Photothermal effects in semiconductors induced by surface absorption of a uniform laser radiation under modified Green-Lindsay theory

2021 ◽  
Vol 136 (9) ◽  
Author(s):  
Ismail M. Tayel ◽  
Kh. Lotfy
Keyword(s):  
Laser Radiation ◽  
Surface Absorption ◽  
Photothermal Effects

scholarly journals Thermoelastic Response Induced by Volumetric Absorption of Uniform Laser Radiation in a Half-Space

Coatings ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 228 ◽  
Author(s):  
Ismail M. Tayel
Keyword(s):  
Laser Radiation ◽  
Half Space ◽  
Integral Transform ◽  
Pulsed Laser ◽  
Phase Lag ◽  
Dual Phase ◽  
Temperature Dependent ◽  
Surface Absorption ◽  
Pulsed Laser Radiation ◽  
Thermoelastic Response

In this paper, the thermoelastic response in a generalized thermoelastic half-space induced by absorption of a penetrating pulsed laser radiation inside the medium is studied using the generalized theory with Dual-Phase-Lag (DPL). The surface of the target is considered stresses free and exposed to temperature-dependent heat losses. Laplace integral transform is used analytically for obtaining the general solution, while its inverse is carried out numerically. The copper element is used as an application to compare the predictions induced by volumetric absorption of the Dual-Phase-lag theory with those for Lord–Shulman (LS) and classical coupled (CTE) theories, moreover the response induced by volumetric absorption for (LS) and (CTE) models in this work were compared with those induced by surface absorption in a previous work.

scholarly journals Акустические колебания алюминиевых мембран при лазерном возбуждении по термоупругому механизму

2020 ◽  
Vol 46 (10) ◽  
pp. 18
Author(s):  
А.Л. Глазов ◽  
К.Л. Муратиков
Keyword(s):  
Laser Radiation ◽  
Theoretical Model ◽  
Photoacoustic Signal ◽  
Frequency Range ◽  
Surface Absorption ◽  
Membrane Vibrations ◽  
Theoretical Results ◽  
Good Agreement

A theoretical model of the formation of a photoacoustic signal from metal membranes by laser radiation is proposed taking into account the excitation of defective states in them. The theoretical results obtained are compared for aluminum membranes with a thickness of 197 μm in the frequency range from 20 Hz to 7 kHz when they are excited by laser radiation with a wavelength of 660 nm. It is shown that the proposed theoretical model ensures good agreement between the experimental and theoretical results for membrane vibrations with a purely surface absorption of laser radiation.

PHASE CONJUGATION OF KrF LASER RADIATION

1983 ◽  
Vol 44 (C2) ◽  
pp. C2-19-C2-25
Author(s):  
M. C. Gower ◽  
R. G. Caro
Keyword(s):  
Laser Radiation ◽  
Phase Conjugation ◽  
Krf Laser

HEATING OF CRYSTALLINE AND AMORPHOUS SILICON BY C-SWITCHED LASER RADIATION

1980 ◽  
Vol 41 (C4) ◽  
pp. C4-31-C4-36
Author(s):  
J. R. Meyer ◽  
F. J. Bartoli ◽  
M. R. Kruer
Keyword(s):  
Laser Radiation ◽  
Amorphous Silicon
Sign in / Sign up

Export Citation Format

Share Document