Volume 42 Issue 1
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Dai Fu, Yang Liming. Effects of damaged appearance of coatings on its conditioning during laser conditioning[J]. Infrared and Laser Engineering, 2013, 42(1): 190-194.
Citation: Dai Fu, Yang Liming. Effects of damaged appearance of coatings on its conditioning during laser conditioning[J]. Infrared and Laser Engineering, 2013, 42(1): 190-194.

Effects of damaged appearance of coatings on its conditioning during laser conditioning

  • Received Date: 2012-05-07
  • Rev Recd Date: 2012-06-13
  • Publish Date: 2013-01-25
  • The damage threshold can increase 2-3 times through laser conditioning optical component using the subthreshold laser energy. In the process, it will make the optical component produce damage inevitably, if the damage does not affect the optical performance, which is acceptable in principle. In this paper, the S-on-1 LIDT of hafnia silica multilayer high reflective coatings was introduced firstly. Experimentally, the damage process of optical coatings during laser conditioning was studied. At the same time, the laser damage appearance that affected the optical capability and LIDT of coatings was analyzed. The result is, with the film system of G/(HL)11H2L/A, after laser conditioning for the HfO2/SiO2 multilayer HR coatings, the destroyed of outermost SiO2 coating can not affect its spectrum performance. Reversely, the LIDT of coatings is enhanced sharply because removing the nodula in the next HfO2 coating.
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    [11] Zhao Qiang, Qiu Hong, Liu Ye, et al. Study of laser conditioning of optical coatings with small spot scanning[J]. Acta Optica Sinica, 1999, 19(8): 1105-1109. (in Chinese)
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    [14] 赵强, 裘弘, 刘晔, 等. 光学薄膜的小光斑扫描激光预处理研究[J]. 光学学报, 1999, 19(8): 1105-1109.
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    [16] Dai Fu, Yang Liming. Study on laser energy that irradiate the defect during laser conditioning process[J]. High Power Laser and Particle Beams, 2012, 24(6): 1385-1390. (in Chinese)
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Effects of damaged appearance of coatings on its conditioning during laser conditioning

  • 1. Chengdu Fine Optical Engineering Research Center,Chengdu 610041,China

Abstract: The damage threshold can increase 2-3 times through laser conditioning optical component using the subthreshold laser energy. In the process, it will make the optical component produce damage inevitably, if the damage does not affect the optical performance, which is acceptable in principle. In this paper, the S-on-1 LIDT of hafnia silica multilayer high reflective coatings was introduced firstly. Experimentally, the damage process of optical coatings during laser conditioning was studied. At the same time, the laser damage appearance that affected the optical capability and LIDT of coatings was analyzed. The result is, with the film system of G/(HL)11H2L/A, after laser conditioning for the HfO2/SiO2 multilayer HR coatings, the destroyed of outermost SiO2 coating can not affect its spectrum performance. Reversely, the LIDT of coatings is enhanced sharply because removing the nodula in the next HfO2 coating.

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