Vacuum-cored hollow waveguide for transmission of high-energy, nanosecond Nd:YAG laser pulses and its application to biological tissue ablation

被引：34

作者：

Sato, S

Ashida, H

Arai, T

Shi, YW

Matsuura, Y

Miyagi, M

机构：

[1] Natl Def Med Coll, Res Inst, Div Biomed Informat Sci, Tokorozawa, Saitama 3598513, Japan

[2] Natl Def Med Coll, Dept Med Engn, Tokorozawa, Saitama 3598513, Japan

[3] Tohoku Univ, Grad Sch Engn, Sendai, Miyagi 9808579, Japan

来源：

OPTICS LETTERS | 2000年 / 25卷 / 01期

关键词：

D O I：

10.1364/OL.25.000049

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A vacuum-cored hollow waveguide has been found to transmit 1064-nm, Q-switched Nd:YAG laser pulses. With this scheme, laser-induced air breakdown was completely suppressed, and the laser-induced damage threshold of the waveguide's inner coating was significantly increased. With a l-m-long, l-mm inner-diameter, cyclic olefin polymer-coated silver hollow waveguide, the maximum transmitted laser energy was as great as 158 mJ/pulse (20.1 J/cm(2)), at a repetition rate of 10 Hz in a 90 degrees-bent waveguide condition. The corresponding transmitted peak laser power was 17.6 MW. With the transmitted laser pulses, deep ablation of myocardium tissues was demonstrated in vitro. (C) 2000 Optical Society of America.

引用

页码：49 / 51

页数：3

共 7 条

[1]

Ediger, 1993, ELECTROOPTICS HDB

[2] High-power Nd:YAG laser picosecond pulse delivery by a polymer-coated silver hollow-glass waveguide [J].

Jelínková, H ;

Sulc, J ;

Cerny, P ;

Shi, YW ;

Matsuura, Y ;

Miyagi, M .

OPTICS LETTERS, 1999, 24 (14) :957-959

[3] Hollow-fiber delivery of high-power pulsed Nd:YAG laser light [J].

Matsuura, Y ;

Hanamoto, K ;

Sato, S ;

Miyagi, M .

OPTICS LETTERS, 1998, 23 (23) :1858-1860

[4] Delivery of 10-MW Nd:YAG laser pulses by large-core optical fibers: Dependence of the laser-intensity profile on beam propagation [J].

Richou, B ;

Schertz, I ;

Gobin, I ;

Richou, J .

APPLIED OPTICS, 1997, 36 (07) :1610-1614

[5] Hollow-waveguide-based transmission of Q-switched Nd:YAG laser beam for biological tissue ablation [J].

Sato, S ;

Ashida, H ;

Shi, YW ;

Matsuura, Y ;

Miyagi, M .

SPECIALTY FIBER OPTICS FOR MEDICAL APPLICATIONS, PROCEEDINGS OF, 1999, 3596 :50-54

[6]

Sturm V, 1996, APPL PHYS B-LASERS O, V63, P363

[7]

WOOD RM, 1986, LASER DAMAGE OPTICAL, pCH4

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