Generation of optical-field controlled high-intensity laser pulses

We demonstrated control of electric fields of optical pulses by combining the pulse shaper with carrier-envelope phase (CEP) stabilized lasers. We employed spectral phase controller known as the pulse shaper for controlling the pulse envelope and the CEP. In order to evaluate the accuracy of the device, we measured the CEP shift, and delay shift by the spectral interferometry method and confirmed that the CEP and the delay were precisely controlled by the pulse shaper independently. We demonstrated control of the CEP and the relative spectral phase of amplified high-intensity laser pulses by installing the pulse shaper in a CEP stabilized amplifier system. The pulse shaper worked as an ideal CEP shifter because it controlled the phase of very broad spectrum precisely, and independent control of CEP was achieved.