High-Power Laser Oscillation Test Using Ceramic Waveguide
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.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 2013
- Accession Number
- ADA580868
Entities
People
- Tomosumi Kamimura
Organizations
- Osaka Institute of Technology