TY - JOUR
T1 - Vacuum-cored hollow waveguide for transmission of high-energy, nanosecond Nd:YAG laser pulses and its application to biological tissue ablation
AU - Sato, Shunichi
AU - Ashida, Hiroshi
AU - Arai, Tsunenori
AU - Shi, Yi Wei
AU - Matsuura, Yuji
AU - Miyagi, Mitsunobu
PY - 2000/1/1
Y1 - 2000/1/1
N2 - 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 1-m-long, 1-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/cm2), at a repetition rate of 10 Hz in a 90°-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.
AB - 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 1-m-long, 1-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/cm2), at a repetition rate of 10 Hz in a 90°-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.
UR - http://www.scopus.com/inward/record.url?scp=0002679054&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0002679054&partnerID=8YFLogxK
U2 - 10.1364/OL.25.000049
DO - 10.1364/OL.25.000049
M3 - Article
C2 - 18059778
AN - SCOPUS:0002679054
SN - 0146-9592
VL - 25
SP - 49
EP - 51
JO - Optics Letters
JF - Optics Letters
IS - 1
ER -