Femtosecond Temporal Imaging Systems

该提案描述了开发时间成像系统的基本研究活动，该系统能够扩展压缩超快光学波形的时间尺度，同时保持包络轮廓的完整性。其目标或提议是开发能够分辨光学波形中的飞秒特征的时间成像系统。时间透镜将被制造为电光相位调制器，将为调制器设计谐振器，将采用具有极高电光系数的新晶体，并将使用甚高频(毫米波)源来驱动谐振调制器。将使用最先进的三维电磁场建模程序对复杂的介质加载谐振器的场进行建模；将使用通过场的路径积分来确定预期的峰值相位偏差。实用的时间成像系统的发展可能会极大地影响许多应用：通信、激光选择性光化学和光学波形的研究，这些都超出了现有探测系统的能力。

This proposal describes basic research activities to develop temporal imaging systems capable of expanding of compressing the time scales of ultrafast optical waveforms while maintaining the integrity of the envelope profiles. The objective or the proposal is to develop temporal imaging systems capable of resolving femtosecond features in optical waveforms. Time lenses will be fabricated as electro-optic phase modulators resonators will be designed for the modulators, new crystals with very high electro-optic coefficients will be employed and very high frequency (mm wave) sources will be used to drive the resonant modulators. New state-of-the-art three dimensional electromagnetic field modeling programs will be used to model the field for the complicated dielectric-loaded resonators; path-integrals through the fields will be used to establish the peak phase deviations to be expected. Many applications could be greatly impacted by the development of practical temporal imaging systems: communications, laser selective photochemistry, and investigation of optical waveforms which ex ceed the capacity of currently available detection systems.