Observation of laser-induced stress waves and mechanism of structural changes inside rock-salt crystals
Observation of laser-induced stress waves and mechanism of structural changes inside rock-salt crystals
The structural changes inside rock-salt crystals after femtosecond (fs) laser irradiation are investigated using a microscopic pump-probe technique and an elastic simulation. The pump-probe imaging shows that a squircle-shaped stress wave is generated after the fs laser irradiation as a result of the relaxation of thermal stress in the photoexcited region. Pump-probe crossed-Nicols imaging and elastic simulation elucidate that shear stresses and tensile stresses are concentrated in specific regions during the propagation of the stress wave. The shear stresses and tensile stresses observed in this study can explain the characteristic laser-induced structural changes inside rock-salt crystals.
17780-17789
Sakakura, Masaaki
3bb15bbd-d590-4cba-ab5a-862dc7acd054
Tochio, Takaya
93a08d5d-cf9b-45cf-ba44-bfb92ce800fe
Eida, Masaaki
da1f1fa5-2a3e-4e75-afd9-e65a92f27efe
Shimotsuma, Yasuhiko
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Kanehira, Shingo
2d91bcd3-d32f-450e-bab2-b220d6acf183
Nishi, Masayuki
4ccdf7c3-f87c-40ab-9069-02eaee4487ce
Miura, Kiyotaka
5dbc9159-ace0-4dd9-b18d-36f87ae78c47
Hirao, Kazuyuki
5cc5061d-6217-49ae-bc92-ff5b72b9c6c2
29 August 2011
Sakakura, Masaaki
3bb15bbd-d590-4cba-ab5a-862dc7acd054
Tochio, Takaya
93a08d5d-cf9b-45cf-ba44-bfb92ce800fe
Eida, Masaaki
da1f1fa5-2a3e-4e75-afd9-e65a92f27efe
Shimotsuma, Yasuhiko
0664279b-def2-41d4-a5ec-207ce02013a7
Kanehira, Shingo
2d91bcd3-d32f-450e-bab2-b220d6acf183
Nishi, Masayuki
4ccdf7c3-f87c-40ab-9069-02eaee4487ce
Miura, Kiyotaka
5dbc9159-ace0-4dd9-b18d-36f87ae78c47
Hirao, Kazuyuki
5cc5061d-6217-49ae-bc92-ff5b72b9c6c2
Sakakura, Masaaki, Tochio, Takaya, Eida, Masaaki, Shimotsuma, Yasuhiko, Kanehira, Shingo, Nishi, Masayuki, Miura, Kiyotaka and Hirao, Kazuyuki
(2011)
Observation of laser-induced stress waves and mechanism of structural changes inside rock-salt crystals.
Optics Express, 19 (18), .
(doi:10.1364/OE.19.017780).
Abstract
The structural changes inside rock-salt crystals after femtosecond (fs) laser irradiation are investigated using a microscopic pump-probe technique and an elastic simulation. The pump-probe imaging shows that a squircle-shaped stress wave is generated after the fs laser irradiation as a result of the relaxation of thermal stress in the photoexcited region. Pump-probe crossed-Nicols imaging and elastic simulation elucidate that shear stresses and tensile stresses are concentrated in specific regions during the propagation of the stress wave. The shear stresses and tensile stresses observed in this study can explain the characteristic laser-induced structural changes inside rock-salt crystals.
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Published date: 29 August 2011
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No Southampton authors at time of publication
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Local EPrints ID: 431149
URI: http://eprints.soton.ac.uk/id/eprint/431149
ISSN: 1094-4087
PURE UUID: acce5d35-815a-43b0-9e5a-56ff2105d834
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Date deposited: 24 May 2019 16:30
Last modified: 16 Mar 2024 01:56
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Author:
Masaaki Sakakura
Author:
Takaya Tochio
Author:
Masaaki Eida
Author:
Yasuhiko Shimotsuma
Author:
Shingo Kanehira
Author:
Masayuki Nishi
Author:
Kiyotaka Miura
Author:
Kazuyuki Hirao
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