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Collinear interferometer with variable delay for carrier-envelope offset frequency measurement
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View: Figures


Image of FIG. 1.
FIG. 1.

(a) The dependence of the group delay on the wavelength of light in a supercontinuum pulse generated in a MSF. The points represent the measured values and the curve is simulated using the known dispersion of the fiber and the propagation distance shorter by 1.5 cm than the actual length of the fiber. (b) The spectrum of the generated supercontinuum.

Image of FIG. 2.
FIG. 2.

The calcite Babinet–Soleil compensator for introducing a variable delay between the visible component and the second harmonic of the infrared component of the supercontinuum. The optic axes of the crystals are marked with dashed lines.

Image of FIG. 3.
FIG. 3.

-to- crystal 2P, 1P; wave plate-HW half .setuppolarizers; MSF micro-structured fiber; L1–L4, lenses; TP thin polarizer; VDC variable delay compensator; BBO beta barium-borate crystal; DG diffraction grating; APD avalanche photodiode.

Image of FIG. 4.
FIG. 4.

The S/N ratio of the carrier-envelope offset frequency of a Ti:sapphire oscillator measured in a -to- interferometer as a function of the delay introduced by the calcite delay compensator (measured with a spectrum analyzer with 100 kHz RBW).

Image of FIG. 5.
FIG. 5.

Power spectrum of the phase noise and integrated phase error of the common-path interferometer based on a Babinet–Soleil compensator and the electric noise of the detection setup.


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Scitation: Collinear interferometer with variable delay for carrier-envelope offset frequency measurement