LASER WAVELENGTH DEPENDENCE OF YBA2CU3OY LASER-ABLATION PLUMES

被引：4

作者：

PALAU, J ^{[1
]}

SOWINSKA, M ^{[1
]}

VARELA, M ^{[1
]}

SUMM, P ^{[1
]}

ESTEVE, J ^{[1
]}

SERRA, P ^{[1
]}

MORENZA, JL ^{[1
]}

MIEHE, JA ^{[1
]}

机构：

[1] CTR RECH NUCL,APPL OPT GRP,F-67037 STRASBOURG 2,FRANCE

来源：

APPLIED SURFACE SCIENCE | 1995年 / 86卷 / 1-4期

关键词：

D O I：

10.1016/0169-4332(94)00402-1

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The plume produced by laser ablation of an YBa2Cu3Oy target under irradiation with different laser beam wavelengths has been studied by means of intensified CCD imaging. ArF excimer (193 nm) and Nd:YAG (532 and 1064 nm) laser beams were used. The fluence was about 1 J/cm(2). The investigation was carried out under high vacuum. The plume images show the evolution of different velocity components which depend on the laser wavelength. The fastest one shows a front velocity near 10(4) m/s. It is the dominant feature during many mu s in the images obtained for 193 nm and can be also seen for the case of 532 nm. A slower emission, with an estimated velocity less than or equal to 3 X 10(2) m/s, can also be observed for the case of 193 nm laser irradiation. Two slower velocity components are present in the 532 and 1064 nm laser plumes. One of them has a front velocity around 3 x 10(2) and 7 X 10(2) m/s for 532 and 1064 nm laser wavelength, respectively. The velocity of the other one is estimated as less than or equal to 10(2) m/s.

引用

页码：59 / 63

页数：5

共 11 条

[1] SPECTROSCOPIC AND ION PROBE MEASUREMENTS OF KRF LASER ABLATED Y-BA-CU-O BULK SAMPLES [J].