Theoretical simulation analysis of long-pulse laser induced damage in a BK7:SiO2/HfO2 optical anti-reflective films

Wang, Yaode; Ma, Yao; Wang, Di; Su, Ching‐Tzong; Zhang, Xihe; Li, Changli

doi:10.1016/j.ijleo.2017.11.014

Cited by 5 publications

(2 citation statements)

References 12 publications

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“…where n 0 , n s , and λ are the refractive index of the incident medium, the refractive index of the substrate, and the laser wavelength, respectively. The reflectivity of the optical film can be solved by the above two equations [15][16][17].…”

Section: Absorption and Scattering Of Optical Filmmentioning

confidence: 99%

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Experimental Study on the Damage of Optical Materials by out of Band Composite Laser

et al. 2020

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For the paper, experimental studies were performed on the damage of the Ge- and Si-based flat window by lasers out-of-band. The experimental results showed that lasers out-of-band can cause film damage and substrate damage to Ge and Si windows. The high-energy laser damage window mechanism mainly manifested as thermal effects. The composite laser damage thresholds for the substrate were an Si window of 21.6 J/cm2 and a Ge window of 3 J/cm2. Compared with continuous laser and long pulse laser experimental results, it was found that the use of long pulse-continuous composite constitution could effectively reduce the damage threshold. Compared to the long-pulse laser, the composite laser could achieve similar damage effects with a smaller energy density.

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Section: Absorption and Scattering Of Optical Filmmentioning

confidence: 99%

“…where R i is the thermal resistance at the interface between the i and i + 1 films, z i and z i+1 are the positions of the interface, and T i and T i+1 are the temperatures of the two films at the corresponding interfaces. Solving the equations provides the temperature distribution of the optical film [17][18][19][20].…”

Section: Temperature Field Of Optical Filmmentioning

confidence: 99%