Excitations of precursor molecules by different laser powers in laser-assisted growth of diamond films

Zhi Qiang Xie, Xiang Nan He, Wei Hu, Thomas Guillemet, Jong Bok Park, Yun Shen Zhou, Jaeil Bai, Yi Gao, Xiao Cheng Zeng, Lan Jiang, Yong Feng Lu

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Excitations of precursor molecules by different laser powers in laser-assisted growth of diamond films using a wavelength-tunable CO2 laser were studied. The wavelength of the CO2 laser was tuned to 10.532 μm to match a vibration mode of a precursor molecule, ethylene. The density of the incident laser power was adjusted to modify diamond crystal orientation, optimize diamond quality, and achieve high-efficiency laser energy coupling. It was observed that at incident laser power densities between 5.0 × 103 and 1.0 × 104 W/cm2, (100)-faceted diamond crystals were grown uniformly in the center areas of the diamond films. Higher incident laser powers, although further promoted growth rate, suppressed the uniformity of the diamond (100) facets. Best diamond quality was obtained within a laser power density range of 5.0 × 10 3 to 6.7 × 103 W/cm2, whereas the highest energy efficiency was achieved within a laser power density range of 3.3 × 103 to 6.7 × 103 W/cm2. The effects of the resonant laser energy coupling were investigated using optical emission spectroscopy.

Original languageEnglish (US)
Pages (from-to)4928-4933
Number of pages6
JournalCrystal Growth and Design
Volume10
Issue number11
DOIs
StatePublished - Nov 3 2010

Fingerprint

Diamond films
diamond films
Diamond
Molecules
Lasers
excitation
lasers
molecules
Diamonds
diamonds
radiant flux density
Wavelength
Optical emission spectroscopy
Laser tuning
optical emission spectroscopy
tunable lasers
wavelengths
Crystal orientation
crystals
Energy efficiency

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Excitations of precursor molecules by different laser powers in laser-assisted growth of diamond films. / Xie, Zhi Qiang; He, Xiang Nan; Hu, Wei; Guillemet, Thomas; Park, Jong Bok; Zhou, Yun Shen; Bai, Jaeil; Gao, Yi; Zeng, Xiao Cheng; Jiang, Lan; Lu, Yong Feng.

In: Crystal Growth and Design, Vol. 10, No. 11, 03.11.2010, p. 4928-4933.

Research output: Contribution to journalArticle

Xie, ZQ, He, XN, Hu, W, Guillemet, T, Park, JB, Zhou, YS, Bai, J, Gao, Y, Zeng, XC, Jiang, L & Lu, YF 2010, 'Excitations of precursor molecules by different laser powers in laser-assisted growth of diamond films', Crystal Growth and Design, vol. 10, no. 11, pp. 4928-4933. https://doi.org/10.1021/cg1010083
Xie, Zhi Qiang ; He, Xiang Nan ; Hu, Wei ; Guillemet, Thomas ; Park, Jong Bok ; Zhou, Yun Shen ; Bai, Jaeil ; Gao, Yi ; Zeng, Xiao Cheng ; Jiang, Lan ; Lu, Yong Feng. / Excitations of precursor molecules by different laser powers in laser-assisted growth of diamond films. In: Crystal Growth and Design. 2010 ; Vol. 10, No. 11. pp. 4928-4933.
@article{b145cd1f99f04ecf914dc814b729d35f,
title = "Excitations of precursor molecules by different laser powers in laser-assisted growth of diamond films",
abstract = "Excitations of precursor molecules by different laser powers in laser-assisted growth of diamond films using a wavelength-tunable CO2 laser were studied. The wavelength of the CO2 laser was tuned to 10.532 μm to match a vibration mode of a precursor molecule, ethylene. The density of the incident laser power was adjusted to modify diamond crystal orientation, optimize diamond quality, and achieve high-efficiency laser energy coupling. It was observed that at incident laser power densities between 5.0 × 103 and 1.0 × 104 W/cm2, (100)-faceted diamond crystals were grown uniformly in the center areas of the diamond films. Higher incident laser powers, although further promoted growth rate, suppressed the uniformity of the diamond (100) facets. Best diamond quality was obtained within a laser power density range of 5.0 × 10 3 to 6.7 × 103 W/cm2, whereas the highest energy efficiency was achieved within a laser power density range of 3.3 × 103 to 6.7 × 103 W/cm2. The effects of the resonant laser energy coupling were investigated using optical emission spectroscopy.",
author = "Xie, {Zhi Qiang} and He, {Xiang Nan} and Wei Hu and Thomas Guillemet and Park, {Jong Bok} and Zhou, {Yun Shen} and Jaeil Bai and Yi Gao and Zeng, {Xiao Cheng} and Lan Jiang and Lu, {Yong Feng}",
year = "2010",
month = "11",
day = "3",
doi = "10.1021/cg1010083",
language = "English (US)",
volume = "10",
pages = "4928--4933",
journal = "Crystal Growth and Design",
issn = "1528-7483",
publisher = "American Chemical Society",
number = "11",

