Experimental investigation of the scattering of laser radiation affiliated with its destructive action on absorbing materials

1977 ◽  
Vol 27 (6) ◽  
pp. 1535-1538
Author(s):  
L. Ya. Min'ko ◽  
A. N. Chumakov
Keyword(s):  
Experimental Investigation ◽  
Laser Radiation ◽  
Destructive Action ◽  
Absorbing Materials

EXPERIMENTAL INVESTIGATION OF THE EFFECT OF LASER RADIATION ON EVAPORATION OF A LIQUID

2021 ◽  
Author(s):  
V. I. Trushlyakov ◽  
◽  
A. A. Novikov ◽  
I. Yu. Lesnyak ◽  
A. P. Averchenkо ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Laser Radiation

Для проведения исследования процесса испарения модельной жидкости (МЖ) при воздействии лазерного излучения (ЛИ) разработано два экспериментальных образца (ЭО) в виде ёмкостей с МЖ: экспериментальная ёмкость с прозрачными стенками ЭО1 и экспериментальная ёмкость из металла ЭО2, как прототип будущей пористой структуры. Исследованы процессы испарения МЖ при постоянном и дискретном ЛИ различной мощности. Разработана программа и методика проведения экспериментальных исследований и получены предварительные результаты процессов испарения МЖ в том числе: текущая масса и температура для ЭО1, ЭО2. Показано преимущество дискретного режима воздействия ЛИ над постоянным режимом ЛИ. При дискретном режиме ЛИ на расстоянии 10 мм между фокусом ЛИ и поверхностью ЭО2 при мощности ЛИ 60 Вт испарилось МЖ на 4% больше, чем при постоянном ЛИ, а при мощности ЛИ 90 Вт испарилось МЖ на 22 % больше, чем при постоянном ЛИ.

An Experimental Investigation of Sample–Fluid Heat Coupling Effect in Thermal Lens Technique

2020 ◽  
Vol 74 (10) ◽  
pp. 1274-1279
Author(s):  
Gustavo V.B. Lukasievicz ◽  
Leandro S. Herculano ◽  
Elizandra Sehn ◽  
Marcos P. Belançon ◽  
Stephen E. Bialkowski ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Thermal Lens ◽  
Coupling Effect ◽  
Coupling Model ◽  
Theoretical Description ◽  
Photothermal Effect ◽  
Wavefront Distortion ◽  
Absorbing Materials ◽  
Heated Area ◽  
Long Rod

Laser-induced wavefront distortion is detectable by several techniques based on the photothermal effect. The effect is probed by monitoring the phase shift caused by the bulging of the heated area, the photoelastic effects, and the spatial distribution of the refractive index within the sample and in the fluid surrounding it. A simple analytical solution for the wavefront distortion was only possible for low absorbing materials, with the assumption that the stresses obey either the thin-disk or the long-rod type distributions. Recently, a unified theoretical description for the laser-induced optical path change was proposed to overcome part of this limitation for weakly absorbing materials, regardless of its thickness. In this work, we perform an experimental investigation taking the sample–fluid heat coupling effect into account using the thermal lens technique. The experimental investigation presented here validates the unified model. In addition, we show that the heat-coupling model provides an alternative method to obtain physical properties of non-absorbing fluid by using a reference solid sample.

Some effects of the rhodamine laser radiation on absorbing materials

1972 ◽  
Vol 1 (5) ◽  
pp. 524-527
Author(s):  
V K Goncharov ◽  
L Ya Min'ko ◽  
S A Mikhnov ◽  
V S Strizhnev
Keyword(s):  
Laser Radiation ◽  
Absorbing Materials

Experimental investigation of cutting performance for different material compositions of Cr/Ni-steel with 1 μm laser radiation

2018 ◽  
Vol 30 (3) ◽  
pp. 031501 ◽  
Author(s):  
Cindy Goppold ◽  
Franz Urlau ◽  
Thomas Pinder ◽  
Patrick Herwig ◽  
Andrés F. Lasagni
Keyword(s):  
Experimental Investigation ◽  
Laser Radiation ◽  
Cutting Performance
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