Improvement of the Optical Transmission of ZnGeP2 by Nuclear Radiation

核辐射改善 ZnGeP2 的光传输

• 批准号: 9461802
• 负责人: Ilya Zwieback
• 金额: $ 6.49万
• 依托单位: INRAD, Inc.
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-02-01 至 1995-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9461802&HistoricalAwards=false
• 关键词: Improvement; Optical; Transmission; ZnGeP2; Nuclear

This Small Business Innovation Research Phase I project is directed to the improvement of the optical transmission of ZnGeP2 crystals. ZnGeP2 single crystals have the highest figure of merit for use in optical parametric oscillators (OPOs) to generate 3 to 11 micron tunable radiation. However, ZnGeP2 shows an anomalous absorption between 1 and 3 microns, which is the desired spectral region for pumping OPOs. This absorption sharply limits the average power that can be handled by IR OPOs. Although we have found that thermal annealing of ZnGeP2 crystals will improve the optical transmission from 1 to 3 microns, the improvement is not great enough, and it requires an excessive annealing time. INRAD, Inc., proposes to utilize fast electron and gamma ray radiation to improve the optical transmission of ZnGeP2.

这个小企业创新研究第一阶段项目旨在改善ZnGeP2晶体的光传输。ZnGeP2单晶具有用于光学参量振荡器（OPO）的最高品质因数，以产生3至11微米的可调谐辐射。然而，ZnGeP2在1微米和3微米之间显示出异常吸收，这是泵浦OPO所需的光谱区域。这种吸收严重限制了IR OPO可以处理的平均功率。虽然我们已经发现ZnGeP2晶体的热退火将改善1至3微米的光透射率，但改善不够大，并且需要过多的退火时间。INRAD，Inc.，提出利用快电子和伽马射线辐射来改善ZnGeP2的光学透射。