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http://dx.doi.org/10.3807/KJOP.2006.17.5.447

Effect of the Thermal Lensing on stable Region, Beam Waist and Astigmatic Compensation of Z-fold Cr4+ : YAG laser Cavity  

Lee, Bong-Yeon (Research institute of Basic Sciences, Chungnam National University)
Publication Information
Korean Journal of Optics and Photonics / v.17, no.5, 2006 , pp. 447-454 More about this Journal
Abstract
We obtained analytic solutions of boundary conditions to the stable region of Z-fold $Cr^{4+}$ : YAG laser cavity when the conditions are with and without thermal tensing effect. Also we investigated the influence of the thermal tensing effect on the stability of cavity, beam waist, and astigmatic compensation using aberration transformation matrices. The thermal tensing 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 tensing effect exists. This result means that the thermal tensing effect should be considered even for the Kerr-lens mode-locking.
Keywords
$Cr^{4+}$ : YAG laser cavity; Stable region; Astigmatic compensation; Beam waist; Thermal tensing effect;
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Times Cited By KSCI : 2  (Citation Analysis)
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