Single-crystal fibers for higher-power lasers

Maxwell, G.; Ponting, Bennett; Soleimani, Nazila; Gebremichael, Eminet

doi:10.1117/2.1201401.005298

Cited by 2 publications

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References 2 publications

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“…Ca 3 Ga 2 Ge 3 O 12 green state claddings extruded on both doped and undoped single-crystal YAG fibers were melted and then crystallized in a laser heated pedestal growth (LHPG) apparatus modified by AFRL from an earlier design. 18,19,20 The apparatus had a hot zone of 0.5 mm; speeds of 1.0 to 2.7 mm/min were used. Microstructures of the various cladded fibers and the crystallized YAGgarnet melts were observed with SEM (Quanta, Thermo Fischer, Hillsboro, OR) and TEM (Talos, Thermo Fischer, Hillsboro, OR) with EDX.…”

Section: Ca3ga2ge3o12 and Lica2mg2asxv3-xo12 Claddingmentioning

confidence: 99%

Claddings for YAG single crystal high power fiber lasers

Hay

Kim²,

Schlup³

et al. 2023

Solid State Lasers XXXII: Technology and Devices

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Doped single-crystal YAG fibers used as single-mode lasers require claddings with precise refractive index and high thermal conductivity. Three cladding materials that use coextrusion of green cladding on fiber cores as an initial processing step are described: 1. Undoped YAG cladding, followed by sintering or hot isostatic pressing. 2. Ca 3 Ga 2 Ge 3 O 12 garnet cladding that melts beneath 1400°C. 3. LiCa 2 Mg 2 As 3x V 3-3x O 12 garnet cladding that melts beneath 1100°C. Microstructures are characterized by TEM. Equipment and procedures are described. Garnet refractive index models are developed and validated to predict cladding refractive index. Advantages and disadvantages of the different claddings are compared.

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Section: Ca3ga2ge3o12 and Lica2mg2asxv3-xo12 Claddingmentioning

confidence: 99%