TY - GEN
T1 - Birefringence analysis of a photonics polymer doped with a birefringent crystal
AU - Yamada, Yukiko
AU - Tagaya, Akihiro
AU - Koike, Yasuhiro
PY - 2009
Y1 - 2009
N2 - The purpose of this study is to design an optimal strontium carbonate (SrCO3) crystal which can effectively compensate the orientational birefringence of polymers. Additionally, we try to compensate large positive birefringence which polycarbonate (PC) exhibits. Furthermore, we analyze the orientational behaviors of the crystals in biaxially drawn polymer films. As a result of the measurement of orientational birefringence of the polymer films doped with SrCO3 with various average sizes and aspect ratios and estimation of orientation function of the crystals, we found out that SrCO 3 with higher aspect ratio and larger size had higher compensation efficiency for the birefringence. As a result of measurement of transparency, we found out that the copolymer film doped with SrCO3 with higher aspect ratio and larger size was less transparent. Therefore, it was suggested that we should design an optimal crystal for particular purposes from the standpoint of the birefringence compensation efficiency and transparency when we apply this method to an optics application. Additionally, we succeed in designing a zero birefringent PC by doping with SrCO3. Furthermore, we found out that SrCO3 was aligned in a perpendicular direction to the thickness direction and was randomly oriented in planar direction in biaxially drawn polymer films.
AB - The purpose of this study is to design an optimal strontium carbonate (SrCO3) crystal which can effectively compensate the orientational birefringence of polymers. Additionally, we try to compensate large positive birefringence which polycarbonate (PC) exhibits. Furthermore, we analyze the orientational behaviors of the crystals in biaxially drawn polymer films. As a result of the measurement of orientational birefringence of the polymer films doped with SrCO3 with various average sizes and aspect ratios and estimation of orientation function of the crystals, we found out that SrCO 3 with higher aspect ratio and larger size had higher compensation efficiency for the birefringence. As a result of measurement of transparency, we found out that the copolymer film doped with SrCO3 with higher aspect ratio and larger size was less transparent. Therefore, it was suggested that we should design an optimal crystal for particular purposes from the standpoint of the birefringence compensation efficiency and transparency when we apply this method to an optics application. Additionally, we succeed in designing a zero birefringent PC by doping with SrCO3. Furthermore, we found out that SrCO3 was aligned in a perpendicular direction to the thickness direction and was randomly oriented in planar direction in biaxially drawn polymer films.
KW - Birefringence
KW - Birefringent crystal dopant method
KW - Orientational birefringence
KW - Polymer
KW - Strontium carbonate
UR - http://www.scopus.com/inward/record.url?scp=67649236582&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=67649236582&partnerID=8YFLogxK
U2 - 10.1117/12.807606
DO - 10.1117/12.807606
M3 - Conference contribution
AN - SCOPUS:67649236582
SN - 9780819474599
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Organic Photonic Materials and Devices XI
T2 - Organic Photonic Materials and Devices XI
Y2 - 27 January 2009 through 29 January 2009
ER -