Wavelet-transform analysis for carrier-envelope phase extraction of amplified ultrashort optical pulses |
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| Authors: | Yuqiang Deng Shiying Cao Jing Yu Tao Xu Qiming Fan Ching-yue Wang Zhigang Zhang |
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| Affiliation: | aDivision of Metrology in Optics and Laser, National Institute of Metrology, Beijing 100013, PR China;bSchool of Precision Instruments and Optoelectronics Engineering, Tianjin University, Tianjin 300072, PR China;cSchool of Electronics Engineering and Computer Science, Peking University, Beijing 100871, PR China |
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| Abstract: | We introduced a wavelet-transform technique into the carrier-envelope phase extraction from the spectral interferogram of amplified ultrashort optical pulses. With this technique, carrier-envelope phases were directly extracted from the ridges of the wavelet transforms. This technique did not need filters; therefore, the uncertainty introduced from filter was avoided naturally. The Wavelet transforms technique produced a two-dimensional topography on which the time-frequency information of the spectral interferogram was shown apparently. |
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| Keywords: | Ultrashort pulses Carrier-envelope phase Wavelet transforms |
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