Photorefractive (PR) strontium barium niobate (SBN) has been the subject of extensive research in recent years. Large PR nonlinearities and relatively fast response time at low power levels make this material a preferred candidate for a variety of applications such as optical data storage. Intensity dependent absorption and related phenomena were discovered and investigated extensively in different PR crystals and at different optical light intensities spanning the range of 1 mW/cm/sup 2/ to 10/sup 4/ W/cm/sup 2/. In this study we investigate the light-induced absorption through pump-probe measurement at relatively low optical power densities in photorefractive SBN:60 and SBN:75.
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机译：近年来，光折变（PR）铌酸锶钡（SBN）成为了广泛研究的主题。大的PR非线性和低功率水平下相对较快的响应时间使该材料成为各种应用（如光学数据存储）的首选候选材料。在不同的PR晶体中以及在1 mW / cm / sup 2 /到10 / sup 4 / W / cm / sup 2 /范围内的不同光强度下，发现并研究了与强度有关的吸收和相关现象。在这项研究中，我们研究了在光折变SBN：60和SBN：75中相对较低的光功率密度下，通过泵浦探针测量得出的光诱导吸收。
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