Nanolaminate-based design for UV laser mirror coatings.

Light, Science & Applications
Meiping ZhuJianda Shao

Abstract

With ever-increasing laser power, the requirements for ultraviolet (UV) coatings increase continuously. The fundamental challenge for UV laser-resistant mirror coatings is to simultaneously exhibit a high reflectivity with a large bandwidth and high laser resistance. These characteristics are traditionally achieved by the deposition of laser-resistant layers on highly reflective layers. We propose a "reflectivity and laser resistance in one" design by using tunable nanolaminate layers that serve as an effective layer with a high refractive index and a large optical bandgap. An Al2O3-HfO2 nanolaminate-based mirror coating for UV laser applications is experimentally demonstrated using e-beam deposition. The bandwidth, over which the reflectance is >99.5%, is more than twice that of a traditional mirror with a comparable overall thickness. The laser-induced damage threshold is increased by a factor of ~1.3 for 7.6 ns pulses at a wavelength of 355 nm. This tunable, nanolaminate-based new design strategy paves the way toward a new generation of UV coatings for high-power laser applications.

References

Jan 26, 2000·Nature·C Macilwain
Oct 12, 2002·Science·Dennis HausmannRoy G Gordon
Jan 8, 2010·Nature
Dec 19, 2015·Nature Materials
Jun 3, 2016·Scientific Reports·Yingjie ChaiJianda Shao
Sep 9, 2017·Scientific Reports·Tomas TolenisAndrius Melninkaitis
Nov 1, 2017·Optics Letters·Thomas WillemsenDetlev Ristau
Dec 17, 2017·Optics Express·Thomas WillemsenDetlev Ristau
Mar 11, 2016·Light, Science & Applications·Sina MalobabicDetlev Ristau
Mar 24, 2017·Light, Science & Applications·Zhong-Wei FanXiong-Xin Tang
Jan 25, 2019·Light, Science & Applications·Xinbin ChengZhanshan Wang
Mar 7, 2019·Light, Science & Applications·Chaoquan HuWeitao Zheng

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Citations

Jan 1, 2021·The Review of Scientific Instruments·B RoshanzadehW Rudolph

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Methods Mentioned

BETA
X-ray
transmission
electron diffraction
transmission electron microscopy

Software Mentioned

Essential Macleod

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