Third harmonic (TH) generation: a tool to study dielectric material properties near the laser induced damage threshold (LIDT)

2019 ◽  
Author(s):  
Amir Khabbazi Oskouei ◽  
Luke Emmert ◽  
Morten Steinecke ◽  
Marco Jupé ◽  
Detlev Ristau ◽  
...  
Keyword(s):  
Material Properties ◽  
Dielectric Material ◽  
Damage Threshold ◽  
Third Harmonic ◽  
Laser Induced Damage

scholarly journals Laser-Induced Point Defects in Fused Silica Irradiated by UV Laser in Vacuum

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Xiaoyan Zhou ◽  
Xinda Zhou ◽  
Jin Huang ◽  
Qiang Cheng ◽  
Fengrui Wang ◽  
...  
Keyword(s):  
Point Defects ◽  
Fluorescence Spectra ◽  
Uv Spectroscopy ◽  
Damage Threshold ◽  
Laser Pulses ◽  
Fused Silica ◽  
Third Harmonic ◽  
Structural Modifications ◽  
Laser Induced Damage ◽  
Induced Defects

High-purity fused silica irradiated by third harmonic of the Nd:YAG laser in vacuum with different laser pulse parameters was studied experimentally. Laser-induced defects are investigated by UV spectroscopy, and fluorescence spectra and correlated to the structural modifications in the glass matrix through Raman spectroscopy. Results show that, for laser fluence below laser-induced damage threshold (LIDT), the absorbance and intensity of fluorescence bands increase with laser energies and/or number of laser pulses, which indicates that laser-induced defects are enhanced by laser energies and/or number of laser pulses in vacuum. The optical properties of these point defects were discussed in detail.

Applying hafnia mixtures to enhance the laser-induced damage threshold of coatings for third-harmonic generation optics

2012 ◽  
Author(s):  
Mathias Mende ◽  
Lars O. Jensen ◽  
Henrik Ehlers ◽  
Stefan Bruns ◽  
Michael Vergöhl ◽  
...  
Keyword(s):  
Harmonic Generation ◽  
Damage Threshold ◽  
Third Harmonic Generation ◽  
Third Harmonic ◽  
Laser Induced Damage

Third harmonic separator with high laser-induced damage threshold

2011 ◽  
Vol 23 (7) ◽  
pp. 1882-1884
Author(s):  
王孝东 Wang Xiaodong ◽  
张锦龙 Zhang Jinlong ◽  
马彬 Ma Bin ◽  
焦宏飞 Jiao Hongfei ◽  
丁涛 Ding Tao ◽  
...  
Keyword(s):  
Damage Threshold ◽  
Third Harmonic ◽  
High Laser ◽  
Laser Induced Damage

Dual wavelength laser-induced damage threshold measurements of alumina/silica and hafnia/silica ultraviolet antireflective coatings

2015 ◽  
Vol 55 (1) ◽  
pp. 104 ◽  
Author(s):  
Marius Mrohs ◽  
Lars Jensen ◽  
Stefan Günster ◽  
Thimotheus Alig ◽  
Detlev Ristau
Keyword(s):  
Damage Threshold ◽  
Dual Wavelength ◽  
Antireflective Coatings ◽  
Dual Wavelength Laser ◽  
Laser Induced Damage
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