论文标题
通过腔内相扩散器的退化腔激光抑制斑点
Accelerating speckle suppression by a degenerate cavity laser with an intracavity phase diffuser
论文作者
论文摘要
快速斑点抑制对于用激光照明的时间分辨的全场成像至关重要。在这里，我们介绍了一种加速激光发射的空间反应的方法，从而在纳秒集成时间范围内实现了斑点抑制。该方法依赖于将腔内相扩散器插入变性的腔激光器中，以打破横向模式的频率退化并拓宽激光频谱。激光排放的超快破裂性导致斑点的降低与$ 3 \％$相比，小于1纳秒。
Fast speckle suppression is crucial for time-resolved full-field imaging with laser illumination. Here, we introduce a method to accelerate the spatial decoherence of laser emission, achieving speckle suppression in the nanosecond integration time scale. The method relies on the insertion of an intracavity phase diffuser into a degenerate cavity laser to break the frequency degeneracy of transverse modes and broaden the lasing spectrum. The ultrafast decoherence of laser emission results in the reduction of speckle contrast to $3\%$ in less than 1 nanosecond.
