Abstract
We report on a frequency resolved optical gating (FROG) system which allows the reconstruction of amplitude and phase of picosecond pulses generated by mode-locked diode laser oscillators and amplifiers. The main challenge of developing such a FROG system is the required high spectral resolution. In the spectrometer a cylindrical grating with 1200 lines/mm and a radius of curvature of 3 m is used. A width of the illuminated area of 15 cm provides in a spectral resolution exceeding 2 GHz (1.4 pm) at 460 nm. The FROG system is, thus, well suited for analyzing ps-pulses with durations of up to 80 ps and a corresponding fourier-limited spectral width of 0.017 nm.
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42.55.Px; 42.65.Re; 42.60.Fc; 42.30.Rx
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Fuchs, H., Woll, D., Ulm, T. et al. High resolution FROG system for the characterization of ps laser pulses. Appl. Phys. B 88, 393–396 (2007). https://doi.org/10.1007/s00340-007-2730-7
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DOI: https://doi.org/10.1007/s00340-007-2730-7