Long-term stabilized two beam combination laser system with amplifiers using the phase controlled stimulated Brillouin scattering phase conjugate mirrors

The beam combination method using stimulated Brillouin scattering phase conjugate mirrors is a promising technique for solid state lasers of high power/energy operating with high repetition rate. The key technology of this method is the phase control of the SBS waves. In the previous works, the principle of this phase control technique was demonstrated experimentally. As a next step, in this work, amplifiers have been added to the beam combination system. Inserting the amplifiers, a stabilized phase difference has been obtained with a fluctuation less than λ/50 at 44 mJ total output energy and 10 Hz repetition rate.

[1]  Yun Sup Shin,et al.  Beam Recombination Characteristics in Array Laser Amplification Using Stimulated Brillouin Scattering Phase Conjugation , 1997 .

[2]  H. J. Kong,et al.  Highly repetitive high energy/power beam combination laser: IFE laser driver using independent phase control of stimulated Brillouin scattering phase conjugate mirrors and pre-pulse technique , 2005 .

[3]  Yun Sup Shin,et al.  Beam combination characteristics in an array laser using stimulated Brillouin scattering phase conjugate mirrors considering partial coherency between the beams , 1999 .

[4]  Hong Jin Kong,et al.  Great improvement of phase controlling of the entirely independent stimulated Brillouin scattering phase conjugate mirrors by balancing the pump energies , 2005 .

[5]  Thomas Riesbeck,et al.  Pulsed solid-state laser system with fiber phase conjugation and 315 W average output power , 2001 .

[6]  N. G. Basov,et al.  Influence of certain radiation parameters on wavefront reversal of a pump wave in a Brillouin mirror , 1979 .

[7]  D. A. Rockwell,et al.  A review of phase-conjugate solid-state lasers , 1988 .

[8]  Hong Jin Kong,et al.  Phase control of a stimulated Brillouin scattering phase conjugate mirror by a self-generated density modulation , 2005 .

[9]  R A Fisher,et al.  Phase locking two beams by means of seeded Brillouin scattering. , 1987, Optics letters.

[10]  M. Martinelli.  A universal compensator for polarization changes induced by birefringence on a retracing beam , 1989 .

[11]  Hong Jin Kong,et al.  Long-term stabilized two-beam combination laser amplifier with stimulated Brillouin scattering mirrors , 2008 .

[12]  C R Giuliano,et al.  Coherent coupling of laser gain media using phase conjugation. , 1986, Optics letters.

[13]  Efim Khazanov,et al.  Compensation of birefringence in active elements with a novel Faraday mirror operating at high average power. , 2002, Applied optics.

[14]  Jae Sung Shin,et al.  Laser fusion driver using stimulated Brillouin scattering phase conjugate mirrors by a self-density modulation , 2007 .

[15]  J. W. Yoon,et al.  Long term stabilization of the beam combination laser with a phase controlled stimulated Brillouin scattering phase conjugation mirrors for the laser fusion driver , 2006 .

[16]  Hong Jin Kong,et al.  Long-term stabilization of the phase control technique of the stimulated Brillouin scattering wave for the beam combination technique , 2007, SPIE LASE.

[17]  Hong Jin Kong,et al.  Beam Combination using Stimulated Brillouin Scattering for the Ultimate High Power-Energy Laser System Operating at High Repetition Rate over 10 Hz for Laser Fusion Driver , 2006 .

[18]  Robert W. Boyd,et al.  Phase locking via Brillouin-enhanced four-wave-mixing phase conjugation , 1998 .

[19]  T. Riesbeck,et al.  A high power laser system at 540 nm with beam coupling by second harmonic generation , 2007 .