Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
University of Chinese Academy of Sciences, Beijing 100049, China.
Molecules. 2021 Dec 24;27(1):85. doi: 10.3390/molecules27010085.
With the advancement of ultra-fast and high-energy pulsed laser output, lasers have caused serious harm to precision instruments and human eyes. Therefore, the development of optical limiting materials with a fast response, low optical limiting threshold, and high damage threshold are important. In this work, for the first time, it is reported that phosphors GdOS:Tb(GOS) displays exceptional functionality in laser protection. GOS with sizes of 11 μm, 1 μm, and 0.45 μm are prepared. Based on the optical limiting and Z-scan technology systems under 532 nm and 1064 nm nanosecond laser excitation, the nonlinear optical properties of GOS are investigated. It is found that GOS exhibits outstanding optical limiting properties. In addition, the optical limiting response of GOS is size-dependent. Concerning the largest particle size, GOS has the best nonlinear optical response, while the precursor shows no nonlinear optical performance. Meanwhile, GOS doped gel glass also displays excellent optical limiting properties with high transmittance, which preliminarily validates the application of GOS and other scintillators in nonlinear optics and encourages more research to better realize the potential of GOS.
随着超快速和高能脉冲激光输出的进步，激光已经对精密仪器和人眼造成了严重的伤害。因此，开发具有快速响应、低光学限制阈值和高损伤阈值的光限制材料非常重要。在这项工作中，首次报道了磷光体 GdOS:Tb(GOS) 在激光保护方面具有优异的功能。制备了尺寸为 11 μm、1 μm 和 0.45 μm 的 GOS。基于 532nm 和 1064nm 纳秒激光激发下的光限制和 Z 扫描技术系统，研究了 GOS 的非线性光学性质。结果表明，GOS 表现出优异的光限制性能。此外，GOS 的光限制响应与尺寸有关。对于最大粒径，GOS 具有最佳的非线性光学响应，而前体则没有表现出非线性光学性能。同时，掺杂 GOS 的凝胶玻璃也表现出优异的光限制性能和高透过率，初步验证了 GOS 及其它闪烁体在非线性光学中的应用，并鼓励更多的研究以更好地实现 GOS 的潜力。
