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- W2362534884 abstract "Using the SrTiO3 crystal as the optical Kerr medium,we constructe an ultrafast time-resolved measuring system based on the optical Kerr-gate technique. Under the intense light, the SrTiO3 crystal not only exhibits the optical Kerr effect, but also emits a wide spectrum of two-photon excited fluorescence. Consequently, we extract the signals from the background fluorescence with the same frequency using the lock-in amplification technique. As well, a specialized automatic data acquisition system is designed to improve the measurement efficiency. To avoid the nonlinear response of the detector resulting from the saturated exposure by the background fluorescence and the scattered pump light, we cover the optical path of the signal and increase the distance between the SrTiO3 crystal and the detector. Accordingly we experimentally obtain a resolution of around 200 fs using the laser pulses with duration of less than 150 fs and wavelength of 800 nm as the pump and its double frequency as the signal." @default.
- W2362534884 created "2016-06-24" @default.
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- W2362534884 date "2009-01-01" @default.
- W2362534884 modified "2023-09-26" @default.
- W2362534884 title "Improvement of the Ultrafast Time-Resolved Measuring System Based on the Optical Kerr-Gate Technique" @default.
- W2362534884 hasPublicationYear "2009" @default.
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