Dependence of ion charge-energy emission from Nd:YAG-laser-produced plasma on laser intensity in the 0.4–40×1010 W/cm2 range

Laser wavelength effects on the charge state resolved ion energy distributions from laser-produced Sn plasma

distributions from laser-produced Sn plasma Russell A. Burdt, Yezheng Tao, Mark S. Tillack, Sam Yuspeh, Nek M. Shaikh, Eli Flaxer, and Farrokh Najmabadi Center for Energy Research, University of California San Diego, La Jolla, California 92093, USA Electrical and Computer Engineering, University of California San Diego, La Jolla, California 92093, USA AFEKA Tel-Aviv Academic College of Engineer...

Effect of prepulse laser wavelength on EUV emission from CO2 reheated laser-produced Sn plasma

We investigated the role of prepulse laser wavelength on extreme-ultraviolet (EUV) emission and ionic debris generation. A 6 ns Nd:YAG laser operating at 266 nm was used to generate a pre-plasma that was then reheated by a 35 ns CO2 laser pumping pulse at 10.6 μm. At an ideal delay time, improvement in EUV conversion efficiency (CE) of up to 30 % was seen compared to the CE from the pumping pul...

Characteristics of Ions Emission from Ultrashort Laser Produced Plasma

The dynamic characteristics of the ions emitted from ultrashort laser interaction with materials were studied. A series of successive experiments were conducted for six different elements (C, Al, Cu, Mo, Gd, and W) using 40 fs, 800 nm Ti: Sapphire laser. Time-of-flight (TOF) ion profile was analyzed and charge emission dependencies were investigated. The effects of incident laser interaction wi...

X-ray Emission Spectra from Laser-produced Cobalt Plasma

Late-time particle emission from laser-produced graphite plasma

We report a late-time “fireworks-like” particle emission from laser-produced graphite plasma during its evolution. Plasmas were produced using graphite targets excited with 1064 nm Nd: yttrium aluminum garnet (YAG) laser in vacuum. The time evolution of graphite plasma was investigated using fast gated imaging and visible emission spectroscopy. The emission dynamics of plasma is rapidly changin...