Cr4+ : YAG 레이저에서 열 렌즈 효과에 따른 공진기의 안정영역과 빔 허리 및 비점수차의 보상 = Effects of the Thermal Lensing on stable Region, Beam Waist, and AstigmaticCompensation of Z-fold Cr4+:YAG laser Cavity

다국어 초록 (Multilingual Abstract)

We obtained analytic solutions of boundary conditions to the stable region of Z-fold Cr4+ :YAG laser cavity when the conditions
are with and without thermal lensing effect. Also we investigated the influence of the thermal lensing effect on the stability of
cavity, beam waist, and astigmatic compensation using aberration transformation matrices.
The thermal lensing effect almost has no influence on the stable region of the cavity when the crystal is located in the middle
of two concave mirrors and when the distances from the concave mirror to the reflecting mirror and the output coupler are the
same. The beam waist, however, is affected more in a tangential plane than in a sagittal plane, and so it is difficult to have
astigmatic compensation when the thermal lensing effect exists. This result means that the thermal lensing effect should be
considered even for the Kerr-lens mode-locking.

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