Temperature dependence of the absorption coefficient of water for midinfrared laser radiation

E. D. Jansen, T. G. Van Leeuwen, Massoud Motamedi, C. Borst, A. J. Welch

Research output: Contribution to journalArticle

151 Citations (Scopus)

Abstract

The dynamics of the water absorption peak around 1.94 μm was examined. This peak is important for the absorption of holmium and thulium laser radiation. To examine the effect of temperature on the absorption coefficient, the transmission of pulsed Ho:YAG, Ho:YSGG, and Tm:YAG laser radiation through water of 22°C, 49°C, and 70°C was measured as a function of the thickness of the water layer. From these data the absorption coefficients were determined at the three wavelengths. We found that at all three wavelengths, the absorption coefficients decreased when increasing the temperature. Second, the absorption spectrum of water was measured from 1,850-2,150 nm with a spectrophotometer. It was found that the absorption peak at 1.94 μm (at 22°C) shifts to shorter wavelengths with increasing temperatures, to 1.92 μm at 70°C. A model was developed to predict the temperature distribution incorporating the dynamic change in absorption coefficient. The temperature distributions are compared to the predictions of a model assuming constant optical properties. It is shown in this study that the dynamics of the absorption coefficient has a significant influence on the expected zone of damage and ablation parameters in the 2-μm wavelength range.

Original languageEnglish (US)
Pages (from-to)258-268
Number of pages11
JournalLasers in Surgery and Medicine
Volume14
Issue number3
StatePublished - 1994

Fingerprint

Lasers
Radiation
Temperature
Water
Solid-State Lasers
Thulium

Keywords

  • dynamic optical properties
  • holmium laser
  • temperature
  • thulium laser

ASJC Scopus subject areas

  • Surgery

Cite this

Temperature dependence of the absorption coefficient of water for midinfrared laser radiation. / Jansen, E. D.; Van Leeuwen, T. G.; Motamedi, Massoud; Borst, C.; Welch, A. J.

In: Lasers in Surgery and Medicine, Vol. 14, No. 3, 1994, p. 258-268.

Research output: Contribution to journalArticle

Jansen, E. D. ; Van Leeuwen, T. G. ; Motamedi, Massoud ; Borst, C. ; Welch, A. J. / Temperature dependence of the absorption coefficient of water for midinfrared laser radiation. In: Lasers in Surgery and Medicine. 1994 ; Vol. 14, No. 3. pp. 258-268.
@article{d6f4273bee5d4811ab297d685df58cf0,
title = "Temperature dependence of the absorption coefficient of water for midinfrared laser radiation",
abstract = "The dynamics of the water absorption peak around 1.94 μm was examined. This peak is important for the absorption of holmium and thulium laser radiation. To examine the effect of temperature on the absorption coefficient, the transmission of pulsed Ho:YAG, Ho:YSGG, and Tm:YAG laser radiation through water of 22°C, 49°C, and 70°C was measured as a function of the thickness of the water layer. From these data the absorption coefficients were determined at the three wavelengths. We found that at all three wavelengths, the absorption coefficients decreased when increasing the temperature. Second, the absorption spectrum of water was measured from 1,850-2,150 nm with a spectrophotometer. It was found that the absorption peak at 1.94 μm (at 22°C) shifts to shorter wavelengths with increasing temperatures, to 1.92 μm at 70°C. A model was developed to predict the temperature distribution incorporating the dynamic change in absorption coefficient. The temperature distributions are compared to the predictions of a model assuming constant optical properties. It is shown in this study that the dynamics of the absorption coefficient has a significant influence on the expected zone of damage and ablation parameters in the 2-μm wavelength range.",
keywords = "dynamic optical properties, holmium laser, temperature, thulium laser",
author = "Jansen, {E. D.} and {Van Leeuwen}, {T. G.} and Massoud Motamedi and C. Borst and Welch, {A. J.}",
year = "1994",
language = "English (US)",
volume = "14",
pages = "258--268",
journal = "Lasers in Surgery and Medicine",
issn = "0196-8092",
publisher = "Wiley-Liss Inc.",
number = "3",

}

TY - JOUR

T1 - Temperature dependence of the absorption coefficient of water for midinfrared laser radiation

AU - Jansen, E. D.

AU - Van Leeuwen, T. G.

AU - Motamedi, Massoud

AU - Borst, C.

AU - Welch, A. J.

PY - 1994

Y1 - 1994

N2 - The dynamics of the water absorption peak around 1.94 μm was examined. This peak is important for the absorption of holmium and thulium laser radiation. To examine the effect of temperature on the absorption coefficient, the transmission of pulsed Ho:YAG, Ho:YSGG, and Tm:YAG laser radiation through water of 22°C, 49°C, and 70°C was measured as a function of the thickness of the water layer. From these data the absorption coefficients were determined at the three wavelengths. We found that at all three wavelengths, the absorption coefficients decreased when increasing the temperature. Second, the absorption spectrum of water was measured from 1,850-2,150 nm with a spectrophotometer. It was found that the absorption peak at 1.94 μm (at 22°C) shifts to shorter wavelengths with increasing temperatures, to 1.92 μm at 70°C. A model was developed to predict the temperature distribution incorporating the dynamic change in absorption coefficient. The temperature distributions are compared to the predictions of a model assuming constant optical properties. It is shown in this study that the dynamics of the absorption coefficient has a significant influence on the expected zone of damage and ablation parameters in the 2-μm wavelength range.

AB - The dynamics of the water absorption peak around 1.94 μm was examined. This peak is important for the absorption of holmium and thulium laser radiation. To examine the effect of temperature on the absorption coefficient, the transmission of pulsed Ho:YAG, Ho:YSGG, and Tm:YAG laser radiation through water of 22°C, 49°C, and 70°C was measured as a function of the thickness of the water layer. From these data the absorption coefficients were determined at the three wavelengths. We found that at all three wavelengths, the absorption coefficients decreased when increasing the temperature. Second, the absorption spectrum of water was measured from 1,850-2,150 nm with a spectrophotometer. It was found that the absorption peak at 1.94 μm (at 22°C) shifts to shorter wavelengths with increasing temperatures, to 1.92 μm at 70°C. A model was developed to predict the temperature distribution incorporating the dynamic change in absorption coefficient. The temperature distributions are compared to the predictions of a model assuming constant optical properties. It is shown in this study that the dynamics of the absorption coefficient has a significant influence on the expected zone of damage and ablation parameters in the 2-μm wavelength range.

KW - dynamic optical properties

KW - holmium laser

KW - temperature

KW - thulium laser

UR - http://www.scopus.com/inward/record.url?scp=0028333680&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0028333680&partnerID=8YFLogxK

M3 - Article

VL - 14

SP - 258

EP - 268

JO - Lasers in Surgery and Medicine

JF - Lasers in Surgery and Medicine

SN - 0196-8092

IS - 3

ER -