TY - JOUR
T1 - 65MHz bandwidth measurement of thermal emission induced by ArF excimer laser ablation of cornea
AU - Ishihara, Miya
AU - Sato, Shunichi
AU - Arai, Tsunenori
AU - Obara, Minoru
AU - Kikuchi, Makoto
PY - 2000/1/1
Y1 - 2000/1/1
N2 - We measured thermal emission from cornea surface during and just after ArF excimer laser pulse with 65MHz bandwidth, corresponding to 15ns rise-time. The rise-time of the thermal emission measurement should be the same order of the heating pulse duration (ArF excimer laser pulse duration of 25ns) to obtain the rapid temperature change of cornea surface. To acquire the available rise-time, we employed a 150MHz cut off frequency photovoltaic HgCdTe detector with 100MHz preamplifiers. We measured the peak temperature of 175°C at the fluence of 160mJ/cm2. The irradiated cornea temperature decreased rapidly with 280ns in time constant. We measured the highest temperature elevation during the ArF excimer laser ablation of the cornea comparing with previous reports using our high speed temperature measurement system.
AB - We measured thermal emission from cornea surface during and just after ArF excimer laser pulse with 65MHz bandwidth, corresponding to 15ns rise-time. The rise-time of the thermal emission measurement should be the same order of the heating pulse duration (ArF excimer laser pulse duration of 25ns) to obtain the rapid temperature change of cornea surface. To acquire the available rise-time, we employed a 150MHz cut off frequency photovoltaic HgCdTe detector with 100MHz preamplifiers. We measured the peak temperature of 175°C at the fluence of 160mJ/cm2. The irradiated cornea temperature decreased rapidly with 280ns in time constant. We measured the highest temperature elevation during the ArF excimer laser ablation of the cornea comparing with previous reports using our high speed temperature measurement system.
UR - http://www.scopus.com/inward/record.url?scp=0033704888&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0033704888&partnerID=8YFLogxK
U2 - 10.1117/12.388031
DO - 10.1117/12.388031
M3 - Conference article
AN - SCOPUS:0033704888
VL - 3914
SP - 122
EP - 126
JO - Mathematical Social Sciences
JF - Mathematical Social Sciences
SN - 0165-4896
T2 - Laser-Tissue Interaction XI: Photochemical, Photothermal, and Photomechanical
Y2 - 22 January 2000 through 27 January 2000
ER -
