Share Email Print
cover

Proceedings Paper

Investigation of the high repetition rate picosecond laser induced damage properties of dielectric reflective optical coatings
Author(s): Mingxiao Zhang; Zhongwen Lu; Yunti Pu; Liang Lv; Zhao Qiao; Ping Ma
Format Member Price Non-Member Price
PDF $17.00 $21.00

Paper Abstract

High repetition rate picosecond laser induced damage properties of Ta2O5/SiO2 dielectric reflective optical coatings were investigated. The laser induced damage was attributed to the increase of the free electron density and temperature enhancement during the irradiation of high repetition rate picosecond laser. The correlation of laser induced damage threshold with pulse numbers was researched. At higher repetition rate, the laser induced damage threshold was reduced more with the increasing of pulsed number. We found that the defects absorption played an important role to the laser induced damage properties of dielectric reflective optical coatings. The damage morphology showed that the evolution of damage site was significantly influenced by the accumulation of laser energy. In order to enhance the resistance capacity, the dielectric reflective optical coatings were annealed with temperature of 260°C. The defect absorption was reduced after the annealing process. For the annealed coating, the laser induced damage threshold under high repetition rate picosecond laser was enhanced as a result of the suppression of defects in the coating.

Paper Details

Date Published: 8 July 2019
PDF: 6 pages
Proc. SPIE 11063, Pacific Rim Laser Damage 2019: Optical Materials for High-Power Lasers, 110630Z (8 July 2019); doi: 10.1117/12.2539915
Show Author Affiliations
Mingxiao Zhang, Fine Optical Engineering Research Ctr. (China)
Zhongwen Lu, Fine Optical Engineering Research Ctr. (China)
Yunti Pu, Fine Optical Engineering Research Ctr. (China)
Liang Lv, Fine Optical Engineering Research Ctr. (China)
Zhao Qiao, Fine Optical Engineering Research Ctr. (China)
Ping Ma, Fine Optical Engineering Research Ctr. (China)


Published in SPIE Proceedings Vol. 11063:
Pacific Rim Laser Damage 2019: Optical Materials for High-Power Lasers
Jianda Shao; Takahisa Jitsuno; Wolfgang Rudolph, Editor(s)

© SPIE. Terms of Use
Back to Top
PREMIUM CONTENT
Sign in to read the full article
Create a free SPIE account to get access to
premium articles and original research
Forgot your username?
close_icon_gray