Resonant excitation of ethylene molecules in the combustion flame CVD of diamond using a wavelength tunable CO 2 laser

Z. Q. Xie, J. B. Park, X. N. He, Y. Gao, Y. S. Zhou, Yongfeng Lu

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

Abstract

CO 2 laser resonant excitations of precursor molecules were applied in combustion flame synthesis of diamond films. The combustion flame was produced from a mixture of ethylene (C 2 H 4 ), acetylene (C 2 H 2 ) and oxygen (O 2 ). A wavelength-tunable CO 2 laser with wavelength range from 9.2 to 10.9 μm was used for wavelength-matched excitation of the ethylene molecules. By irradiating the flame using CO 2 laser at 10.532 μm, the ethylene molecules were resonantly excited through the CH 2 wagging vibrational mode (ν 7 , 949.3 cm -1 ). Irradiation of the flame using the common CO 2 laser wavelength at 10.591 μm was also carried out for comparison. It was found that diamond synthesis was more obviously enhanced by the CO 2 laser resonant excitation at 10.532 μm as compared to that at 10.591 μm. Firstly, the flame was shortened by 50%, indicating a promoted reaction in the process. Secondly, the diamond grain sizes as well as the diamond film thicknesses were increased by 200~300% and 160% respectively, indicating a higher growth rate of diamond films. Finally, Raman spectra of the diamond sample showed a sharp diamond peak at 1334 cm -1 and a suppressed G-band, indicating higher diamond quality.

Original languageEnglish (US)
Title of host publicationLaser-based Micro- and Nanopackaging and Assembly IV
DOIs
StatePublished - May 7 2010
EventLaser-based Micro- and Nanopackaging and Assembly IV - San Francisco, CA, United States
Duration: Jan 26 2010Jan 28 2010

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume7585
ISSN (Print)0277-786X

Conference

ConferenceLaser-based Micro- and Nanopackaging and Assembly IV
CountryUnited States
CitySan Francisco, CA
Period1/26/101/28/10

Fingerprint

Diamond
Ethylene
Carbon Monoxide
Flame
Strombus or kite or diamond
Combustion
Chemical vapor deposition
flames
Diamonds
ethylene
Excitation
diamonds
Molecules
vapor deposition
Wavelength
Laser
Diamond films
diamond films
Lasers
wavelengths

Keywords

  • Diamond
  • Resonant excitation
  • Tunable CO laser
  • Vibrational modes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

Xie, Z. Q., Park, J. B., He, X. N., Gao, Y., Zhou, Y. S., & Lu, Y. (2010). Resonant excitation of ethylene molecules in the combustion flame CVD of diamond using a wavelength tunable CO 2 laser In Laser-based Micro- and Nanopackaging and Assembly IV [758509] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 7585). https://doi.org/10.1117/12.843904

Resonant excitation of ethylene molecules in the combustion flame CVD of diamond using a wavelength tunable CO 2 laser . / Xie, Z. Q.; Park, J. B.; He, X. N.; Gao, Y.; Zhou, Y. S.; Lu, Yongfeng.

Laser-based Micro- and Nanopackaging and Assembly IV. 2010. 758509 (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 7585).

