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首页> 外文期刊>Optics Communications: A Journal Devoted to the Rapid Publication of Short Contributions in the Field of Optics and Interaction of Light with Matter >Accurate determination of two-photon absorption coefficients in fused silica and crystalline quartz at 264 nm
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Accurate determination of two-photon absorption coefficients in fused silica and crystalline quartz at 264 nm

机译：准确测定264 nm熔融石英和晶体石英中的两个光子吸收系数

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摘要

Femtosecond UV pulses at the fourth harmonic of Nd:glass laser radiation (λ=264 nm) were used to generate nonlinear absorption measurement in three types of commercial fused silica and one crystalline quartz sample. The two-photon absorption (TPA) coefficient values for fused silica depend on the type and vary between 1.5±0.1×10~(-11) and 2.3±0.2×10~(-11) cm W~(-1). For crystalline quartz a noticeably smaller value of 9.1±0.9×10~(-12) cm W~(-1) was obtained. All TPA coefficient values have been determined with much higher accuracy than before.
机译：使用Nd：玻璃激光辐射（λ= 264 nm）的四次谐波的飞秒UV脉冲在三种类型的商用熔融石英和一种晶体石英样品中进行非线性吸收测量。熔融石英的双光子吸收（TPA）系数值取决于类型，并且在1.5±0.1×10〜（-11）和2.3±0.2×10〜（-11）cm W〜（-1）之间变化。对于结晶石英，获得的值明显较小，为9.1±0.9×10〜（-12）cm W〜（-1）。所有TPA系数值的确定精度都比以前高得多。

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