本篇論文的研究目的是在主腔內通入播種光，藉此影響主腔內的模態，本研究中，我們將激發光源聚交在主腔的軸上與離軸上，並且成功使得播種光影響主腔，只是效果不是那麼明顯，期間，為了使得改變播種光的場型更加的方便，我們在實驗中加入液晶空間光調變器，藉此達到改變播種光的效果，同時我們也有做脈衝雷射，在脈衝雷射模式下我們同樣可以看到播種光確實有影響主腔內的模態。

The purpose of this paper is to introduce seeding light into the main cavity to affect the mode in the main cavity. In this study, we focused the excitation light source on and off the axis of the main cavity, and successfully made the seeding light affect the main cavity, but the effect was not so obvious. During this period, in order to make it more convenient to change the field pattern of the seeding light, we added a liquid crystal spatial light modulator to the experiment to achieve the effect of changing the seeding light. At the same time, we also did pulsed lasers. Under the pulsed laser, we can also see that the seeding light does affect the mode in the main cavity.

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