与呋喃同系物的光克尔效应相比，吡咯同系物是具有良好应用前景的非线性光学材料。

Compared with the optical Kerr effect of the furan homologues, pyrrole homologues are good nonlinear optical materials in application prospect.

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因此，SESAM除了其量子阱材料的可饱和吸收效应能启动锁模外，本身的负克尔效应也有助于锁模的自启动。

These reveal that the negative Kerr effect of the SESAM can contribute to the self-starting of mode-locked lasers besides the saturable absorption mechanism.

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用表面磁光克尔效应测量铁磁材料的磁滞回线，并求得在饱和状态下的克尔旋转角。

Hysteresis loop of ferromagnetic materials are measured by using surface magneto-optic Kerr effect, and the Kerr rotation Angle is obtained.

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