[A measurement of optical emission from the rear surface with solid targets irradiated by ultrashort pulse laser].
Guang Pu Xue Yu Guang Pu Fen Xi
; 26(5): 785-9, 2006 May.
Article
em Zh
| MEDLINE
| ID: mdl-16883836
The integrated image spectrum and scattering light spectrum of optical emission at normal direction from rear-side of a metallic foil were measured, employing optical CCD camera and OMA optical multi-channel spectrometer. The integrated image spectrum shows that it presents a ring-shape, and in the near margin of the ring-shape a bright localized signal is shown, which is optical transition radiation (OTR) generated by hot electrons transport through solid targets. The scattering spectrum shows that it presents a series of nonperiodic sharp spikes between 300-500 nm, and the sharp spike is ascribed to the coherent transition radiation (CTR) generated by bunches of hot electron beams generated in v x B acceleration mechanism near 400 nm (2 omega). The intensity of transition radiation decreases with the increase of the target thickness.
Buscar no Google
Base de dados:
MEDLINE
Idioma:
Zh
Ano de publicação:
2006
Tipo de documento:
Article