ThuliumV1, Pascal, Corpus, bibRecord, 000F50

Beam-profile modulation of thulium laser radiation applied with multimode fibers and its effect on the threshold fluence to vaporize water

Identifieur interne : 000F50 ( Pascal/Corpus ); précédent : 000F49; suivant : 000F51

Beam-profile modulation of thulium laser radiation applied with multimode fibers and its effect on the threshold fluence to vaporize water

Auteurs : Ralf Brinkmann ; Christoph Hansen

Source :

Applied optics [ 0003-6935 ] ; 2000-07-01.

RBID : Pascal:00-0376515

Descripteurs français

Pascal (Inist)
- 4260J, 4265R, Etude expérimentale, Méthode mesure, Faisceau laser, Modulation optique, Spectre IR, Effet photothermique, Evaporation, Eau.

English descriptors

KwdEn :
- Evaporation, Experimental study, Infrared spectra, Laser beams, Measuring methods, Optical modulation, Photothermal effects, Water, optical pulse shaping.

Abstract

The threshold fluences at which vaporization is initiated at the tip of a multimode fiber that is submerged in water were investigated when free-running and Q-switched thulium laser pulses (λ=2.01 μm) were applied with different pulse energies. We focused on the quantification of temporal and spatial fluence modulations of the beam profile at the tip of a 400-μm fiber. The spatial and the temporal fluence peaks over the average fluence were measured to as high as 1.5 and 4 in the Q-switched mode, respectively, and 2.5 and 40 in the free-running mode, respectively. The fluence peaks significantly influence the vaporization process. An increase in the threshold fluence with increasing pulse energy was found for the Q-switched mode, but there was a decrease for the free-running mode. Pressure transients of the order of 1 kbar and temperatures higher than 200°C were calculated for a 30-mJ Q-switched laser pulse at the onset of vaporization. Collecting all the data allowed us to trace the thermodynamic path of rapid heating and vaporization in a phase diagram of water. © 2000 Optical Society of America

Notice en format standard (ISO 2709)

Pour connaître la documentation sur le format Inist Standard.

A01	`01`	`1`		`@0 0003-6935`
A02	`01`			`@0 APOPAI`
A03		`1`		`@0 Appl. opt.`
A05				`@2 39`
A06				`@2 19`
A08	`01`	`1`	`ENG`	`@1 Beam-profile modulation of thulium laser radiation applied with multimode fibers and its effect on the threshold fluence to vaporize water`
A11	`01`	`1`		`@1 BRINKMANN (Ralf)`
A11	`02`	`1`		`@1 HANSEN (Christoph)`
A14	`01`			`@1 Medical Laser Center Lubeck GmbH, Peter-Monnik-Weg 4, D-23562 Lubeck, Germany @Z 1 aut. @Z 2 aut.`
A20				`@1 3361-3371`
A21				`@1 2000-07-01`
A23	`01`			`@0 ENG`
A43	`01`			`@1 INIST @2 6309`
A44				`@0 8100 @1 © 2000 American Institute of Physics. All rights reserved.`
A47	`01`	`1`		`@0 00-0376515`
A60				`@1 P`
A61				`@0 A`
A64	`01`	`1`		`@0 Applied optics`
A66	`01`			`@0 USA`
C01	`01`		`ENG`	@0 The threshold fluences at which vaporization is initiated at the tip of a multimode fiber that is submerged in water were investigated when free-running and Q-switched thulium laser pulses (λ=2.01 μm) were applied with different pulse energies. We focused on the quantification of temporal and spatial fluence modulations of the beam profile at the tip of a 400-μm fiber. The spatial and the temporal fluence peaks over the average fluence were measured to as high as 1.5 and 4 in the Q-switched mode, respectively, and 2.5 and 40 in the free-running mode, respectively. The fluence peaks significantly influence the vaporization process. An increase in the threshold fluence with increasing pulse energy was found for the Q-switched mode, but there was a decrease for the free-running mode. Pressure transients of the order of 1 kbar and temperatures higher than 200<hair thin space>°C were calculated for a 30-mJ Q-switched laser pulse at the onset of vaporization. Collecting all the data allowed us to trace the thermodynamic path of rapid heating and vaporization in a phase diagram of water. © 2000 Optical Society of America
C02	`01`	`3`		`@0 001B40B60J`
C02	`02`	`3`		`@0 001B40B65R`
C03	`01`	`3`	`FRE`	`@0 4260J @2 PAC @4 INC`
C03	`02`	`3`	`FRE`	`@0 4265R @2 PAC @4 INC`
C03	`03`	`3`	`FRE`	`@0 Etude expérimentale`
C03	`03`	`3`	`ENG`	`@0 Experimental study`
C03	`04`	`3`	`FRE`	`@0 Méthode mesure`
C03	`04`	`3`	`ENG`	`@0 Measuring methods`
C03	`05`	`3`	`FRE`	`@0 Faisceau laser`
C03	`05`	`3`	`ENG`	`@0 Laser beams`
C03	`06`	`3`	`FRE`	`@0 Modulation optique`
C03	`06`	`3`	`ENG`	`@0 Optical modulation`
C03	`07`	`3`	`ENG`	`@0 optical pulse shaping @4 INC`
C03	`08`	`3`	`FRE`	`@0 Spectre IR`
C03	`08`	`3`	`ENG`	`@0 Infrared spectra`
C03	`09`	`3`	`FRE`	`@0 Effet photothermique`
C03	`09`	`3`	`ENG`	`@0 Photothermal effects`
C03	`10`	`3`	`FRE`	`@0 Evaporation`
C03	`10`	`3`	`ENG`	`@0 Evaporation`
C03	`11`	`3`	`FRE`	`@0 Eau`
C03	`11`	`3`	`ENG`	`@0 Water`
N21				`@1 255`
N47	`01`	`1`		`@0 0036M000095`

