Oxygen isotope ratio analysis of silicate and oxide minerals by UV ablation with a frequency-doubled copper vapour laser

E. D. Young; A. J. Andrews; D. W. Coutts

doi:10.1109/CLEOE.1996.562326

Oxygen isotope ratio analysis of silicate and oxide minerals by UV ablation with a frequency-doubled copper vapour laser

E. D. Young^*, A. J. Andrews, D. W. Coutts

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding contribution › peer-review

1 Citation (Scopus)

Abstract

Frequency doubling of a copper vapour laser produces high-repetition rate UV output suitable for mineral ablation and fluorination. An Oxford Lasers copper vapour laser (LS 10-10, nominally 10W average power) operating at 4 kHz pulse repetition rate was used in the experiments. The laser was configured with a high magnification off-axis unstable resonator (M = 64) and frequency doubled in BBO using a line focus as described to yield average powers in the UV of up to 400 mW. The UV is focused to a 25 micron spot on the mineral sample via a turning prism placed within the blind spot of a binocular microscope, enabling coaxial viewing of ablation through the BaF ₂ window of the sample chamber. Silicate threshold fluences of 5 to 15 J/cm ² are easily obtained with this system. The high repetition rate of the copper vapour UV source permits ablation times on the order of 1 to 2 seconds, yielding background levels of O ₂ on the order of 0.4 × 10 ^-9 moles. During ablation the beam is restored to produce an ablation pit measuring approximately 100 × 100 × 30 microns and approximately 15 × 10 ^-9 moles of O ₂. Movement of the laser beam enhances the size of the plasma plume and promotes fluorination. Potential applications of this new UV-laser based technology range from meteoritics to biogeochemistry.

Original language	English
Title of host publication	Proceedings of European Meeting on Lasers and Electro-Optics
Place of Publication	Piscataway, N.J.
Publisher	Institute of Electrical and Electronics Engineers (IEEE)
Pages	199
Number of pages	1
ISBN (Electronic)	0780331702
ISBN (Print)	0780331699
DOIs	https://doi.org/10.1109/CLEOE.1996.562326
Publication status	Published - Sep 1996
Externally published	Yes
Event	Proceedings of the 1996 Conference on Lasers and Electro-Optics Europe, CLEO/Europe - Hamburg, Ger Duration: 8 Sep 1996 → 13 Sep 1996

Other

Other	Proceedings of the 1996 Conference on Lasers and Electro-Optics Europe, CLEO/Europe
City	Hamburg, Ger
Period	8/09/96 → 13/09/96

Access to Document

10.1109/CLEOE.1996.562326

Cite this

@inproceedings{5092dd821bb742f6b70a621714ba02ab,

title = "Oxygen isotope ratio analysis of silicate and oxide minerals by UV ablation with a frequency-doubled copper vapour laser",

abstract = "Frequency doubling of a copper vapour laser produces high-repetition rate UV output suitable for mineral ablation and fluorination. An Oxford Lasers copper vapour laser (LS 10-10, nominally 10W average power) operating at 4 kHz pulse repetition rate was used in the experiments. The laser was configured with a high magnification off-axis unstable resonator (M = 64) and frequency doubled in BBO using a line focus as described to yield average powers in the UV of up to 400 mW. The UV is focused to a 25 micron spot on the mineral sample via a turning prism placed within the blind spot of a binocular microscope, enabling coaxial viewing of ablation through the BaF 2 window of the sample chamber. Silicate threshold fluences of 5 to 15 J/cm 2 are easily obtained with this system. The high repetition rate of the copper vapour UV source permits ablation times on the order of 1 to 2 seconds, yielding background levels of O 2 on the order of 0.4 × 10 -9 moles. During ablation the beam is restored to produce an ablation pit measuring approximately 100 × 100 × 30 microns and approximately 15 × 10 -9 moles of O 2. Movement of the laser beam enhances the size of the plasma plume and promotes fluorination. Potential applications of this new UV-laser based technology range from meteoritics to biogeochemistry.",

author = "Young, {E. D.} and Andrews, {A. J.} and Coutts, {D. W.}",

year = "1996",

month = sep,

doi = "10.1109/CLEOE.1996.562326",

language = "English",

isbn = "0780331699",

pages = "199",

booktitle = "Proceedings of European Meeting on Lasers and Electro-Optics",

publisher = "Institute of Electrical and Electronics Engineers (IEEE)",

address = "United States",

note = "Proceedings of the 1996 Conference on Lasers and Electro-Optics Europe, CLEO/Europe ; Conference date: 08-09-1996 Through 13-09-1996",

