LIQUID LASER PARAMETERS
Abstract
A number of techniques, such as elemental analysis, molecular weight determination, UV and IR absorption spectra, conductivity measurements and phosphorescence intensities were employed to determine the composition and structure of the europium, terbium and neodymium complexes of dimethylacetamide (DMAC) in both the solid state and in DMAC solutions. From the data obtained it was concluded that DMAC acts as a bidentate ligand; coordinating to the rare- earch ion through both oxygen and nitrogen. The empirical formula of the solid complexes is M(DMAC)3C13, where M equals the rare-earth ion. The solid DMAC complexes dissociate into two ionic species, M(DMAC)3C12+ and Cl-, when dissolved in DMAC. Neodymium phosphorescence (at 1.06 micron was found to be much more sensitive to quenching by liquids having high frequency C-H or O-H stretching vibrations than either terbium or europium. As a result neodymium phosphoresces only very weakly in DMAC. A new solvent was found in which neodymium phosphoresces almost a hundred times more intensely than in DMAC. This is the phosphorus oxychloride (POCl3)-tin tetrachloride (SnCl4) system in which neodymium oxide (Nd2O3) is quite soluble. This liquid has low viscosity at room temperature and appears to have good properties for use as a liquid laser. Preliminary but significant evidence for lasing in this Nd2O3-POCl3-SnCl4 system near 1.06 micron is presented. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 28, 1968
- Accession Number
- AD0828290
Entities
People
- Cecil B. Ellis
- Daniel Grafstein
- David R. Williams
- Norman Blumenthal