Revealing the nature of morphological changes in carbon nanotube-polymer saturable absorber under high-power laser irradiation

Scientific Reports
M A ChernyshevaAleksey Rozhin

Abstract

Composites of single-walled carbon nanotubes (SWNTs) and water-soluble polymers (WSP) are the focus of significant worldwide research due to a number of applications in biotechnology and photonics, particularly for ultrashort pulse generation. Despite the unique possibility of constructing non-linear optical SWNT-WSP composites with controlled optical properties, their thermal degradation threshold and limit of operational power remain unexplored. In this study, we discover the nature of the SWNT-polyvinyl alcohol (PVA) film thermal degradation and evaluate the modification of the composite properties under continuous high-power ultrashort pulse laser operation. Using high-precision optical microscopy and micro-Raman spectroscopy, we have examined SWNT-PVA films before and after continuous laser radiation exposure (up to 40 hours) with a maximum optical fluence of 2.3 mJ·cm-2. We demonstrate that high-intensity laser radiation results in measurable changes in the composition and morphology of the SWNT-PVA film due to efficient heat transfer from SWNTs to the polymer matrix. The saturable absorber modification does not affect the laser operational performance. We anticipate our work to be a starting point for more sophisticated ...Continue Reading

References

Sep 16, 2000·Physical Review Letters·S BerberD Tomanek
Jul 27, 2002·Science·Michael J O'ConnellRichard E Smalley
Aug 11, 2005·Physical Review Letters·Motoo FujiiTetsuo Shimizu
Sep 15, 2005·Nano Letters·Choongho YuArunava Majumdar
Dec 11, 2007·Optics Letters·T A BirksP S Russell
Feb 17, 2009·Optics Express·Samuli KivistöOleg G Okhotnikov
Jan 27, 2010·ACS Nano·Zhipei SunAndrea C Ferrari
Nov 7, 2013·Scientific Reports·Veronika TsatourianSergei K Turitsyn

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Citations

Dec 8, 2020·Biomedical Optics Express·Karina LitvinovaFrancisco Leyva

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Methods Mentioned

BETA
scanning electron microscopy
X-ray

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