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

Xie, ZQ, Park, JB, He, XN, Gao, Y, Zhou, YS & Lu, Y 2010, Resonant excitation of ethylene molecules in the combustion flame CVD of diamond using a wavelength tunable CO 2 laser in Laser-based Micro- and Nanopackaging and Assembly IV., 758509, Proceedings of SPIE - The International Society for Optical Engineering, vol. 7585, Laser-based Micro- and Nanopackaging and Assembly IV, San Francisco, CA, United States, 1/26/10. https://doi.org/10.1117/12.843904
Xie ZQ, Park JB, He XN, Gao Y, Zhou YS, Lu Y. Resonant excitation of ethylene molecules in the combustion flame CVD of diamond using a wavelength tunable CO 2 laser In Laser-based Micro- and Nanopackaging and Assembly IV. 2010. 758509. (Proceedings of SPIE - The International Society for Optical Engineering). https://doi.org/10.1117/12.843904
Xie, Z. Q. ; Park, J. B. ; He, X. N. ; Gao, Y. ; Zhou, Y. S. ; Lu, Yongfeng. / Resonant excitation of ethylene molecules in the combustion flame CVD of diamond using a wavelength tunable CO 2 laser Laser-based Micro- and Nanopackaging and Assembly IV. 2010. (Proceedings of SPIE - The International Society for Optical Engineering).
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abstract = "CO 2 laser resonant excitations of precursor molecules were applied in combustion flame synthesis of diamond films. The combustion flame was produced from a mixture of ethylene (C 2 H 4 ), acetylene (C 2 H 2 ) and oxygen (O 2 ). A wavelength-tunable CO 2 laser with wavelength range from 9.2 to 10.9 μm was used for wavelength-matched excitation of the ethylene molecules. By irradiating the flame using CO 2 laser at 10.532 μm, the ethylene molecules were resonantly excited through the CH 2 wagging vibrational mode (ν 7 , 949.3 cm -1 ). Irradiation of the flame using the common CO 2 laser wavelength at 10.591 μm was also carried out for comparison. It was found that diamond synthesis was more obviously enhanced by the CO 2 laser resonant excitation at 10.532 μm as compared to that at 10.591 μm. Firstly, the flame was shortened by 50{\%}, indicating a promoted reaction in the process. Secondly, the diamond grain sizes as well as the diamond film thicknesses were increased by 200~300{\%} and 160{\%} respectively, indicating a higher growth rate of diamond films. Finally, Raman spectra of the diamond sample showed a sharp diamond peak at 1334 cm -1 and a suppressed G-band, indicating higher diamond quality.",
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AU - Zhou, Y. S.

AU - Lu, Yongfeng

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N2 - CO 2 laser resonant excitations of precursor molecules were applied in combustion flame synthesis of diamond films. The combustion flame was produced from a mixture of ethylene (C 2 H 4 ), acetylene (C 2 H 2 ) and oxygen (O 2 ). A wavelength-tunable CO 2 laser with wavelength range from 9.2 to 10.9 μm was used for wavelength-matched excitation of the ethylene molecules. By irradiating the flame using CO 2 laser at 10.532 μm, the ethylene molecules were resonantly excited through the CH 2 wagging vibrational mode (ν 7 , 949.3 cm -1 ). Irradiation of the flame using the common CO 2 laser wavelength at 10.591 μm was also carried out for comparison. It was found that diamond synthesis was more obviously enhanced by the CO 2 laser resonant excitation at 10.532 μm as compared to that at 10.591 μm. Firstly, the flame was shortened by 50%, indicating a promoted reaction in the process. Secondly, the diamond grain sizes as well as the diamond film thicknesses were increased by 200~300% and 160% respectively, indicating a higher growth rate of diamond films. Finally, Raman spectra of the diamond sample showed a sharp diamond peak at 1334 cm -1 and a suppressed G-band, indicating higher diamond quality.

AB - CO 2 laser resonant excitations of precursor molecules were applied in combustion flame synthesis of diamond films. The combustion flame was produced from a mixture of ethylene (C 2 H 4 ), acetylene (C 2 H 2 ) and oxygen (O 2 ). A wavelength-tunable CO 2 laser with wavelength range from 9.2 to 10.9 μm was used for wavelength-matched excitation of the ethylene molecules. By irradiating the flame using CO 2 laser at 10.532 μm, the ethylene molecules were resonantly excited through the CH 2 wagging vibrational mode (ν 7 , 949.3 cm -1 ). Irradiation of the flame using the common CO 2 laser wavelength at 10.591 μm was also carried out for comparison. It was found that diamond synthesis was more obviously enhanced by the CO 2 laser resonant excitation at 10.532 μm as compared to that at 10.591 μm. Firstly, the flame was shortened by 50%, indicating a promoted reaction in the process. Secondly, the diamond grain sizes as well as the diamond film thicknesses were increased by 200~300% and 160% respectively, indicating a higher growth rate of diamond films. Finally, Raman spectra of the diamond sample showed a sharp diamond peak at 1334 cm -1 and a suppressed G-band, indicating higher diamond quality.

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