论文标题
极端紫外线瞬态光栅：纳米级光声学的工具
Extreme ultraviolet transient gratings: A tool for nanoscale photoacoustics
论文作者
论文摘要
集体晶格动力学决定了冷凝物质的基本方面，例如弹性和热性能。这些表现出对长度尺度的强烈依赖，反映了晶格激发的显着波动依赖性。极端的紫外线瞬态光栅（EUV TG）方法表明，访问与NM长度尺度10s相对应的波形范围的潜力，代表了与基本物理学和最前沿技术最高相关性的空间尺度，以前是光学TG和其他弹性散射方法无法获得的。在本手稿中，我们在探测物质的热弹性特性的背景下报告了该技术的能力，无论是在批量还是在表面上，并讨论了未来的发展和实际考虑。
Collective lattice dynamics determine essential aspects of condensed matter, such as elastic and thermal properties. These exhibit strong dependence on the length-scale, reflecting the marked wavevector dependence of lattice excitations. The extreme ultraviolet transient grating (EUV TG) approach has demonstrated the potential of accessing a wavevector range corresponding to the 10s of nm length-scale, representing a spatial scale of the highest relevance for fundamental physics and forefront technology, previously inaccessible by optical TG and other inelastic scattering methods. In this manuscript we report on the capabilities of this technique in the context of probing thermoelastic properties of matter, both in the bulk and at the surface, as well as discussing future developments and practical considerations.
