High-intensity CO2 laser-aerosol interactions.

H. S. Kwok; T. M. Rossi; W. S. Lau; D. T. Shaw

High-intensity CO₂ laser-aerosol interactions.

H. S. Kwok
, T. M. Rossi
, W. S. Lau
, D. T. Shaw

Department of Electrical Engineering

SUNY Buffalo

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

Abstract

The interaction of a high-power CO₂ laser with a single water droplet of controllable size has been investigated. A very interesting enhancement of the transmission was observed before the onset of plasma formation. In addition, a temporal modulation of the laser pulse was also detected without measurable spatial deformation. The experiment was performed with a single-longitudinal-mode (SLM) CO₂ laser. The aerosol particles were produced by a commercial generator. The energy transmittance of the laser as a function of intensity for 53-μm particles is shown and discussed. The observed reduction of the breakdown threshold from the clean air value of 6 GW/cm² is rather small compared to other results. The difference is attributed to the controlled atmosphere and the use of an SLM laser. An increase in transmission between I_E and I_BD is attributed to explosion and disintegration of the aerosol droplet. The dynamic temporal behavior of the transmitted laser radiation shows breaking up of the laser pulse itself.

Original language	English
Title of host publication	CLEO 88 Conf Lasers Electro Opt 1988 Tech Dig Ser Vol 7
Publisher	Publ by IEEE
Pages	342, 343
ISBN (Print)	155752033X
State	Published - 1988

Publication series

Name	CLEO 88 Conf Lasers Electro Opt 1988 Tech Dig Ser Vol 7

Cite this

@inproceedings{c4873651f7ca4e4d9f71060b3b56c6dc,

title = "High-intensity CO2 laser-aerosol interactions.",

abstract = "The interaction of a high-power CO2 laser with a single water droplet of controllable size has been investigated. A very interesting enhancement of the transmission was observed before the onset of plasma formation. In addition, a temporal modulation of the laser pulse was also detected without measurable spatial deformation. The experiment was performed with a single-longitudinal-mode (SLM) CO2 laser. The aerosol particles were produced by a commercial generator. The energy transmittance of the laser as a function of intensity for 53-μm particles is shown and discussed. The observed reduction of the breakdown threshold from the clean air value of 6 GW/cm2 is rather small compared to other results. The difference is attributed to the controlled atmosphere and the use of an SLM laser. An increase in transmission between IE and IBD is attributed to explosion and disintegration of the aerosol droplet. The dynamic temporal behavior of the transmitted laser radiation shows breaking up of the laser pulse itself.",

author = "Kwok, \{H. S.\} and Rossi, \{T. M.\} and Lau, \{W. S.\} and Shaw, \{D. T.\}",

year = "1988",

language = "English",

isbn = "155752033X",

series = "CLEO 88 Conf Lasers Electro Opt 1988 Tech Dig Ser Vol 7",

publisher = "Publ by IEEE",

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booktitle = "CLEO 88 Conf Lasers Electro Opt 1988 Tech Dig Ser Vol 7",

}

TY - GEN

T1 - High-intensity CO2 laser-aerosol interactions.

AU - Kwok, H. S.

AU - Rossi, T. M.

AU - Lau, W. S.

AU - Shaw, D. T.

PY - 1988

Y1 - 1988

N2 - The interaction of a high-power CO2 laser with a single water droplet of controllable size has been investigated. A very interesting enhancement of the transmission was observed before the onset of plasma formation. In addition, a temporal modulation of the laser pulse was also detected without measurable spatial deformation. The experiment was performed with a single-longitudinal-mode (SLM) CO2 laser. The aerosol particles were produced by a commercial generator. The energy transmittance of the laser as a function of intensity for 53-μm particles is shown and discussed. The observed reduction of the breakdown threshold from the clean air value of 6 GW/cm2 is rather small compared to other results. The difference is attributed to the controlled atmosphere and the use of an SLM laser. An increase in transmission between IE and IBD is attributed to explosion and disintegration of the aerosol droplet. The dynamic temporal behavior of the transmitted laser radiation shows breaking up of the laser pulse itself.

AB - The interaction of a high-power CO2 laser with a single water droplet of controllable size has been investigated. A very interesting enhancement of the transmission was observed before the onset of plasma formation. In addition, a temporal modulation of the laser pulse was also detected without measurable spatial deformation. The experiment was performed with a single-longitudinal-mode (SLM) CO2 laser. The aerosol particles were produced by a commercial generator. The energy transmittance of the laser as a function of intensity for 53-μm particles is shown and discussed. The observed reduction of the breakdown threshold from the clean air value of 6 GW/cm2 is rather small compared to other results. The difference is attributed to the controlled atmosphere and the use of an SLM laser. An increase in transmission between IE and IBD is attributed to explosion and disintegration of the aerosol droplet. The dynamic temporal behavior of the transmitted laser radiation shows breaking up of the laser pulse itself.

UR - https://www.scopus.com/pages/publications/0024129566

M3 - Conference contribution

AN - SCOPUS:0024129566

SN - 155752033X

T3 - CLEO 88 Conf Lasers Electro Opt 1988 Tech Dig Ser Vol 7

SP - 342, 343

BT - CLEO 88 Conf Lasers Electro Opt 1988 Tech Dig Ser Vol 7

PB - Publ by IEEE

ER -

High-intensity CO₂ laser-aerosol interactions.

Abstract

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