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物理学报. 2005, 54(10): 4803-4807.
doi: 10.7498/aps.54.4803.
超短超强激光与固体靶相互作用中背表面光发射的实验研究
- 收稿日期: 2005-01-06
- 修回日期: 2005-03-09
- 刊出日期: 2005-05-05
English Abstract
Experimental study of optical emission from the rear surface in ultrashort ultra-intense laser interaction with solid targets
- Received Date:
06 January 2005
- Accepted Date:
09 March 2005
- Published Online:
05 May 2005
Abstract: Optical emission generated by hot electrons passing through solid targets is measured from the rear surface of a metallic foil. The integrated image taken by CC D camera shows that the optical emission forms a ring, on the edge of the ring t here is a bright localized signal, which is the optical transition radiation (OT R). The optical emission spectrum shows a series of sharp nonperiodic peaks bet ween 300—500nm,obviously near 400nm(2ω). The sharp peaks are ascribed to the c oherent transition radiation (CTR) of hot electron-beam microbunching generated by v×B acceleration mechanism. The OTR intensity decreases with the increase of the target thickness.
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