveguide geometries in optical crystals: fabrication and application |
Figure 1. Schematic illustration of a typical experimental setup for FsLDW operation. Figure 2.Schematic illustrations FsLDW of (a) single-line waveguides based on smooth Type-Ⅰ modification, (b) stress-induced double-line waveguides based on two parallel Type-Ⅱ laser tracks, and (c) depressed-cladding waveguides. Figure 3.Schematic illustration of nonlinear waveguide channels based on FsLDW single-/multi-line geometries. Figure 4.(a) Schematic illustration of Y-branch waveguide channels based on FsLDW double-line geometry39. (b) The microscopic photograph of the splitting region in a FsLDW Yb:YAG waveguide splitter39. (c) The cross-sectional microscopic photograph of a FsLDW Nd:YAG waveguide array43. (d) Reconstructed refractive index profile of the fabricated waveguide array43. Scale bars denote 30 µm. Figure reproduced with permission from: (a, b) ref.39 and (c, d) ref.43, Optical Society of America. Figure 5.(a) Schematic illustration of curved waveguide channels based on FsLDW depressed-cladding geometries34. (b) Schematic illustration of three-element 3D photonic-lattice-like cladding photonic structures for beam splitting and ring-shaped beam transformation31. Figure reproduced with permission from: (a) ref.34, SPIE; (b) ref.31, Optical Society of America. Figure 6.Schematic illustration of a MZI EO modulator with Y-branch waveguide channels based on FsLDW double-line geometries58. Figure 7.(a) Lasing performance of FsLDW curved Yb:YAG double-line waveguides with different curvature radii R38. (b–e) Output modal profiles of FsLDW beam splitters and ring-shaped beam transformers49, 50. Figure reproduced with permission from: (a) ref.38, Optical Society of America; (b, e) ref.49, Springer Nature; (c, d) ref.50, IEEE. Figure 8.Modal profiles of SHG (1064→532 nm) and 1×4 beam splitting from photonic-lattice-like KTP cladding waveguides69. |
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