Format Inist (serveur)

NO :	PASCAL 00-0376515 AIP
ET :	Beam-profile modulation of thulium laser radiation applied with multimode fibers and its effect on the threshold fluence to vaporize water
AU :	BRINKMANN (Ralf); HANSEN (Christoph)
AF :	Medical Laser Center Lubeck GmbH, Peter-Monnik-Weg 4, D-23562 Lubeck, Germany (1 aut., 2 aut.)
DT :	Publication en série; Niveau analytique
SO :	Applied optics; ISSN 0003-6935; Coden APOPAI; Etats-Unis; Da. 2000-07-01; Vol. 39; No. 19; Pp. 3361-3371
LA :	Anglais
EA :	The threshold fluences at which vaporization is initiated at the tip of a multimode fiber that is submerged in water were investigated when free-running and Q-switched thulium laser pulses (λ=2.01 μm) were applied with different pulse energies. We focused on the quantification of temporal and spatial fluence modulations of the beam profile at the tip of a 400-μm fiber. The spatial and the temporal fluence peaks over the average fluence were measured to as high as 1.5 and 4 in the Q-switched mode, respectively, and 2.5 and 40 in the free-running mode, respectively. The fluence peaks significantly influence the vaporization process. An increase in the threshold fluence with increasing pulse energy was found for the Q-switched mode, but there was a decrease for the free-running mode. Pressure transients of the order of 1 kbar and temperatures higher than 200<hair thin space>°C were calculated for a 30-mJ Q-switched laser pulse at the onset of vaporization. Collecting all the data allowed us to trace the thermodynamic path of rapid heating and vaporization in a phase diagram of water. © 2000 Optical Society of America
CC :	001B40B60J; 001B40B65R
FD :	4260J; 4265R; Etude expérimentale; Méthode mesure; Faisceau laser; Modulation optique; Spectre IR; Effet photothermique; Evaporation; Eau
ED :	Experimental study; Measuring methods; Laser beams; Optical modulation; optical pulse shaping; Infrared spectra; Photothermal effects; Evaporation; Water
LO :	INIST-6309
ID :	00-0376515

Links to Exploration step

Pascal:00-0376515

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<front><div type="abstract" xml:lang="en">The threshold fluences at which vaporization is initiated at the tip of a multimode fiber that is submerged in water were investigated when free-running and Q-switched thulium laser pulses (λ=2.01 μm) were applied with different pulse energies. We focused on the quantification of temporal and spatial fluence modulations of the beam profile at the tip of a 400-μm fiber. The spatial and the temporal fluence peaks over the average fluence were measured to as high as 1.5 and 4 in the Q-switched mode, respectively, and 2.5 and 40 in the free-running mode, respectively. The fluence peaks significantly influence the vaporization process. An increase in the threshold fluence with increasing pulse energy was found for the Q-switched mode, but there was a decrease for the free-running mode. Pressure transients of the order of 1 kbar and temperatures higher than 200°C were calculated for a 30-mJ Q-switched laser pulse at the onset of vaporization. Collecting all the data allowed us to trace the thermodynamic path of rapid heating and vaporization in a phase diagram of water. © 2000 Optical Society of America</div>
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<ET>Beam-profile modulation of thulium laser radiation applied with multimode fibers and its effect on the threshold fluence to vaporize water</ET>
<AU>BRINKMANN (Ralf); HANSEN (Christoph)</AU>
<AF>Medical Laser Center Lubeck GmbH, Peter-Monnik-Weg 4, D-23562 Lubeck, Germany (1 aut., 2 aut.)</AF>
<DT>Publication en série; Niveau analytique</DT>
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<LA>Anglais</LA>
<EA>The threshold fluences at which vaporization is initiated at the tip of a multimode fiber that is submerged in water were investigated when free-running and Q-switched thulium laser pulses (λ=2.01 μm) were applied with different pulse energies. We focused on the quantification of temporal and spatial fluence modulations of the beam profile at the tip of a 400-μm fiber. The spatial and the temporal fluence peaks over the average fluence were measured to as high as 1.5 and 4 in the Q-switched mode, respectively, and 2.5 and 40 in the free-running mode, respectively. The fluence peaks significantly influence the vaporization process. An increase in the threshold fluence with increasing pulse energy was found for the Q-switched mode, but there was a decrease for the free-running mode. Pressure transients of the order of 1 kbar and temperatures higher than 200°C were calculated for a 30-mJ Q-switched laser pulse at the onset of vaporization. Collecting all the data allowed us to trace the thermodynamic path of rapid heating and vaporization in a phase diagram of water. © 2000 Optical Society of America</EA>
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Beam-profile modulation of thulium laser radiation applied with multimode fibers and its effect on the threshold fluence to vaporize water

Beam-profile modulation of thulium laser radiation applied with multimode fibers and its effect on the threshold fluence to vaporize water

Source :

Descripteurs français

English descriptors

Abstract

Notice en format standard (ISO 2709)

Format Inist (serveur)

Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri