M. Bellini et al., Phase-locked, time-delayed harmonic pulses for high spectral resolution inthe extreme ultraviolet, OPTICS LETT, 26(13), 2001, pp. 1010-1012
We present experiments in the time and frequency domains aimed at confirmin
g the measured mutual phase coherence of time-delayed, collinear harmonic p
ulses. We show that pairs of phase-locked harmonic pulses of medium order c
an be generated for peak intensities up to similar to1.5 10(14) W/cm(2) in
xenon, demonstrating the possibility of performing high-resolution spectros
copy in the extreme ultraviolet with Ramsey-like techniques. (C) 2001 Optic
al Society of America.