}

Young, ED, Andrews, AJ & Coutts, DW 1996, Oxygen isotope ratio analysis of silicate and oxide minerals by UV ablation with a frequency-doubled copper vapour laser. in Proceedings of European Meeting on Lasers and Electro-Optics., 562326, Institute of Electrical and Electronics Engineers (IEEE), Piscataway, N.J., pp. 199, Proceedings of the 1996 Conference on Lasers and Electro-Optics Europe, CLEO/Europe, Hamburg, Ger, 8/09/96. https://doi.org/10.1109/CLEOE.1996.562326

Oxygen isotope ratio analysis of silicate and oxide minerals by UV ablation with a frequency-doubled copper vapour laser. / Young, E. D.; Andrews, A. J.; Coutts, D. W.

Proceedings of European Meeting on Lasers and Electro-Optics. Piscataway, N.J. : Institute of Electrical and Electronics Engineers (IEEE), 1996. p. 199 562326.

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding contribution › peer-review

TY - GEN

T1 - Oxygen isotope ratio analysis of silicate and oxide minerals by UV ablation with a frequency-doubled copper vapour laser

AU - Young, E. D.

AU - Andrews, A. J.

AU - Coutts, D. W.

PY - 1996/9

Y1 - 1996/9

N2 - Frequency doubling of a copper vapour laser produces high-repetition rate UV output suitable for mineral ablation and fluorination. An Oxford Lasers copper vapour laser (LS 10-10, nominally 10W average power) operating at 4 kHz pulse repetition rate was used in the experiments. The laser was configured with a high magnification off-axis unstable resonator (M = 64) and frequency doubled in BBO using a line focus as described to yield average powers in the UV of up to 400 mW. The UV is focused to a 25 micron spot on the mineral sample via a turning prism placed within the blind spot of a binocular microscope, enabling coaxial viewing of ablation through the BaF 2 window of the sample chamber. Silicate threshold fluences of 5 to 15 J/cm 2 are easily obtained with this system. The high repetition rate of the copper vapour UV source permits ablation times on the order of 1 to 2 seconds, yielding background levels of O 2 on the order of 0.4 × 10 -9 moles. During ablation the beam is restored to produce an ablation pit measuring approximately 100 × 100 × 30 microns and approximately 15 × 10 -9 moles of O 2. Movement of the laser beam enhances the size of the plasma plume and promotes fluorination. Potential applications of this new UV-laser based technology range from meteoritics to biogeochemistry.

AB - Frequency doubling of a copper vapour laser produces high-repetition rate UV output suitable for mineral ablation and fluorination. An Oxford Lasers copper vapour laser (LS 10-10, nominally 10W average power) operating at 4 kHz pulse repetition rate was used in the experiments. The laser was configured with a high magnification off-axis unstable resonator (M = 64) and frequency doubled in BBO using a line focus as described to yield average powers in the UV of up to 400 mW. The UV is focused to a 25 micron spot on the mineral sample via a turning prism placed within the blind spot of a binocular microscope, enabling coaxial viewing of ablation through the BaF 2 window of the sample chamber. Silicate threshold fluences of 5 to 15 J/cm 2 are easily obtained with this system. The high repetition rate of the copper vapour UV source permits ablation times on the order of 1 to 2 seconds, yielding background levels of O 2 on the order of 0.4 × 10 -9 moles. During ablation the beam is restored to produce an ablation pit measuring approximately 100 × 100 × 30 microns and approximately 15 × 10 -9 moles of O 2. Movement of the laser beam enhances the size of the plasma plume and promotes fluorination. Potential applications of this new UV-laser based technology range from meteoritics to biogeochemistry.

UR - http://www.scopus.com/inward/record.url?scp=0029765287&partnerID=8YFLogxK

U2 - 10.1109/CLEOE.1996.562326

DO - 10.1109/CLEOE.1996.562326

M3 - Conference proceeding contribution

AN - SCOPUS:0029765287

SN - 0780331699

SP - 199

BT - Proceedings of European Meeting on Lasers and Electro-Optics

PB - Institute of Electrical and Electronics Engineers (IEEE)

CY - Piscataway, N.J.

T2 - Proceedings of the 1996 Conference on Lasers and Electro-Optics Europe, CLEO/Europe

Y2 - 8 September 1996 through 13 September 1996

ER -

Oxygen isotope ratio analysis of silicate and oxide minerals by UV ablation with a frequency-doubled copper vapour laser

Abstract

Other

Access to Document

Other files and links

Fingerprint

Cite this