TY - JOUR
T1 - Photoinduced birefringence in azopolymers measured at 1550 nm
AU - Soares, Beatriz
AU - Silva, Susana
AU - Ribeiro, Paulo
AU - Frazão, Orlando
N1 - Funding Information:
info:eu-repo/grantAgreement/FCT/Concurso de avaliação no âmbito do Programa Plurianual de Financiamento de Unidades de I&D (2017%2F2018) - Financiamento Base/UIDB%2F50014%2F2020/PT#
info:eu-repo/grantAgreement/FCT/Concurso para Atribuição do Estatuto e Financiamento de Laboratórios Associados (LA)/LA%2FP%2F0063%2F2020/PT#
info:eu-repo/grantAgreement/FCT//2022.11929.BD/PT#
Publisher Copyright:
© The Authors, published by EDP Sciences.
PY - 2024/10/31
Y1 - 2024/10/31
N2 - Azobenzenes are a class of compounds presenting photoisomerization capabilities that allow the writing and erasure of birefringence along a desired direction. This feature enables applications requiring polarization control, which although have been extensively investigated in the visible light spectrum, poor emphasis has been paid to the infrared region. In this paper, a systematic characterization of induced birefringence creation and relaxation dynamics has been carried out in azopolymers thin films in the infrared telecommunications region of 1550 nm. This study covers both birefringence characterization in terms of wavelength and irradiance of birefringence writing beams. Preliminary results revealed remarkable maximum birefringence values as high as 0.0465 attained during the recording phase, that stabilized at 0.0424 during the relaxation phase, which is quite promising for many applications.
AB - Azobenzenes are a class of compounds presenting photoisomerization capabilities that allow the writing and erasure of birefringence along a desired direction. This feature enables applications requiring polarization control, which although have been extensively investigated in the visible light spectrum, poor emphasis has been paid to the infrared region. In this paper, a systematic characterization of induced birefringence creation and relaxation dynamics has been carried out in azopolymers thin films in the infrared telecommunications region of 1550 nm. This study covers both birefringence characterization in terms of wavelength and irradiance of birefringence writing beams. Preliminary results revealed remarkable maximum birefringence values as high as 0.0465 attained during the recording phase, that stabilized at 0.0424 during the relaxation phase, which is quite promising for many applications.
UR - http://www.scopus.com/inward/record.url?scp=85212503132&partnerID=8YFLogxK
U2 - 10.1051/epjconf/202430910025
DO - 10.1051/epjconf/202430910025
M3 - Conference article
AN - SCOPUS:85212503132
SN - 2101-6275
VL - 309
JO - EPJ Web of Conferences
JF - EPJ Web of Conferences
M1 - 10025
T2 - 2024 EOS Annual Meeting, EOSAM 2024
Y2 - 9 September 2024 through 13 September 2024
ER -