Gas lens laser produced plasma.
A gas lens is used to focus a megawatt ruby laser beam on to a target to create a plasma. By using focal plane photographs and Faraday cup plasma diagnostics, the focusing ability of a gas lens is compared with an equivalent glass lens. In this experiment the gas lens compares favorably when the laser beam has a divergence of ~1 mrad.
Notcutt
M
M
Waltham
J A
JA
Michaelis
M M
MM
Cunningham
P F
PF
Cazalet
R S
RS