Potassium bromide for infrared laser windows: Crystal growth, chemical polishing, and optical absorption
| Autor: | Philipp H. Klein, J. W. Davisson, James A. Harrington |
|---|---|
| Rok vydání: | 1976 |
| Předmět: |
Absorption spectroscopy
Potassium bromide Infrared Mechanical Engineering Potassium Far-infrared laser Inorganic chemistry Infrared spectroscopy chemistry.chemical_element Iodine monobromide Condensed Matter Physics chemistry.chemical_compound chemistry Mechanics of Materials General Materials Science Absorption (chemistry) |
| Zdroj: | Materials Research Bulletin. 11:1335-1342 |
| ISSN: | 0025-5408 |
| Popis: | Potassium bromide single crystals have been prepared with 10.6-..mu..m bulk absorption coefficients smaller than the intrinsic value for potassium chloride. Of several halogen-producing vapors studied, that of carbon tetrachloride is most effective in decreasing infrared absorption. Water-grinding, followed by polishing with HBr solutions, produces nonabsorbing and etch-pit-free surfaces on planes remote from (100). Hydroxyl lines are absent from infrared absorption spectra of all crystals. Vacuum-ultraviolet absorption at 215 nm shows presence of between 0.01 and 4.0 OH/sup -/ ions per million anions. Incomplete removal of metaborate (BO/sub 2//sup -/) by iodine monobromide or by hexabromobenzene is evident in infrared absorption spectra. |
| Databáze: | OpenAIRE |
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