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

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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.