Comparison of 355-nm nanosecond and 1064-nm picosecond laser-induced damage in high-reflective coatings

Cheng Li; Yuan'an Zhao; Yun Cui; Xiaocong Peng; Chong Shan; Meiping Zhu; Jianguo Wang; Jianda Shao

doi:10.1117/1.OE.57.12.121908

18 December 2018 Comparison of 355-nm nanosecond and 1064-nm picosecond laser-induced damage in high-reflective coatings

Cheng Li, Yuan'an Zhao, Yun Cui, Xiaocong Peng, Chong Shan, Meiping Zhu, Jianguo Wang, Jianda Shao

Author Affiliations +

Optical Engineering, Vol. 57, Issue 12, 121908 (December 2018). https://doi.org/10.1117/1.OE.57.12.121908

Abstract

The damage properties of multilayer coatings tested with 1064-nm 30-ps pulses are similar to those tested with 355 nm, nanosecond pulses. A kind of HfO₂ / SiO₂ high-reflective (HR) coating is prepared by electron beam evaporation. Laser-induced damage of HfO₂ / SiO₂ HR coatings is tested by 355-nm 7-ns pulses and 1064-nm 30-ps pulses, respectively. Damage morphologies and cross-sectional profiles are characterized using a scanning electron microscope and focused ion beam, respectively. The laser-induced damage thresholds and morphologies in the two tests are compared. The developing processes and damage mechanisms are discussed. Many similarities are found in the two tests: the typical damage morphologies in both tests appeared as micrometer-sized pits when irradiated by low-fluence pulses, while it turned out to be layer delamination when irradiated by high-fluence pulses. Damage onset is nearby the peak of the E-field in the two tests. Damage pits in both tests may be related to thermal stress caused by nanometer-sized isolated absorbers. There are also some differences in the damage properties between two tests: damage pits in 1064-nm 30-ps tests have a much higher density than that in 355-nm 7-ns tests. The detail features and the developing processes of the pits are different.

Citation Download Citation

Cheng Li, Yuan'an Zhao, Yun Cui, Xiaocong Peng, Chong Shan, Meiping Zhu, Jianguo Wang, and Jianda Shao "Comparison of 355-nm nanosecond and 1064-nm picosecond laser-induced damage in high-reflective coatings," Optical Engineering 57(12), 121908 (18 December 2018). https://doi.org/10.1117/1.OE.57.12.121908

Received: 13 July 2018; Accepted: 9 November 2018; Published: 18 December 2018

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available