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Author: search.filters.author.Hsieh, WFSubject: search.filters.subject.resonators

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    Item type:Item,
    The preferable resonators for Kerr-lens mode-locking determined by stability factors of their iterative maps
    (1998-10-15)
    Wei, MD
    ;
    Hsieh, WF
    ;
    Sung, CC
    ;
    光電工程研究所
    ;
    Institute of EO Enginerring
    The generalized stability factor of a general resonator was obtained from its iterative map based on the linear stability analysis. Since a physical system tends to stay with high stability, the preferred resonator for Kerr-lens mode-locking (KLM) is determined by the relative stability between KLM and CW operations. With this criterion the preferable KLM regions agree with the previous experimental self-starting regions when the Ken medium is located around the center of the resonator. (C) 1998 Elsevier Science B.V. All rights reserved.
  • Thumbnail Image
    Item type:Item,
    The preferable resonators for Kerr-lens mode-locking determined by stability factors of their iterative maps
    (1998-10-15)
    Wei, MD
    ;
    Hsieh, WF
    ;
    Sung, CC
    ;
    光電工程學系
    ;
    Department of Photonics
    The generalized stability factor of a general resonator was obtained from its iterative map based on the linear stability analysis. Since a physical system tends to stay with high stability, the preferred resonator for Kerr-lens mode-locking (KLM) is determined by the relative stability between KLM and CW operations. With this criterion the preferable KLM regions agree with the previous experimental self-starting regions when the Ken medium is located around the center of the resonator. (C) 1998 Elsevier Science B.V. All rights reserved.
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    Item type:Item,
    Transverse excess noise factor and transverse mode locking in a gain-guided laser
    (2005-01-17)
    Chen, CH
    ;
    Tai, PT
    ;
    Chiu, WH
    ;
    Hsieh, WF
    ;
    光電工程學系
    We use the Collins integral together with a rate equation to calculate the transverse mode profiles near g(1)g(2) = 1/4 in a tightly focused end-pumped Nd:YVO4 laser. The transverse mode locking is confirmed from the mode decomposition into the degenerate empty-cavity eigenmodes and from the observation of beam profile variation along the propagation distance. We obtain that the calculated transverse excess noise factor without considering the thermal effect is consistent with the previous research and it depends on the pump size. We further study the influence of the thermal lens effect on the K factor and discuss how to suppress the laser instabilities that occur near the degeneracy. (C) 2004 Elsevier B.V. All rights reserved.
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    Item type:Item,
    Dynamics of an optical resonator determined by its iterative map of beam parameters
    (1998-01-15)
    Wei, MD
    ;
    Hsieh, WF
    ;
    Sung, CC
    ;
    光電工程學系
    ;
    Department of Photonics
    We use the residue of the map to study the stability and Gaussian beam dynamics of a general optical resonator. The map is constructed from space domain matrix formalism. For a lossless system we find that the residue is a function of resonator g-parameters' product and new critical stable curves exist within the geometrically stable regions. The dynamic behavior of a dissipative resonator with loss optical element is similar to a damping oscillatory motion and can be determined by the corresponding conservative resonator without those loss elements. (C) 1998 Elsevier Science B.V.