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Rapid pulse shaping with homodyne detection for measuring nonlinear optical signals

机译:具有零差检测功能的快速脉冲整形可测量非线性光信号

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We have designed a common-mode interferometric acousto-optic pulse shaper that is capable of shaping individual pulses differently from a mode-locked laser. The design enables the measurement of weak nonlinear optical signals such as two-photon absorption and self-phase modulation at megahertz rates. The experimental apparatus incorporates homodyne detection as a means of resolving the phase of the detected signals. The fast data acquisition rate and the ability to perform measurements in scattering media make this experimental apparatus amenable to imaging applications analogous to measurements of two-photon fluorescence using a mode-locked laser.
机译:我们设计了一种共模干涉声光脉冲整形器,能够与锁模激光器不同地整形单个脉冲。该设计能够以兆赫兹速率测量微弱的非线性光学信号,例如双光子吸收和自相位调制。该实验装置结合了零差检测作为解决检测信号相位的一种手段。快速的数据采集速率和在散射介质中执行测量的能力使该实验设备适用于类似于使用锁模激光器测量双光子荧光的成像应用。

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