}

TY - JOUR

T1 - Excitations of precursor molecules by different laser powers in laser-assisted growth of diamond films

AU - Xie, Zhi Qiang

AU - He, Xiang Nan

AU - Hu, Wei

AU - Guillemet, Thomas

AU - Park, Jong Bok

AU - Zhou, Yun Shen

AU - Bai, Jaeil

AU - Gao, Yi

AU - Zeng, Xiao Cheng

AU - Jiang, Lan

AU - Lu, Yong Feng

PY - 2010/11/3

Y1 - 2010/11/3

N2 - Excitations of precursor molecules by different laser powers in laser-assisted growth of diamond films using a wavelength-tunable CO2 laser were studied. The wavelength of the CO2 laser was tuned to 10.532 μm to match a vibration mode of a precursor molecule, ethylene. The density of the incident laser power was adjusted to modify diamond crystal orientation, optimize diamond quality, and achieve high-efficiency laser energy coupling. It was observed that at incident laser power densities between 5.0 × 103 and 1.0 × 104 W/cm2, (100)-faceted diamond crystals were grown uniformly in the center areas of the diamond films. Higher incident laser powers, although further promoted growth rate, suppressed the uniformity of the diamond (100) facets. Best diamond quality was obtained within a laser power density range of 5.0 × 10 3 to 6.7 × 103 W/cm2, whereas the highest energy efficiency was achieved within a laser power density range of 3.3 × 103 to 6.7 × 103 W/cm2. The effects of the resonant laser energy coupling were investigated using optical emission spectroscopy.

AB - Excitations of precursor molecules by different laser powers in laser-assisted growth of diamond films using a wavelength-tunable CO2 laser were studied. The wavelength of the CO2 laser was tuned to 10.532 μm to match a vibration mode of a precursor molecule, ethylene. The density of the incident laser power was adjusted to modify diamond crystal orientation, optimize diamond quality, and achieve high-efficiency laser energy coupling. It was observed that at incident laser power densities between 5.0 × 103 and 1.0 × 104 W/cm2, (100)-faceted diamond crystals were grown uniformly in the center areas of the diamond films. Higher incident laser powers, although further promoted growth rate, suppressed the uniformity of the diamond (100) facets. Best diamond quality was obtained within a laser power density range of 5.0 × 10 3 to 6.7 × 103 W/cm2, whereas the highest energy efficiency was achieved within a laser power density range of 3.3 × 103 to 6.7 × 103 W/cm2. The effects of the resonant laser energy coupling were investigated using optical emission spectroscopy.

UR - http://www.scopus.com/inward/record.url?scp=78149353417&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=78149353417&partnerID=8YFLogxK

U2 - 10.1021/cg1010083

DO - 10.1021/cg1010083

M3 - Article

AN - SCOPUS:78149353417

VL - 10

SP - 4928

EP - 4933

JO - Crystal Growth and Design

JF - Crystal Growth and Design

SN - 1528-7483

IS - 11

ER -