18 November 1989 Window Materials for 280 GHz Continuous Wave Gyrotron
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Proceedings Volume 1039, 13th Intl Conf on Infrared and Millimeter Waves; (1989) https://doi.org/10.1117/12.978770
Event: 13th International Conference on Infrared and Millimeter Waves, 1987, Honolulu, HI, United States
Abstract
The high frequency absorption in crystalline and polycrystalline materials arises mainly from sharp lattice vibrations, or due to the tail effect of the intense lattice vibration absorption peak. In polycrystalline material there are also other sources of absorption such as amorphous region continuum. A monatomic material such as diamond or diamond like silicon has a simple cubic structure and the lattice vibration absorption peak appears at a very high frequency (Infrared frequency region 20,000 - 40,000 GHz). The 280 GHz region is then completely free from the tail effect of lattice vibration absorption peak. If one can prepare a specimen of such a material in which other millimeter wave absorption processes are compensated, the window will have negligible absorption at 280 GHz.
© (1989) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Mohammed Nurul Afsar, "Window Materials for 280 GHz Continuous Wave Gyrotron", Proc. SPIE 1039, 13th Intl Conf on Infrared and Millimeter Waves, (18 November 1989); doi: 10.1117/12.978770; https://doi.org/10.1117/12.978770
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