科研之友
微信
新浪微博
Facebook
分享链接
摘要
Nickel-doped potassium niobate crystals show strong photorefraction in the near-infrared wavelengths from 700 to 800 nm. Two-wave mixing gain coefficients as high as 9 cm(-1) are obtained with the c-face entrance geometry. A very long dark decay time (>1 gear) is observed in this wavelength range, which is of interest for optical storage applications that use diode lasers. Self-pumped phase conjugation is realized. The reflectivity takes values from 32% at 700 nm to 6% at 800 nm. These are the longest wavelengths at which the self-pumped phase conjugation has been observed in KNbO3 at room-temperature operation.
- 出版日期1996-11
- 单位中国科学院物理研究所; 中材人工晶体研究院有限公司
