The presence of pulse front tilt (PFT), caused by angular dispersion (AD) in femtosecond laser pulses, could degrade the performance of the laser system and/or impact the experimental yields. We present a single-shot diagnostic capable of measuring the AD in the x–y plane by adopting an intensity mask. It can be applied to stretched pulses, making it ideal for diagnosing the AD along the amplification chain of a high-power laser system, and to ultrashort pulses exiting from an optical compressor. In this way, it can help in properly characterizing a laser pulse before it is delivered to the target area. In this Letter, we present experimental evidence of AD retrieval for different compression configurations, supported by theoretical analysis.

中文翻译：

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创新的单次二维脉冲前倾诊断

由飞秒激光脉冲中的角色散 (AD) 引起的脉冲前倾 (PFT) 的存在可能会降低激光系统的性能和/或影响实验产量。我们提出了一种能够测量 AD 的单次诊断X–是的平面采用强度掩模。它可以应用于拉伸脉冲，使其成为诊断高功率激光系统放大链上的 AD 以及从光学压缩器退出的超短脉冲的理想选择。通过这种方式，它可以帮助在激光脉冲被传送到目标区域之前对其进行正确表征。在这封信中，我们提供了理论分析支持的不同压缩配置的 AD 检索的实验证据。