Laser-damage of cleaved and polished CaF2 at 248 nm

被引:30
作者
Gogoll, S
Stenzel, E
Johansen, H
Reichling, M
Matthias, E
机构
[1] FREE UNIV BERLIN,FACHBEREICH PHYS,D-14195 BERLIN,GERMANY
[2] MAX PLANCK INST MIKROSTRUKT PHYS,D-06120 HALLE,GERMANY
关键词
D O I
10.1016/0168-583X(96)00061-4
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
We investigated the surface damage of CaF2 induced by irradiation with 248 nm/14 ns laser pulses. Experiments were carried out in single shot mode in air. The photoacoustic deflection technique was utilized for in situ damage detection and irradiated spots were inspected by scanning electron microscopy. Fracture along the natural cleavage planes was observed. Comparison of cleaved and polished samples in connection with modelling the thermoelastic response of the crystal during damage reveals that polishing causes enhanced surface absorption, Damage topography at the periphery of the irradiated spots was used to obtain a rough estimate of the temperature rise leading to fracture. Electron microscopy shows surface modifications of weakly irradiated spots where no ablation or cracking could be detected.
引用
收藏
页码:279 / 283
页数:5
相关论文
共 21 条
[1]   ABSORBING PRECIPITATES IN CADMIUM TELLURIDE - ESTIMATES FOR CATASTROPHIC LASER-DAMAGE THRESHOLDS [J].
BENNETT, HS ;
CANTRELL, CD .
APPLIED OPTICS, 1977, 16 (11) :2931-2933
[2]   AN INVESTIGATION OF EFFECTS OF X-RAYS ON UNDOPED AND ON HYDROGEN DOPED ALKALINE EARTH FLUORIDES [J].
BESSENT, RG ;
HAYES, W ;
HODBY, JW ;
SMITH, PHS .
PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES, 1969, 309 (1496) :69-+
[3]  
Dietrich B., 1977, Kristall und Technik, V12, P609, DOI 10.1002/crat.19770120612
[4]  
Dunken H., 1991, Experimentelle Technik der Physik, V39, P71
[5]   LASER MASS-SPECTROMETRIC STUDIES OF OPTICAL-DAMAGE IN CAF2 [J].
ESTLER, RC ;
APEL, EC ;
NOGAR, NS .
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, 1987, 4 (02) :281-286
[6]  
Eva E, 1996, APPL PHYS A-MATER, V62, P143
[7]  
GALLANT DJ, 1988, NIST SPEC PUBL, V752, P159
[9]   Laser damage of CaF2(111) surfaces at 248nm [J].
Gogoll, S ;
Stenzel, E ;
Reichling, M ;
Johansen, H ;
Matthias, E .
APPLIED SURFACE SCIENCE, 1996, 96-8 :332-340
[10]  
GOGOLL S, 1994, AIP CONF P, V288, P50