echo \Gevman\OwlCarousel\OwlCarousel::widget([
    'elements' => [
        Html::img(null, ['class' => 'owl-lazy', 'data' => ['src' => Yii::getAlias('@web/images/image-1.jpg')]]),
        Html::img(null, ['class' => 'owl-lazy', 'data' => ['src' => Yii::getAlias('@web/images/image-2.jpg')]]),
        Html::img(null, ['class' => 'owl-lazy', 'data' => ['src' => Yii::getAlias('@web/images/image-3.jpg')]]),
    ],
    'config' => [
        'items' => 1,
        'lazyLoad' => true,
        'loop' => true,
        'dots' => true,
        'autoplay' => true,
    ]
]);

更多选项请查看 Owl Carousel 2 官方文档