Tomography of high harmonic generation in a cluster jet.
Tomographic measurement of high harmonic generation in a cluster jet was demonstrated by programming the cluster density distribution with a laser machining technique. The growth of harmonic energy with the propagation of the pump pulse was resolved by scanning the end of the argon cluster distribution in the path of the pump pulse. A downstream shift of the position of rapid growth and a decrease of the slope with increasing backing pressure as results of changes in the phase-matching condition were observed, which explains the presence of an optimal backing pressure.
Pai
Chih-Hao
CH
Department of Physics, National Taiwan University, Taipei 106, Taiwan.
Kuo
Cheng-Cheng
CC
Lin
Ming-Wei
MW
Wang
Jyhpyng
J
Chen
Szu-yuan
SY
Lin
Jiunn-Yuan
JY