Waterproof coatings for high-power laser cavities

Xinbin Cheng; Siyu Dong; Song Zhi; Sebastian Paschel; Istvan Balasa; Detlev Ristau; Zhanshan Wang

doi:10.1038/s41377-018-0118-6

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Waterproof coatings for high-power laser cavities

Letters

- Waterproof coatings for high-power laser cavities
- Light: Science & Applications Vol. 8, Issue 1, Pages: 29-34(2019)
- Affiliations：
  
  1.MOE Key Laboratory of Advanced Micro-Structured Materials, Shanghai, 200092, China
  2.Institute of Precision Optical Engineering, School of Physics Science and Engineering, Tongji University, Shanghai, 200092, China
  3.IFSA Collaborative Innovation Center, Shanghai Jiao Tong University, Shanghai, 200240, China
  4.Laser Zentrum Hannover e.V., Laser Components Department, Hannover, 30419, Germany
- Author bio：
  
  Zhanshan Wang (wangzs@tongji.edu.cn)
- Funds：
- DOI：10.1038/s41377-018-0118-6
  CLC：
- Published：2019，
  
  Published Online：23 January 2019，
  
  Received：19 November 2018，
  
  Revised：09 December 2018，
  
  Accepted：17 December 2018
- Accepted：
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Cheng, X. B. et al. Waterproof coatings for high-power laser cavities. Light: Science & Applications, 8, 29-34 (2019).
DOI：

Cheng, X. B. et al. Waterproof coatings for high-power laser cavities. Light: Science & Applications, 8, 29-34 (2019). DOI： 10.1038/s41377-018-0118-6.

摘要

Abstract

With the ever-increasing laser power and repetition rate

thermal control of laser media is becoming increasingly important. Except for widely used air cooling or a bonded heat sink

water cooling of a laser medium is more effective in removing waste heat. However

how to protect deliquescent laser media from water erosion is a challenging issue. Here

novel waterproof coatings were proposed to shield Nd:Glass from water erosion. After clarifying the dependence of

the waterproof property of single layers on their microstructures and pore characteristics

nanocomposites that dope SiO

in HfO

were synthesized using an ion-assisted co-evaporation process to solve the issue of a lack of a high-index material that simultaneously has a dense amorphous microstructure and wide bandgap. Hf

0.7

0.3

/SiO

multifunctional coatings were finally shown to possess an excellent waterproof property

high laser-induced damage threshold (LIDT) and good spectral performance

which can be used as the enabling components for thermal control in high-power laser cavities.

关键词

Keywords

references

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