TY - BOOK ID - 32940471 TI - Enhancement Cavities for the Generation of Extreme Ultraviolet and Hard X-Ray Radiation PY - 2018 SN - 3319940090 3319940082 PB - Cham : Springer International Publishing : Imprint: Springer, DB - UniCat KW - Physics. KW - Quantum optics. KW - Optics, Lasers, Photonics, Optical Devices. KW - Classical Electrodynamics. KW - Quantum Optics. KW - Laser pulses, Ultrashort. KW - Laser pulses, Picosecond KW - Light pulses, Picosecond KW - Light pulses, Ultrashort KW - Picosecond laser pulses KW - Picosecond light pulses KW - Ultrashort laser pulses KW - Ultrashort light pulses KW - Laser beams KW - Pulse techniques (Electronics) KW - Picosecond pulses KW - Lasers. KW - Photonics. KW - Optics. KW - Electrodynamics. KW - Optics KW - Photons KW - Quantum theory KW - Dynamics KW - Physics KW - Light KW - New optics KW - Light amplification by stimulated emission of radiation KW - Masers, Optical KW - Optical masers KW - Light amplifiers KW - Light sources KW - Optoelectronic devices KW - Nonlinear optics KW - Optical parametric oscillators UR - https://www.unicat.be/uniCat?func=search&query=sysid:32940471 AB - This thesis discusses the power scaling of ultrashort pulses in enhancement cavities, utilized in particular for frequency conversion processes, such as Thomson scattering and high-harmonic generation. Using custom optics for ultrashort-pulse enhancement cavities, it demonstrates for the first time that at the envisaged power levels, the mitigation of thermal effects becomes indispensable even in cavities comprising solely reflective optics. It also studies cavities with large beams, albeit with low misalignment sensitivity, as a way to circumvent intensity-induced mirror damage. Average powers of several hundred kilowatts are demonstrated, which benefit hard x-ray sources based on Thomson scattering. Furthermore, pulses as short as 30 fs were obtained at more than 10 kW of average power and employed for high-harmonic generation with photon energies exceeding 100 eV at 250 MHz repetition rate, paving the way for frequency comb spectroscopy in this spectral region. ER -