The 30-cm aperture Electra KrF laser amplifier
recently demonstrated 10 hours of continuous laser operation at 2.5 Hz (approximately 90,000 shots) utilizing two electron beams to pump the laser gas.
As the input energy to the amplifier approaches the saturation energy of the amplifier, the achievable energy gain from the laser amplifier
Gould, retired and living in Kinsale, Va., also recently won a 10-year court battle to uphold his patent for an optically pumped laser amplifier
(SN: 3/20/82, p.199).
The HOM can now be safely amplified without destroying the fiber laser amplifier
. Livermore Lab's system then converts this large-area, high-order mode back into the diffraction-limited TEM00 mode with more than 80% efficiency.
Each of the arms is a laser amplifier
chain 137 meters long.