Measurement of ultrafast laser damage threshold on optical materials

Y. J. Li; X. L. Liu; B. B. Sun

doi:10.1117/12.2579691

5 November 2020 Measurement of ultrafast laser damage threshold on optical materials

Y. J. Li, X. L. Liu, B. B. Sun

Proceedings Volume 11562, AOPC 2020: Advanced Laser Technology and Application; 115620T (2020) https://doi.org/10.1117/12.2579691
Event: Applied Optics and Photonics China (AOPC 2020), 2020, Beijing, China

Abstract

Laser damage threshold is one of the most important parameters for optical materials used in ultrafast laser system and the related application system. We have investigated experimentally laser damage threshold on the surface of gold sample induced by femtosecond laser pulses using a so called ablation diameter regression technique. More than one ablation regime, which has logarithmic relationship between the ablated diameter and the laser fluence, has been found. Correspondently, laser damage threshold for gold sample is almost one order of magnitude in difference, from 1.55 J/cm² to 12.01 J/cm² . In our opinion, accurate calibration of the damage threshold for optical components should be done with laser fluence close to the damage threshold.

Citation Download Citation

Y. J. Li, X. L. Liu, and B. B. Sun "Measurement of ultrafast laser damage threshold on optical materials", Proc. SPIE 11562, AOPC 2020: Advanced Laser Technology and Application, 115620T (5 November 2020); https://doi.org/10.1117/12.2579691

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