Spatial beam shaping for high-power frequency tripling lasers based on a liquid crystal spatial light modulator

Abstract We propose and demonstrate a spatial beam shaping method to achieve high-quality near-field for a high-power frequency tripling laser system by using a liquid crystal spatial light modulator (SLM). Considering the nonlinear relationship between the output 3 ω intensity and the input 1 ω intensity of the frequency conversion system and the transmittance nonuniformity of the whole laser system, we introduce an efficient spatial beam shaping method that improves the output near-field beam quality of frequency tripling laser dramatically. Results show that the near-field peak-to-mean value of the frequency tripling laser improves from 1.83:1 to 1.42:1 after spatial beam shaping within four shots. This method provides effective guidance for spatial beam shaping of high-power frequency tripling laser systems.

[1]  C. Cavailler,et al.  Inertial fusion with the LMJ , 2005 .

[2]  Andy J. Bayramian,et al.  Nd:Glass Laser Design for Laser ICF Fission Energy (LIFE) , 2009 .

[3]  R. S. Craxton,et al.  High efficiency frequency tripling schemes for high-power Nd: Glass lasers , 1981 .

[4]  Seung-Whan Bahk,et al.  A high-resolution, adaptive beam-shaping system for high-power lasers. , 2010, Optics express.

[5]  James R Fienup,et al.  Spot-shadowing optimization to mitigate damage growth in a high-energy-laser amplifier chain. , 2008, Applied optics.

[6]  Ivan Bazarov,et al.  Efficient and accurate laser shaping with liquid crystal spatial light modulators , 2014 .

[7]  Jian Wang,et al.  Demonstration of polarization-insensitive spatial light modulation using a single polarization-sensitive spatial light modulator , 2015, Scientific Reports.

[8]  Zhi M Liao,et al.  Growth model for laser-induced damage on the exit surface of fused silica under UV, ns laser irradiation. , 2014, Optics express.

[9]  Christopher W. Carr,et al.  Defect population variability in deuterated potassium di-hydrogen phosphate crystals , 2012 .

[10]  Andre Stesmans,et al.  Defects induced in fused silica by high fluence ultraviolet laser pulses at 355 nm , 2002 .

[11]  Jian Wang,et al.  Arbitrary manipulation of spatial amplitude and phase using phase-only spatial light modulators , 2014, Scientific Reports.

[12]  E I Moses,et al.  The National Ignition Facility and the National Ignition Campaign , 2010, IEEE Transactions on Plasma Science.

[13]  Yanlei Hu,et al.  An improved multi-exposure approach for high quality holographic femtosecond laser patterning , 2014 .

[14]  T. C. Sangster,et al.  Initial Results from the OMEGA EP Laser System , 2009 .

[15]  J. Lindl.  Development of the indirect‐drive approach to inertial confinement fusion and the target physics basis for ignition and gain , 1995 .

[16]  Dexin Ba,et al.  High-quality near-field beam achieved in a high-power laser based on SLM adaptive beam-shaping system. , 2015, Optics express.

[17]  G. Tränkle,et al.  Analysis of material modifications caused by nanosecond pulsed UV laser processing of SiC and GaN , 2008 .

[18]  Jonathan D. Zuegel,et al.  Deployment of a spatial light modulator-based beam-shaping system on the OMEGA EP laser , 2013, Photonics West - Lasers and Applications in Science and Engineering.

[19]  Zhi M Liao,et al.  Probability of growth of small damage sites on the exit surface of fused silica optics. , 2012, Optics express.

[20]  Vincent Bagnoud,et al.  Independent phase and amplitude control of a laser beam by use of a single-phase-only spatial light modulator. , 2004, Optics letters.

[21]  Charles Orth,et al.  Image processing and control of a programmable spatial light modulator for spatial beam shaping , 2013, Photonics West - Lasers and Applications in Science and Engineering.

[22]  Takanori Senoh,et al.  Large size three-dimensional video by electronic holography using multiple spatial light modulators , 2014, Scientific Reports.

[23]  Jerome M. Auerbach,et al.  NIF final optics system: frequency conversion and beam conditioning , 2004, SPIE LASE.

[24]  Zhi M Liao,et al.  Predictive modeling techniques for nanosecond-laser damage growth in fused silica optics. , 2012, Optics express.

[25]  R Fallejo,et al.  Damage modeling and statistical analysis of optics damage performance in MJ-class laser systems. , 2014, Optics express.

[26]  Andrew Forbes,et al.  A digital laser for on-demand laser modes , 2013, Nature Communications.

[27]  J. Zuegel,et al.  Precompensation of gain nonuniformity in a Nd:glass amplifier using a programmable beam-shaping system , 2014 .

[28]  T. Suratwala,et al.  Dynamics of defects in Ce³⁺ doped silica affecting its performance as protective filter in ultraviolet high-power lasers. , 2014, Optics express.