High Intensity Coherent Extreme Ultraviolet and Soft X-Ray Source (pp. 137-178)
Authors: (Lap Van Dao, Centre for Atom Optics and Ultrafast Spectroscopy and Australia Research Council Centre of Excellence for Coherent X-Ray Science, Swinburne University of Technology, Melbourne, Australia)
Abstract: Since the first generation of high-order harmonic radiation in 1987, femtosecond
laser driven high-harmonic generation sources have become an increasingly important
supply of coherent extreme-ultraviolet radiation and soft x-rays down to the water
window (4.4 to 2.3 nm) and the keV-regime. Ultrashort extreme ultraviolet pulses of
reasonable brightness and high coherence are used in various applications. We present in
this chapter the physical background and technical requirements to generate the highorder
harmonics with high photon flux. The high power femtosecond laser system and
other necessary equipment for high harmonic generation experiments are discussed.
Phase-matched high-order harmonic emission from different configurations including
from a semi-infinite gas cell in the spatial and spectral domains are presented.