Measurement of Pockels Effect in Piezoelectric Chiral Polymer Film
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- Tsukiji Mitsuo
- Graduate School of Engineering, Kansai University Uniopt Co., Ltd.
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- Kowa Hiroyuki
- Uniopt Co., Ltd.
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- Muraki Kanae
- Uniopt Co., Ltd.
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- Umeda Norihiro
- Tokyo University of Agriculture and Technology
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- Tajitsu Yoshiro
- Graduate School of Engineering, Kansai University
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Abstract
The possibility has been indicated that a piezoelectric polymer with helical chirality (chiral polymer) such as poly-L-lactic acid (PLLA) shows a large linear electrooptical constant (Pockels effect). However, the linear electrooptical constant of a PLLA film may be very small because such a film fabricated by the conventional method has a complex high-order structure with intermingled crystalline and amorphous regions. In order to measure the small linear electrooptical constant of a PLLA film, we developed a new measurement system, which is based on the heterodyne interferometry principle. In this system, the accuracy of retardation is 0.08 nm and the measurement time is 0.1 s. In our attempt to realize a PLLA film with a large linear electrooptical constant, we fabricated a PLLA film, which was heated to 120°C under 320 MPa. Finally, using our new measurement system, we obtained a linear electrooptical constant of 0.070 pm/V in the PLLA film, which is very small compared with those of other famous Pockels materials. However, the linear electrooptical constant of the PLLA film is clarified in this study for the first time.
Journal
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- Japanese Journal of Applied Physics
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Japanese Journal of Applied Physics 44 (9B), 7115-7118, 2005
The Japan Society of Applied Physics
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Keywords
Details 詳細情報について
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- CRID
- 1390282681245186816
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- NII Article ID
- 210000058855
- 40006898899
- 130004534677
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- NII Book ID
- AA10457675
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- ISSN
- 13474065
- 00214922
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- NDL BIB ID
- 7461061
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed