Potassium bromide for infrared laser windows: Crystal growth, chemical polishing, and optical absorption

Philipp H. Klein; James W. Davisson; James A. Harrington

doi:10.1016/0025-5408(76)90040-4

Potassium bromide for infrared laser windows: Crystal growth, chemical polishing, and optical absorption

Philipp H. Klein, James W. Davisson, James A. Harrington

School of Engineering, Materials Science & Engineering

Research output: Contribution to journal › Article

5 Scopus citations

Abstract

Potassium bromide single crystals have been prepared with 10.6-μm 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 non-absorbing 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^- ions per million anions. Incomplete removal of metaborate (BO^-₂) by iodine monobromide or by hexabromobenzene is evident in infrared absorption spectra.

Original language	English (US)
Pages (from-to)	1335-1342
Number of pages	8
Journal	Materials Research Bulletin
Volume	11
Issue number	10
DOIs	https://doi.org/10.1016/0025-5408(76)90040-4
State	Published - Oct 1976

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All Science Journal Classification (ASJC) codes

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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Klein, P. H., Davisson, J. W., & Harrington, J. A. (1976). Potassium bromide for infrared laser windows: Crystal growth, chemical polishing, and optical absorption. Materials Research Bulletin, 11(10), 1335-1342. https://doi.org/10.1016/0025-5408(76)90040-4

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abstract = "Potassium bromide single crystals have been prepared with 10.6-μm 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 non-absorbing 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- ions per million anions. Incomplete removal of metaborate (BO-2) by iodine monobromide or by hexabromobenzene is evident in infrared absorption spectra.",

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N2 - Potassium bromide single crystals have been prepared with 10.6-μm 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 non-absorbing 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- ions per million anions. Incomplete removal of metaborate (BO-2) by iodine monobromide or by hexabromobenzene is evident in infrared absorption spectra.

AB - Potassium bromide single crystals have been prepared with 10.6-μm 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 non-absorbing 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- ions per million anions. Incomplete removal of metaborate (BO-2) by iodine monobromide or by hexabromobenzene is evident in infrared absorption spectra.

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10.1016/0025-5408(76)90040-4