Angular dependence of the thermal-lens effect on LiSrAlF6 and LiSrGaF6 single crystals.
We apply thermal-lens (TL) spectrometry to measure the angular dependence of the TL effect on colquiriite single crystals. The experiments were performed with LiSrAlF(6) and LiSrGaF(6) using a two-beam mode-mismatched configuration. The results show that it is possible to minimize the TL effect by selecting the appropriate crystal orientation. Our data also show that the anisotropy of the linear thermal expansion coefficient drives the amplitude of the TL effect, including the inversion from focusing to defocusing as the crystal orientation angle tends to the c-axis direction. The results may be useful for those working to develop a high-power laser using LiSrAlF(6)(:Cr) and LiSrGaF(6)(:Cr) single crystals, allowing for optimization of the designed laser cavity.
Steimacher
Alysson
A
Departamento de Física, Universidade Estadual de Maringá, CEP 87020-900, Maringá, Paraná, Brazil.
Sakai
Otavio Akira
OA
Bento
Antonio Carlos
AC
Baesso
Mauro Luciano
ML
Medina
Antonio N
AN
Lima
Sandro Marcio
SM
Catunda
Tomaz
T