Characterization of the backscattered radiation from petawatt laser matter interactions.
The development of high peak power and energy laser systems require the assurance that any backscattered radiation will not lead to damage of the laser system. We present the characterization of the backscattered radiation for different target types and conditions at petawatt power levels and intensities (>10(20)W/cm2). We observe that radiation is generated between 700 and 900 nm, as well as the expected self emission and laser fundamental. The percentage of the incident light backscattered reduces as a function of the incident energy and is typically <1% for petawatt laser interactions.
Vernon
Edwina D
ED
Central Laser Facility, Science and Technology Facilities Council, Rutherford Appleton Laboratory, Oxfordshire, UK.
Musgrave
Ian O
IO
Green
James
J
Heathcote
Robert
R
Lancaster
Kate L
KL
Mendes
Cedric
C
Hawkes
Steve J
SJ
Hernandez-Gomez
Cristina
C
Pepler
Dave A
DA