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Thermal and Optical Properties of Polyimide Films with Dispersed SWCNTs for Laser Applications
Author(s) -
Liaw DerJang,
Arutyunyan Natalia R.,
Chiang WeiHung,
Eremina Valentina A.,
Kharitonova Elena P.,
Obraztsova Elena D.
Publication year - 2018
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.201700283
Subject(s) - materials science , polyimide , carbon nanotube , polymer , laser , fabrication , composite material , composite number , absorption (acoustics) , optoelectronics , layer (electronics) , optics , medicine , physics , alternative medicine , pathology
Single‐walled carbon nanotubes (SWCNTs) demonstrate a high efficiency as optical elements for mode‐locking in fiber lasers. A thin polymer film with dispersed nanotubes is a suitable approach to insert the element into the laser resonator. The main problem is that the polymer oxidative destruction temperature is much lower than that for SWCNTs. To form polymer–nanotube composites with a high threshold of thermal degradation, surviving under the relatively intense laser beams, a set of polyimides has been used. It has been shown that for the synthesized polyimides the temperature of degradation was in the range 500–530 °C, depending on the polymer. In the near‐infrared range the polyimides were transparent, and the main absorption bands were detected at wavelengths less than 400 nm. A procedure of the fabrication of composite SWCNT/polyimide films was developed. The films were formed on transparent substrates, as quartz and glass slides.