Strong-field interactions and nonlinear optics using intense photon sources at extreme wavelengths

由于超快激光技术取得了令人难以置信的进步，强烈的激光-物质相互作用和非线性光学对当今的科学技术产生了重大影响。利用非线性光学现象，科学家们现在可以对活体组织进行亚微米分辨率成像，甚至可以对分子结构进行原子空间分辨率成像。这些技术中的许多都可以使用近红外钛蓝宝石激光技术（中心波长在800纳米）。然而，光子的世界充满了更多的色彩。事实上，申请人的小组已经开发了各种非常规波长的强光源（从x射线到太赫兹（极远红外）辐射），充分利用了INRS先进激光光源的独特激光器。这些强烈的x射线和太赫兹（THz）源现在已经足够强大，可以在这些新波长下探索非线性光学。

Owing largely to the incredible advances in ultrafast laser technology, intense laser-matter interaction and nonlinear optics have had significant impact on present-day science and technology. Using nonlinear optical phenomena, scientists can now perform sub-micron resolution imaging of live tissue, and can even image the structure of molecules with atomic spatial resolution. Many of these techniques are made available using near-infrared Ti:sapphire laser technology (with central wavelength at 800 nm). However, the world of photons is full of much more color. In fact, the applicant's group has developed various intense light sources at unconventional wavelengths (from X-rays to Terahertz (extreme far-infrared) radiation), making full use of the unique lasers available at the Advanced Laser Light Source of the INRS. These intense X-ray and Terahertz (THz) sources are now powerful enough to explore nonlinear optics at these new wavelengths.