Optical Frequency Measurement with a Mode-Locked Laser
نویسندگان
چکیده
منابع مشابه
Absolute Optical Frequency Measurement of the Cesium D1 Line with a Mode-Locked Laser
We have measured the absolute optical frequency of the cesium D1 line at 335 THz (895 nm). This frequency provides an important link for a new determination of the fine structure constant a. The D1 line has been compared with the fourth harmonic of a methane stabilized He-Ne laser at 88.4 THz (3.39 mm). To measure the frequency mismatch of 18.39 THz between 4 3 88.4 THz 354 THz and the D1 lin...
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We have used the comb of optical frequencies emitted by a mode-locked laser as a ruler to measure differences of as much as 20 THz between laser frequencies. This is to our knowledge the largest gap measured with a frequency comb, with high potential for further improvements. To check the accuracy of this approach we show that the modes are distributed uniformly in frequency space within the ex...
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The absolute frequency of the In(+) 5s(2) (1)S(0)5s5p (3)P(0) clock transition at 237 nm was measured with an accuracy of 1.8 parts in 10(13). Using a phase-coherent frequency chain, we compared the (1)S(0)(3)P(0) transition with a methane-stabilized HeNe laser at 3.39 microm, which was calibrated against an atomic cesium fountain clock. A frequency gap of 37 THz at the fourth harmonic of the H...
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We measured the optical linewidths of a passively mode-locked quantum dot laser and show that, in agreement with theoretical predictions, the modal linewidth exhibits a parabolic dependence with the mode optical frequency. The minimum linewidth follows a Schawlow-Townes behavior with a rebroadening at high power. In addition, the slope of the parabola is proportional to the RF linewidth of the ...
متن کاملUltralow-jitter, 1550-nm mode-locked semiconductor laser synchronized to a visible optical frequency standard.
Using high-bandwidth feedback, we have synchronized the pulse train from a mode-locked semiconductor laser to an external optical atomic clock signal and achieved what is to our knowledge the lowest timing jitter to date (22 fs, integrated from 1 Hz to 100 MHz) for such devices. The performance is limited by the intrinsic noise of the phase detector used for timing-jitter measurement. We expect...
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ژورنال
عنوان ژورنال: The Review of Laser Engineering
سال: 2007
ISSN: 0387-0200,1349-6603
DOI: 10.2184/lsj.35.228