Development of Gallium Arsenide for Infrared Windows.
Final rept. 25 Jun 75-25 Jun 76,
TEXAS INSTRUMENTS INC DALLAS EQUIPMENT GROUP
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A program was initiated to scale-up from 6 by 4 by 0.5 inch to 6 by 12 by 0.5 inch, a GaAs gradient-freeze process for producing gallium arsenide infrared windows. A process was developed that permits the production of gallium arsenide at atmospheric pressure, using a helium vent system. GaAs plates up to 6 by 12 by 0.4 inch were produced by this technique. The atmospheric process also permits further scale-up because ampuls can be easily fabricated and do not require special sizes, shapes and thicknesses. The dndt of gallium arsenide was measured and reported. The transmittance of the plates produced was measured and reported. Author
- Infrared Detection and Detectors
- Solid State Physics