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提出利用自散焦介质作为载体测量光折变晶体自泵浦相位共轭的微小频移的新方法，适宜用于区分二波耦合、四波混频对频移的贡献，为研究光折变自泵浦相位共轭频移的产生机制提供了一种新的可能的途径。
A new method to measure the small frequency shift of the self-pumped phase conjugate by photoluminescence self-defocusing is proposed, which is suitable for distinguishing the contribution of two-wave coupling and four-wave mixing to frequency shift. Self-pumping phase conjugate frequency shift mechanism provides a new possible way.