| Original Articles |
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Thermal Stress-Induced Birefringence in Borate Glass Irradiated by Femtosecond Laser Pulses |
| DAI Ye1,2;YU Bing-Kun1,2;LU Bo1,2;QIU Jian-Rong2;YAN Xiao-Na1;JIANG Xiong-Wei2;ZHU Cong-Shan2 |
| 1Department of Physics, College of Sciences, Shanghai University, Shanghai 200444
2Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800 |
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| Cite this article: |
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DAI Ye, YU Bing-Kun, LU Bo et al 2005 Chin. Phys. Lett. 22 2626-2629 |
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Abstract Thermal stress-induced birefringence in borate glass which has been irradiated by 800-nm femtosecond laser pulses is observed under cross-polarized light. Due to the high temperature and pressure formed in the focal volume, the material at the edge of the micro-modified region is compressed between the expanding region and the unheated one, then stress emerges. Raman spectroscopy is used to investigate the stress distribution in the micro-modified region and indicates the redistributions of density and refractive index by Raman peak shift. We suggest that this technique can develop waveguide polarizers and Fresnel zone plates in integrated optics.
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| Keywords:
65.60.+a
78.20.Fm
30.-j
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Published: 01 October 2005
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| PACS: |
65.60.+a
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(Thermal properties of amorphous solids and glasses: heat capacity, thermal expansion, etc.)
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78.20.Fm
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(Birefringence)
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78
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(Optical properties, condensed-matter spectroscopy and other interactions of radiation and particles with condensed matter )
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30.-j
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