Moreover, experiment characterization of pulses two femtosecond pulses by the frequency-resolved optical gating (FROG) characterization technique is also given.

给出了频率分辨光开关法（FROG）技术识别超快时域两脉冲的实验结果。

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The second-harmonic generation frequency-resolved optical gating (SHG-FROG) analyzer can be used to exactly measure the pulses characteristics.

二次谐波频率分辨光学门（SHG-FROG）是能够准确测量短脉冲多项特性参量的新技术。

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