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Accession Number ADA580868
Title High-Power Laser Oscillation Test Using Ceramic Waveguide.
Publication Date Jul 2013
Media Count 9p
Personal Author T. Kamimura
Abstract Solutions to thermal problems such as temperature gradients and thermal lensing inside laser gain media are indispensable for high-power laser oscillation. This report details using ceramic bonding technology to fabricate ceramic waveguide (YAG-Nd:YAG-YAG) laser elements larger than previously described, and a preliminary investigation into their laser oscillation properties. The laser active layer (e.g., Nd:YAG, 400 um thickness) was arranged at the center, and low refractive index materials (high thermal conductive material: pure YAG with 400 um thickness) was strongly bonded at the atomic level to both faces. Sapphire was used as waveguide cladding (YAG-Nd:YAG- YAG) for higher total internal reflection. In order to investigate the optical quality of the core layer, a monolithic structure Nd:YAG slab was prepared with similar dimensions as the waveguide sample. For laser output power scaling, a newly designed sample holder was fabricated that allowed cooling ability up to around 700 W. Laser oscillation experiments will be performed once coated samples are available.
Keywords Bonding technology
Ceramic materials
High power
Materials and devices
Transparent ceramics
Transparent polycrystalline materials
Waveguide ceramics

Source Agency Non Paid ADAS
NTIS Subject Category 49 - Electrotechnology
46C - Optics & Lasers
71D - Ceramics, Refractories, & Glass
94K - Laboratory & Test Facility Design & Operation
46 - Physics
Corporate Author Osaka Inst. of Technology (Japan).
Document Type Technical report
Title Note Final rept. 19 Sep 2011 - 18 Aug 2013.
NTIS Issue Number 1324
Contract Number FA2386-11-1-4082

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