Beam combined high energy/high power laser system operating at a repetition rate over 10Hz for laser fusion driver using stimulated Brillouin scattering phase conjugate mirrors

Beam Combined Laser Fusion Driver using Stimulated Brillouin Scattering Phase Conjugation Mirrors

Beam combination method using stimulated Brillouin scattering phase conjugation mirrors (SBSPCMs) is a promising technique for the real laser fusion driver, which can be operated with a high repetition rate over 10 Hz. The phase control of the SBS wave is essential for realization of the coherent beam combined output. For this reason, we proposed a novel “self phase control technique” of the SB...

Stimulated Brillouin Scattering Phase Conjugate Mirror and its Application to Coherent Beam Combined Laser System Producing a High Energy, High Power, High Beam Quality, and High Repetition Rate Output

Analysis of Steady-State Brillouin Nonlinearity in High-Power Fiber Lasers

In the present work, a theoretical analysis of the first-order of stimulatedBrillouin scattering (SBS) in a double-clad (DC) ytterbium (Yb)-doped silica fiber laserin unidirectional pumping mode is presented.An accurate simulation for calculating SBS nonlinearity is performed by considering thecoupled differential rate equations for pump, signal and Stokes powers, as wel...

High Rep-Rate KrF Laser Development and Intense Pulse Interaction Experiments for IFE*

A high repetition-rate e-beam pumped Krypton fluoride (KrF) laser has been developed as a prototype of future IFE driver. A combination of power supply with high voltage magnetic switches and e-beam diode cooled by water and self heat-radiation is generating e-beam at 0.5 Hz. Laser oscillation at 1 Hz with output energy over 20 J is expected in near future. Intense short pulse (> 10 J, ~3 ps) h...

Pulsed 1.55 μm all-fiber laser combining high energy, ultranarrow linewidth and optimal spatial beam quality

In this letter, we report on the study of a new all-fiber laser source suitable for coherent Doppler LIDAR use in the eyesafe domain. The laser consists on a MOPA configuration where the Master Oscillator is a modulated ultranarrow (< 8 kHz) fiber laser. The optical amplifiers are also all-fibered and make use of a new Large Mode Area (LMA) index pedestal fiber that is very effective in limitin...