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劳伦斯·里弗莫尔国家实验室已发展一种时间显微镜 ,可将超短脉冲光波形展宽10 3倍 ,使其测量简化 ,该法事先使输入波形色散 ,然而将它与钛宝石激光的弥散啁啾脉冲在偏硼酸钡晶体中混频。混频信号再通过群速延迟色散放大的光学系统聚焦。该装置有 30 0 fs的分辨率和 5 .7ps的输
Lawrence Livermore National Laboratory has developed a time microscope that broadens the ultra-short pulse waveform by 103 times to simplify its measurement. This method first disperses the input waveform, but disperses it with the sapphire laser Chirped pulses are mixed in barium metaborate crystals. The mixed signal is then focused by the optical system with delayed amplification of the group velocity delay. The device has 30 fs resolution and 5.7ps output