Gigashot optical degradation in silica optics at 351 nm.

作者: Sonny Ly , Ted A. Laurence , Nan Shen , Bill Hollingsworth , Mary Norton

DOI: 10.1364/OE.23.004074

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摘要: As applications of lasers demand higher average powers, repetition rates, and longer operation times, optics will need to perform well under unprecedented conditions. We investigate the optical degradation fused silica surfaces at 351 nm for up 109 pulses with pulse fluences 12 J/cm2. The central result is that transmission loss from defect generation a function intensity, Ip, total integrated fluence, φT, influenced by oxygen partial pressure. In 10−6 Torr vacuum, low observed increases monotonically as number pulses. intensity above 13 MW/cm2, losses decrease, are not measureable 130 MW/cm2. A physical model which supports experimental data presented describe suppression high intensity. Similar phenomena in anti-reflective sol-gel coated optics. Absorption, scattering, primary mechanism leading loss. 2.5 air, no was detected any used. find absorption layer leads less than 1 thickness, results laser-activated chemical process involving photo-reduction within few monolayers surface. competition between photo-oxidation explains measured data: reduced when either light or O2 concentration high. expect processes similar these occur other materials power applications.

参考文章(18)
A. Bayramian, S. Aceves, T. Anklam, K. Baker, E. Bliss, C. Boley, A. Bullington, J. Caird, D. Chen, R. Deri, M. Dunne, A. Erlandson, D. Flowers, M. Henesian, J. Latkowski, K. Manes, W. Molander, E. Moses, T. Piggott, S. Powers, S. Rana, S. Rodriguez, R. Sawicki, K. Schaffers, L. Seppala, M. Spaeth, S. Sutton, S. Telford, Compact, Efficient Laser Systems Required for Laser Inertial Fusion Energy Fusion Science and Technology. ,vol. 60, pp. 28- 48 ,(2011) , 10.13182/FST10-313
D. Poulios, O. Konoplev, F. Chiragh, A. Vasilyev, M. Stephen, K. Strickler, Performance of multilayer optical coatings under long-term 532nm laser exposure Laser-Induced Damage in Optical Materials: 2013. ,vol. 8885, pp. 888523- ,(2013) , 10.1117/12.2030458
Ted A. Laurence, Jeff D. Bude, Nan Shen, Theodore Feldman, Philip E. Miller, William A. Steele, Tayyab Suratwala, Metallic-like photoluminescence and absorption in fused silica surface flaws Applied Physics Letters. ,vol. 94, pp. 151114- ,(2009) , 10.1063/1.3119622
Ian M. Thomas, High laser damage threshold porous silica antireflective coating Applied Optics. ,vol. 25, pp. 1481- 1483 ,(1986) , 10.1364/AO.25.001481
Ted A. Laurence, Jeff D. Bude, Sonny Ly, Nan Shen, Michael D. Feit, Extracting the distribution of laser damage precursors on fused silica surfaces for 351 nm, 3 ns laser pulses at high fluences (20-150 J/cm 2 ) Optics Express. ,vol. 20, pp. 11561- 11573 ,(2012) , 10.1364/OE.20.011561
Johannes Moll, Paul M. Schermerhorn, Excimer-laser-induced absorption in fused silica Proceedings of SPIE, the International Society for Optical Engineering. ,vol. 3679, pp. 1129- 1136 ,(1999) , 10.1117/12.354319
Mike Dunne, A high-power laser fusion facility for Europe Nature Physics. ,vol. 2, pp. 2- 5 ,(2006) , 10.1038/NPHYS208
Frank R. Wagner, Céline Gouldieff, Jean-Yves Natoli, Contrasted material responses to nanosecond multiple-pulse laser damage: from statistical behavior to material modification Optics Letters. ,vol. 38, pp. 1869- 1871 ,(2013) , 10.1364/OL.38.001869
Philipp Kukura, Michele Celebrano, Alois Renn, Vahid Sandoghdar, Single-Molecule Sensitivity in Optical Absorption at Room Temperature Journal of Physical Chemistry Letters. ,vol. 1, pp. 3323- 3327 ,(2010) , 10.1021/JZ101426X
Ted A. Laurence, Jeff D. Bude, Nan Shen, William A. Steele, Sonny Ly, Quasi-continuum photoluminescence: Unusual broad spectral and temporal characteristics found in defective surfaces of silica and other materials Journal of Applied Physics. ,vol. 115, pp. 083501- ,(2014) , 10.1063/1.4866422