Seeding of a soft-x-ray laser in a plasma waveguide by high harmonic generation.
A strongly saturated waveguide-based optical-field-ionization soft-x-ray laser seeded by high harmonic generation was demonstrated for Ni-like Kr lasing at 32.8 nm. Compared with the same laser seeded only with spontaneous emission, seeding with high harmonics yields much smaller divergence, enhanced spatial coherence, and controlled polarization. The integration of high harmonic seeding, optically preformed plasma waveguide, and optical-field-ionization pumping forms one of the optimal archetypes of an ultrashort-pulse soft-x-ray laser.
Lin
Ping-Hsun
PH
Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei 106, Taiwan.
Chou
Ming-Chang
MC
Jiang
Ming-Jhe
MJ
Tseng
Po-Chang
PC
Chu
Hsu-Hsin
HH
Lin
Jiunn-Yuan
JY
Wang
Jyhpyng
J
Chen
Szu-Yuan
SY