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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 49, Iss. 9 — Mar. 20, 2010
  • pp: 1555–1562

Spectroscopic determination of rotational temperature in C 2 H 4 / C 2 H 2 / O 2 flames for diamond growth with and without tunable CO 2 laser excitation

X. N. He, X. K. Shen, T. Gebre, Z. Q. Xie, L. Jiang, and Y. F. Lu  »View Author Affiliations


Applied Optics, Vol. 49, Issue 9, pp. 1555-1562 (2010)
http://dx.doi.org/10.1364/AO.49.001555


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Abstract

Optical emission spectroscopy (OES) and spectroscopic temperature determination were carried out to study C 2 H 4 / C 2 H 2 / O 2 flames used for diamond deposition with and without an excitation by a wavelength-tunable CO 2 laser. Strong emissions from C 2 and CH radicals were observed in the visible range in all the acquired OES spectra. When the flames were irradiated by using a continuous-wave (CW) CO 2 laser at a wavelength of 10.591 μm , the emission intensities of the C 2 and CH radicals in the flames increased owing to the laser excitation. The CO 2 laser was also tuned to a wavelength of 10.532 μm to precisely match the resonant frequency of the CH 2 -wagging vibrational mode of the C 2 H 4 molecules. OES spectroscopy of the C 2 and CH radicals were performed at different laser powers. The rotational temperatures of CH radicals in the flames were determined by analyzing the spectra of the R branch of the A 2 Δ X 2 Π ( 0 , 0 ) electronic transition near 430 nm . The deposited diamond thin-films were characterized by scanning electron microscopy, stylus profilometry, and Raman spectroscopy. The deposition mechanism with and without the CO 2 laser excitation was discussed based on the OES spectral results.

© 2010 Optical Society of America

OCIS Codes
(120.1740) Instrumentation, measurement, and metrology : Combustion diagnostics
(300.2140) Spectroscopy : Emission
(300.6390) Spectroscopy : Spectroscopy, molecular

ToC Category:
Spectroscopy

History
Original Manuscript: January 4, 2010
Revised Manuscript: February 22, 2010
Manuscript Accepted: February 22, 2010
Published: March 11, 2010

Citation
X. N. He, X. K. Shen, T. Gebre, Z. Q. Xie, L. Jiang, and Y. F. Lu, "Spectroscopic determination of rotational temperature in C2H4/C2H2/O2 flames for diamond growth with and without tunable CO2 laser excitation," Appl. Opt. 49, 1555-1562 (2010)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-49-9-1555


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References

  1. W. A. Yarbrough and R. Messier, “Current issues and problems in the chemical vapor deposition of diamond,” Science 247, 688-696 (1990). [CrossRef]
  2. J. C. Angus and C. C. Hayman, “Low-pressure, metastable growth of diamond and 'diamondlike' phases,” Science 241, 913-921 (1988). [CrossRef]
  3. D. Das and R. N. Singh, “A review of nucleation, growth and low temperature synthesis of diamond thin films,” Int. Mater. Rev. 52(1), 29-64 (2007). [CrossRef]
  4. Y. Hirose, 1st International Conference on the New Diamond Science and Technology, R. Roy, R. Messier, J. E. Butler, and J. T. Glass, eds. (Materials Research Society, 1988), p 38.
  5. Y. Hirose, S. Amanuma, and K. Komaki, “The synthesis of high-quality diamond in combustion flames,” J. Appl. Phys. 68, 6401-6405 (1990). [CrossRef]
  6. K. Tanabe, Y. Nishibayashi, T. Imai., A. Ikegaya, and N. Fujimori, “Deposition of diamond film from the O2--CH4 system,” in Science and Technology of New Diamond, S. Saito, O. Fukunaga, and M. Yoshikawa, eds. (KTK Scientific Publishers/Terra Scientific Publishing Company, 1990), pp. 71-77.
  7. J. S. Kim and M. A. Cappelli, “Temperature measurements in low-pressure, diamond-forming, premixed flames,” J. Appl. Phys. 84, 4595-4602 (1998). [CrossRef]
  8. M. D. Welter and K. L. Menningen, “Radical density measurements in an oxyacetylene torch diamond growth flame,” J. Appl. Phys. 82, 1900-1904 (1997). [CrossRef]
  9. S. J. Firchow and K. L. Menningen, “Radical density measurements in an atmospheric pressure oxyacetylene torch,” J. Phys. D 32, 937-941 (1999).
  10. S. Roy, J. DuBois, R. P. Lucht, and N. G. Glumac, “Hydroxyl radical concentration measurements near the deposition substrate in low-pressure diamond-forming flames,” Combust. Flame 138, 285-294 (2004). [CrossRef]
  11. A. G. Gaydon, The Spectroscopy of Flames (Chapman & Hall, 1957).
  12. S. Pellerin, J. Koulidiati, O. Motret, K. Musiol, M. de Graaf, B. Pokrzwka, and J. Chapelle, “Temperature determination using molecular spectra simulation,” High Temp. Mater. Processes 1, 493-509 (1997).
  13. C. de Izarra, “UV OH spectrum used as a molecular pyrometer,” J. Phys. D 33, 1697-1704 (2000).
  14. S. Pellerin, K. Musiol, O. Motret, B. Pokrzywka, and J. Chapelle, “Application of (0,0) Swan band spectrum of C2 for temperature measurement,” J. Phys. D 29, 2850-2865(1996).
  15. J. S. Kim and M. A. Cappelli, “Diamond film growth in low pressure premixed ethylene-oxygen flames,” Appl. Phys. Lett. 65, 2786 (1994). [CrossRef]
  16. J. Asmussen and D. Reinhard, Diamond Film Handbook (Marcel Dekker, Inc., New York, 2002), pp. 303-304.
  17. S. Y. Moon and W. Choe, “A comparative study of rotational temperatures using diatomic OH, O2, and N2+ molecular spectra emitted from atmospheric plasmas,” Spectrochim. Acta Part B 58, 249-257 (2003).
  18. G. Herzberg, Molecular Spectra and Molecular Structure (Litton Educational, 1950), pp. 465-472.
  19. I. Kovacs, Rotational Structure in the Spectra of Diatomic Molecules (American Elsevier, 1969), pp. 115-135.
  20. J. H. Walker, R. D. Saunders, and A. T. Hattenburg, “Spectral radiance calibrations,” NBS Special Publication 250-1(National Bureau of Standards, 1987).
  21. F. Tuinstra and J. L. Koenig, “Raman spectrum of graphite,” J. Chem. Phys. 53, 1126-1130 (1970). [CrossRef]
  22. R. J. Nemanich, J. T. Glass, G. Lucovsky, and R. E. Shroder, “Raman scattering characterization of carbon bonding in diamond and diamondlike thin films,” J. Vac. Sci. Technol. A 6, 1783 (1988). [CrossRef]
  23. R. E. Shroder, R. J. Nemanich, and J. T. Glass, “Analysis of the composite structures in diamond thin films by Raman spectroscopy,” Phys. Rev. B 41, 3738-3745 (1990).

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