The effect of laser pulse shape and duration on the size at which damage sites initiate and the implications to subsequent repair.

Growth of laser damage on SiO(2) optical components used in high power lasers can be reduced or eliminated by pre-exposure to pulses of a few hundred ps in duration. Such pre-exposure would cause weak locations on the optics surface to self-identify by initiating very small damage sites. The sites which initiate will be only a few microns in diameter and will have a very low probability of growing even without any further treatment. Repairing damage sites when small is important because both laser mitigation and acid etching are very successful in preventing such small sites from growing.

[1]  O. Landen,et al.  The physics basis for ignition using indirect-drive targets on the National Ignition Facility , 2004 .

[2]  Perry,et al.  Nanosecond-to-femtosecond laser-induced breakdown in dielectrics. , 1996, Physical review. B, Condensed matter.

[3]  Richard P. Hackel,et al.  Enhanced performance of large 3ω optics using UV and IR lasers , 2004, SPIE Laser Damage.

[4]  Michael D. Feit,et al.  Techniques for qualitative and quantitative measurement of aspects of laser-induced damage important for laser beam propagation , 2005 .

[5]  D. C. Emmony,et al.  Pulse-length scaling of laser damage at 249 nm in oxide and fluoride multilayer coatings. , 1993, Optics letters.

[6]  Jean-Luc Rullier,et al.  Initiation of laser-induced damage sites in fused silica optical components. , 2009, Optics express.

[7]  Laurent Lamaignère,et al.  Parametric study of laser-induced surface damage density measurements: Toward reproducibility , 2010 .

[8]  Stavros G. Demos,et al.  High-resolution 3D imaging of surface damage sites in fused silica with optical coherence tomography , 2007, SPIE Laser Damage.

[9]  S G Demos,et al.  Investigation of laser annealing parameters for optimal laser-damage performance in deuterated potassium dihydrogen phosphate. , 2005, Optics letters.

[10]  P. Grua,et al.  Progress in the understanding of fracture related laser damage of fused silica , 2007, SPIE Laser Damage.

[11]  David A Cross,et al.  Growth behavior of laser-induced damage on fused silica optics under UV, ns laser irradiation. , 2010, Optics express.

[12]  Bertrand Bertussi,et al.  SOCRATE: an optical bench dedicated to the understanding and improvement of a laser conditioning process. , 2006, Applied optics.

[13]  J. D. Bude,et al.  Laser-supported solid-state absorption fronts in silica , 2010 .

[14]  S G Demos,et al.  Wavelength dependence of laser-induced damage: determining the damage initiation mechanisms. , 2003, Physical review letters.

[15]  Christopher W. Carr,et al.  Effect of temporal pulse shape on optical damage , 2006 .

[16]  Claude Amra,et al.  Quantitative study of laser damage probabilities in silica and calibrated liquids: comparison with theoretical prediction , 2001, SPIE Laser Damage.

[17]  David A Cross,et al.  Analysis of 1ω bulk laser damage in KDP. , 2011, Applied optics.

[18]  Michael D. Feit,et al.  Pulse length dependence of laser conditioning and bulk damage in KD2PO4 , 2005, SPIE Laser Damage.

[19]  Richard P. Hackel,et al.  Design of a production process to enhance optical performance of 3ω optics , 2004, SPIE Laser Damage.

[20]  P. Miller,et al.  Fracture-induced subbandgap absorption as a precursor to optical damage on fused silica surfaces. , 2010, Optics letters.

[21]  Michael D. Feit,et al.  Size-selection initiation model extended to include shape and random factors , 2005, SPIE Laser Damage.

[22]  Manyalibo J. Matthews,et al.  The effect of laser pulse duration on laser-induced damage in KDP and SiO2 , 2006, SPIE Laser Damage.

[23]  C. Carr,et al.  Effect of multiple wavelengths on laser-induced damage in KH(2-x)DxPO4 crystals. , 2006, Optics letters.

[24]  N. S. Nogar,et al.  Chemical precursor to optical damage detected by laser ionization mass spectrometry , 1988 .

[25]  L. L. Wong,et al.  HF‐Based Etching Processes for Improving Laser Damage Resistance of Fused Silica Optical Surfaces , 2011 .

[26]  Camille Bibeau,et al.  Laser damage initiation and growth of antireflection coated S-FAP crystal surfaces prepared by pitch lap and magnetorheological finishing , 2005, SPIE Laser Damage.

[27]  Timothy L. Weiland,et al.  A large-aperture high-energy laser system for optics and optical component testing , 2004, SPIE Laser Damage.