The invention can control the carrier-envelope phase of the optical light field and its temporal evolution inside a laser without change of the other pulse parameters (such as chirp, pulse width and pulse energy).
Traditional approach of changing phase or frequency via material insertion or removal also simultaneously alters the chirp and/or energy of the transmitted pulses.
The invention is a novel linear device, a composite glass plate, which changes the ratio of two materials with similar refractive indices and second order dispersion but different ratios of group and phase velocities. By doing so, the dispersion is practically kept constant, and the prism effect due to the slightly different refractive indices is negligible and consequently, the effect on pulse width, energy, spectrum, spatial chirp and CE frequency signal strength are minimized.
- Minimizes impacts on chirp parameters while controlling CE phase or frequency of optical light
be very helpful in many experiments where a precise and “neutral” control of
the CE phase is desirable