Pulse-width and pulse-shape dependencies of laser-induced damage threshold to transparent optical materials

Optical films have been prepared on K9 glass by electronic beam evaporation. Parameters of S-polarized Nd: YAG laser used for pretreatment and damage tests are: wavelength is 355nm, pulse width is 8ns, and incidence angle is 33.75 degree. The results reflect that: the influence of laser pretreatment on laser induced damage threshold of films is uncertain. Laser pretreatment not always improve the laser induced damage threshold of films, and sometimes it will cause negative influence. As for damage probability, for a certain testing energy density, there is an energy density scope, pretreatment pulse with energy density in which can reduce the laser induced damage probability of films. The energy density of laser pretreatment pulse should be selected according to the serving conditions of films.

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

Journal of Applied Physics ◽

10.1063/1.4922353 ◽

2015 ◽

Vol 117 (22) ◽

pp. 223103 ◽

Cited By ~ 53

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

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INFLUENCE OF DEPOSITION TEMPERATURE ON OPTICAL AND LASER-INDUCED DAMAGE PROPERTIES OF LaTiO3 FILMS

Surface Review and Letters ◽

10.1142/s0218625x15500705 ◽

2015 ◽

Vol 22 (06) ◽

pp. 1550070 ◽

Cited By ~ 5

Author(s):

JUNHONG SU ◽

JUNQI XU ◽

CHEN YANG ◽

YAOJIN CHENG

Keyword(s):

Pulse Width ◽

Deposition Temperature ◽

Room Temperature ◽

Damage Threshold ◽

High Energy ◽

Vapor Deposition Technique ◽

Different Temperatures ◽

Thermal Vapor Deposition ◽

Laser Induced Damage ◽

The Relationship

LaTiO 3 films were prepared at room temperature, 60, 140 and 220°C using a thermal vapor deposition technique with an electronic beam gun to investigate the relationship between deposition temperatures and the optical properties of the samples. In the ellipsometric analysis, the corresponding refractive indexes were 1.8993, 1.9123, 1.9197 and 1.9283 at a wavelength of 1064 nm. At the same time, extremely low absorption characteristics of all the samples presented in the visible and IR regions. With the same high-energy testing laser of 200 mJ (about 40 J/cm2) at a wavelength of 1064 nm and a pulse width of 10 ns, the laser-induced damage threshold (LIDT) of the LaTiO 3 samples prepared at different temperatures were 15.5, 16.7, 18.5 and 18.2 J/cm2, respectively. This shows that a higher LIDT may be obtained at higher deposition temperatures.

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Thioborates: potential nonlinear optical materials with rich structural chemistry

Dalton Transactions ◽

10.1039/c6dt04767j ◽

2017 ◽

Vol 46 (13) ◽

pp. 4134-4147 ◽

Cited By ~ 12

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.

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