Vol. 39, issue 04, article # 8

Abstract:

Sources of short-wavelength radiation generated by the interaction of high-intensity radiation with matter are in demand for experimental research in physics, chemistry, and biology. Reproducible parameters of the generated short-wavelength pulses require the use of femtosecond pulses with stabilized carrier-envelope phase (CEP). The work is devoted to the study of the effect of pulse envelope noise on the error in determining the CEP. For the CEP stabilization system based on f-2f interferometer with spectral interference pattern resolution, it is shown that an increase in noise of an original pulse increases the error in determining CEP from supercontinuum radiation, which attains about 100 mrad at an envelope noise of 1%. An increase in the radiation peak power increases the influence of noise on the error in determining CEP due to supercontinuum generation. The results can be used to develop and optimize systems for measuring the femtosecond pulses carrier-envelope phase with pulse repetition rates in kilohertz range.

Keywords:

supercontinuum, CEP stabilization, f-2f interferometry, femtosecond pulses

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