4.6 Article

Ultrafast double-pulse parametric amplification for precision Ramsey metrology

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OPTICS EXPRESS
卷 16, 期 10, 页码 7071-7082

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OPTICAL SOC AMER
DOI: 10.1364/OE.16.007071

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We demonstrate phase stable, mJ-level parametric amplification of pulse pairs originating from a Ti: Sapphire frequency comb laser. The amplifier-induced phase shift between the pulses has been determined interferometrically with an accuracy of approximate to 10 mrad. Typical phase shifts are on the order of 50-200 mrad, depending on the operating conditions. The measured phase-relation can be as stable as 20 mrad rms (1/300(th) of an optical cycle). This makes the system suitable for Ramsey spectroscopy at short wavelengths by employing harmonic upconversion of the double-pulses in nonlinear media. (C) 2008 Optical Society of America.

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