Wavelength dependence of femtosecond laser-induced damage threshold of optical materials

2015 ◽  
Vol 117 (22) ◽  
pp. 223103 ◽  
Author(s):  
L. Gallais ◽  
D.-B. Douti ◽  
M. Commandré ◽  
G. Batavičiūtė ◽  
E. Pupka ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Optical Materials ◽  
Damage Threshold ◽  
Wavelength Dependence ◽  
Laser Induced Damage

Femtosecond laser induced damage threshold (LIDT) of 3D nanolithography made micro- and nano-optical elements

2019 ◽  
Author(s):  
Agnė Butkutė ◽  
Linas Jonušauskas ◽  
Darius Gailevičius ◽  
Vygantas Mizeikis ◽  
Mangirdas Malinauskas
Keyword(s):  
Femtosecond Laser ◽  
Damage Threshold ◽  
Optical Elements ◽  
Laser Induced Damage

Thioborates: potential nonlinear optical materials with rich structural chemistry

2017 ◽  
Vol 46 (13) ◽  
pp. 4134-4147 ◽  
Author(s):  
Yu-kun Lian ◽  
Li-Ming Wu ◽  
Ling Chen
Keyword(s):  
Optical Materials ◽  
Nonlinear Optical ◽  
Damage Threshold ◽  
Structural Diversity ◽  
Optical Nonlinearity ◽  
Structural Chemistry ◽  
Nonlinear Optical Materials ◽  
Three Dimension ◽  
Structural Motifs ◽  
Laser Induced Damage

This review summarizes thioborates and their structural motifs ranging from zero-dimension to three-dimension. The most commonly observed building units of these examples are planar-triangle BS3 and tetrahedron BS4. Thioborates possess advantages with respect to their structural diversity, optical nonlinearity, laser-induced damage threshold and transparency range, and represent potentially a rich supply of new nonlinear optical materials.

scholarly journals Femtosecond laser-induced damage threshold of nematic liquid crystals at 1030  nm

2021 ◽  
Vol 60 (26) ◽  
pp. 8050
Author(s):  
Loic Ramousse ◽  
Gilles Chériaux ◽  
Cyrille Claudet ◽  
Aurélie Jullien
Keyword(s):  
Liquid Crystals ◽  
Femtosecond Laser ◽  
Nematic Liquid Crystals ◽  
Damage Threshold ◽  
Laser Induced Damage

Wavelength Dependence of the Laser-Induced Damage Threshold of α-Al2O3

2016 ◽  
Author(s):  
Haruyuki Sakurai ◽  
Yo Iida ◽  
Akira Mizutani ◽  
Kuniaki Konishi ◽  
Junji Yumoto ◽  
...  
Keyword(s):  
Damage Threshold ◽  
Wavelength Dependence ◽  
Laser Induced Damage ◽  
Α Al2o3

scholarly journals Observation and analysis of structural changes in fused silica by continuous irradiation with femtosecond laser light having an energy density below the laser-induced damage threshold

2014 ◽  
Vol 5 ◽  
pp. 1334-1340 ◽  
Author(s):  
Wataru Nomura ◽  
Tadashi Kawazoe ◽  
Takashi Yatsui ◽  
Makoto Naruse ◽  
Motoichi Ohtsu
Keyword(s):  
Molecular Structure ◽  
Energy Density ◽  
Femtosecond Laser ◽  
Laser Light ◽  
Damage Threshold ◽  
Fused Silica ◽  
Optical Component ◽  
Continuous Irradiation ◽  
Silica Substrate ◽  
Laser Induced Damage

The laser-induced damage threshold (LIDT) is widely used as an index for evaluating an optical component’s resistance to laser light. However, a degradation in the performance of an optical component is also caused by continuous irradiation with laser light having an energy density below the LIDT. Therefore, here we focused on the degradation in performance of an optical component caused by continuous irradiation with femtosecond laser light having a low energy density, i.e., laser-induced degradation. We performed an in situ observation and analysis of an increase in scattering light intensity in fused silica substrates. In experiments conducted using a pulsed laser with a wavelength of 800 nm, a pulse width of 160 fs and pulse repetition rate of 1 kHz, we found that the scattered light intensity increased starting from a specific accumulated fluence, namely, that the laser-induced degradation had a threshold. We evaluated the threshold fluence F t as 6.27 J/cm2 and 9.21 J/cm2 for the fused silica substrates with surface roughnesses of 0.20 nm and 0.13 nm in R a value, respectively, showing that the threshold decreased as the surface roughness increased. In addition, we found that the reflected light spectrum changed as degradation proceeded. We analyzed the details of the degradation by measuring instantaneous reflectance changes with a pump–probe method; we observed an increase in the generation probability of photogenerated carriers in a degraded silica substrate and a damaged silica substrate and observed a Raman signal originating from a specific molecular structure of silica. From these findings, we concluded that compositional changes in the molecular structure occurred during degradation due to femtosecond laser irradiation having an energy density below the LIDT.

scholarly journals Femtosecond laser-induced damage threshold of electron beam deposited dielectrics for 1-m class optics

2016 ◽  
Vol 56 (1) ◽  
pp. 011001 ◽  
Author(s):  
Adrien Hervy ◽  
Laurent Gallais ◽  
Gilles Chériaux ◽  
Daniel Mouricaud
Keyword(s):  
Electron Beam ◽  
Femtosecond Laser ◽  
Damage Threshold ◽  
Laser Induced Damage

scholarly journals New strategy for designing promising mid-infrared nonlinear optical materials: narrowing the band gap for large nonlinear optical efficiencies and reducing the thermal effect for a high laser-induced damage threshold

2018 ◽  
Vol 9 (26) ◽  
pp. 5700-5708 ◽  
Author(s):  
Shu-Fang Li ◽  
Xiao-Ming Jiang ◽  
Yu-Hang Fan ◽  
Bin-Wen Liu ◽  
Hui-Yi Zeng ◽  
...  
Keyword(s):  
Thermal Effect ◽  
Optical Materials ◽  
Nonlinear Optical ◽  
Damage Threshold ◽  
Nonlinear Optical Materials ◽  
Mid Infrared ◽  
High Laser ◽  
New Strategy ◽  
Nlo Materials ◽  
Laser Induced Damage

A new strategy towards the search for practical IR NLO materials not restricted by the NLO–LIDT incompatibility is verified.

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