Perfection of CaLaSOAP: Nd Laser Material.
Abstract
Calcium lanthanum silicate oxyapatite (CaLaSOAP) is an intermediate gain laser material developed for high energy storage and high average power Q-switching applications. The objective of this program was to increase the bulk and surface laser damage resistance of CaLaSOAP crystals and the yield of laser quality boules so that the full potential of the material could be realized in Q-switched laser ranger systems. Crack-free crystals up to 0.7 in. diameter were grown and fabricated into optically homogeneous 0.375 diameter laser rods free from inclusions detectable by laser light scattering. The two types of inclusions identified in CaLaSOAP--silica-rich dielectric particles and minute iridium platelets--were reduced below the limits of normal detectability by control of furnace gradient and atmosphere. While the damage resistance of CaLaSOAP has been more than doubled during this program, and the yield of laser rods nearly tripled, further achievements in growth technology are required to fully utilize CaLaSOAP.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1975
- Accession Number
- ADA008782
Entities
People
- C. S. Duncan
- K. B. Steinbruegge
- R. G. Seidensticker
- R. H. Hopkins
- T. Henningsen