Spyrobenzopyran doped core PMMA fibers

Ilkan Cokgor, Alexander S. Dvornikov, Ram Piyaket, Sadik Esener, Peter M. Rentzepis, Dennis W. Garvey, Mark G. Kuzyk

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

Cylindrical PMMA fibers with core regions doped with spirobenzopyran molecules have been fabricated. Spirobenzopyran is a photochromic molecule with two forms: spiropyran and merocyanine. In the fibers, one state could be reverted to the other either by a photo-initiated reaction or by thermal excitation. The fluorescence from the merocyanine form could be generated by exciting the core with a 543nm laser. For spirobenzopyran, higher temperatures favor the reaction from spiropyran form to merocyanine form, hence as temperature increases the merocyanine form concentration in the core increase causing the fluorescence intensity to increase. It was observed that the fluorescence increased fairly linearly over a certain range and started rolling off as the temperature approached to 60°C. Refractive index and material dispersion characteristics of SP/PMMA was also measured. Fluorescence generation in the core by two-photon absorption from 40 ps pulses at 1064 nm has been demonstrated. The energy of the pulses was 1.8 uJ, which gave a peak intensity of 5GW/cm2 in 33um core. A portion of the emitted fluorescence was guided to the end of the fiber and a portion of it escaped the cladding and radiated into the air.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
PublisherSociety of Photo-Optical Instrumentation Engineers
Pages215-223
Number of pages9
Volume3623
ISBN (Print)0819430935
StatePublished - 1999
Externally publishedYes
EventProceedings of the 1999 Organic Photonic Materials and Devices - San Jose, CA, USA
Duration: Jan 25 1999Jan 27 1999

Other

OtherProceedings of the 1999 Organic Photonic Materials and Devices
CitySan Jose, CA, USA
Period1/25/991/27/99

Fingerprint

Fluorescence
fluorescence
fibers
Fibers
Molecules
pulses
Temperature
molecules
Refractive index
Photons
refractivity
temperature
Lasers
air
photons
Air
excitation
lasers
energy

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Cokgor, I., Dvornikov, A. S., Piyaket, R., Esener, S., Rentzepis, P. M., Garvey, D. W., & Kuzyk, M. G. (1999). Spyrobenzopyran doped core PMMA fibers. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 3623, pp. 215-223). Society of Photo-Optical Instrumentation Engineers.

Spyrobenzopyran doped core PMMA fibers. / Cokgor, Ilkan; Dvornikov, Alexander S.; Piyaket, Ram; Esener, Sadik; Rentzepis, Peter M.; Garvey, Dennis W.; Kuzyk, Mark G.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 3623 Society of Photo-Optical Instrumentation Engineers, 1999. p. 215-223.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Cokgor, I, Dvornikov, AS, Piyaket, R, Esener, S, Rentzepis, PM, Garvey, DW & Kuzyk, MG 1999, Spyrobenzopyran doped core PMMA fibers. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 3623, Society of Photo-Optical Instrumentation Engineers, pp. 215-223, Proceedings of the 1999 Organic Photonic Materials and Devices, San Jose, CA, USA, 1/25/99.
Cokgor I, Dvornikov AS, Piyaket R, Esener S, Rentzepis PM, Garvey DW et al. Spyrobenzopyran doped core PMMA fibers. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 3623. Society of Photo-Optical Instrumentation Engineers. 1999. p. 215-223
Cokgor, Ilkan ; Dvornikov, Alexander S. ; Piyaket, Ram ; Esener, Sadik ; Rentzepis, Peter M. ; Garvey, Dennis W. ; Kuzyk, Mark G. / Spyrobenzopyran doped core PMMA fibers. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 3623 Society of Photo-Optical Instrumentation Engineers, 1999. pp. 215-223
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AB - Cylindrical PMMA fibers with core regions doped with spirobenzopyran molecules have been fabricated. Spirobenzopyran is a photochromic molecule with two forms: spiropyran and merocyanine. In the fibers, one state could be reverted to the other either by a photo-initiated reaction or by thermal excitation. The fluorescence from the merocyanine form could be generated by exciting the core with a 543nm laser. For spirobenzopyran, higher temperatures favor the reaction from spiropyran form to merocyanine form, hence as temperature increases the merocyanine form concentration in the core increase causing the fluorescence intensity to increase. It was observed that the fluorescence increased fairly linearly over a certain range and started rolling off as the temperature approached to 60°C. Refractive index and material dispersion characteristics of SP/PMMA was also measured. Fluorescence generation in the core by two-photon absorption from 40 ps pulses at 1064 nm has been demonstrated. The energy of the pulses was 1.8 uJ, which gave a peak intensity of 5GW/cm2 in 33um core. A portion of the emitted fluorescence was guided to the end of the fiber and a portion of it escaped the cladding and radiated into the air.

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