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Attosecond active synchronization of passively mode-locked lasers by balanced cross correlation 总被引:1,自引:0,他引:1
Schibli TR Kim J Kuzucu O Gopinath JT Tandon SN Petrich GS Kolodziejski LA Fujimoto JG Ippen EP Kaertner FX 《Optics letters》2003,28(11):947-949
A balanced cross correlator, the optical equivalent of a balanced microwave phase detector, is demonstrated. Its use in synchronizing an octave-spanning Ti:sapphire laser and a 30-fs Cr:forsterite laser yields 300-attosecond timing jitter measured from 10 mHz to 2.3 MHz. The spectral overlap between the two lasers is strong enough to permit direct detection of the difference in carrier-envelope offset frequency between the two lasers. 相似文献
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Matos L Kleppner D Kuzucu O Schibli TR Kim J Ippen EP Kaertner FX 《Optics letters》2004,29(14):1683-1685
We describe a self-referenced optical frequency comb generator based on an octave-spanning, prismless Ti:sapphire laser. Dispersion compensation is provided by novel double-chirped mirror pairs and BaF2 wedges. Current versions operate at 80 and 150 MHz. The compact prismless design allows system scaling to a gigahertz repetition rate. Its carrier-envelope beat note is intrinsically stable with a signal-to-noise ratio of 30 dB in a 100-kHz bandwidth. The octave is reached at 25 dB below the average power level. The in-loop accumulated phase error is 1.4 rad (20 mHz to 1 MHz). The technique has the advantages of simplicity and stability compared with previous designs. 相似文献
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