LLNL researchers developed a driver design for IFE-class lasers that allow for simultaneous high energy and high repetition rate operations.  The LLNL invention integrates an amplifier head featuring a mosaic architecture with a modified high power diode delivery system that is designed to achieve uniform and geometry-match illumination of the mosaic structured amplifier module. 

This LLNL invention proposes a new microstructured large mode area fiber design that enhances the confinement of the core mode while strongly suppressing thermal or scattering mediated dynamic couplings with higher order modes thought to be responsible for generating undesirable Transverse Mode Instabilities. The design accomplishes higher order mode suppression and core mode confinement by…

Livermore Lab's SBC grating optics benefit from the combination of the following key technologies:

• LLNL proprietary optical coating designs utilizing >100 thin film layers – enables ultra-low-loss, ppm transmission levels through the coating, high diffraction efficiency, and large bandwidth.
• LLNL proprietary dispersive surface relief structure…