Femtosecond Lasers for Optical Clocks and Low Noise Frequency Synthesis

Ye, Jun; Cundiff, Steven T.; Diddams, Scott A.; Hollberg, L.

doi:10.1007/0-387-23791-7_9

Cited by 10 publications

(16 citation statements)

References 108 publications

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“…The time structure of the produced PE bunch is identical to that of the light pulse. Along the way the electrons are passed through the circular sweep RF deflection system, consisting of electrodes (4) and the 4 / coaxial RF cavity (6), which operates at 500 MHz. They are deflected and form a circle on the screen of the detector, where the time structure of the input photon signal is transferred into spatial PE image (5) on a circle, calibrated in time by the sweep itself, and detected.…”

Section: Principles Of Operationmentioning

confidence: 99%

“…The recent development of ultrabroad femtosecond optical frequency combs (OFC) based on mode-locked lasers has provided a relatively simple and straightforward way to translate optical frequency standards to other optical or microwave frequencies [6,7]. We are proposing a new time-of-flight, TOF system based on a recently developed radio frequency (RF) phototube [8] and OFC technique.…”

mentioning

confidence: 99%

“…The basic concepts are the same for an atomic clock based on an optical transition at a much higher frequency. The recent development of ultrabroad femtosecond optical combs based on mode-locked lasers has provided a relatively simple and straightforward way to translate optical frequency standards to other optical and microwave frequencies [6,7]. The Fourier transform of a femtosecond pulse train is a comb of evenly spaced frequencies, typically spanning some 10 % of the optical range.…”

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confidence: 99%

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Radio frequency phototube and optical clock: High resolution, high rate and highly stable single photon timing technique

Margaryan

2011

Nuclear Instruments and Methods in Physics Research Section A:

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Recently a new experimental program of novel systematic studies of light hypernuclei using pionic decay was established at JLab (Study of Light Hypernuclei by Pionic Decay at JLab, JLab Experiment PR-08-012). The highlights of the proposed program include high precision measurements of binding energies of hypernuclei by using a high resolution pion spectrometer, HπS. The average values of binding energies will be determined within an accuracy of ~10 keV or better. Therefore, the crucial point of this program is an absolute calibration of the HπS with accuracy 10 -4 or better. The merging of continuous wave laser-based precision optical-frequency metrology with mode-locked ultrafast lasers has led to precision control of the visible frequency spectrum produced by mode-locked lasers. Such a phase-controlled mode-locked laser forms the foundation of an optical clock or "femtosecond optical frequency comb (OFC) generator," with a regular comb of sharp lines with well defined frequencies. Combination of this technique with a recently developed radio frequency (RF) phototube results in a new tool for precision time measurement. We are proposing a new time-of-flight (TOF) system based on an RF phototube and OFC technique. The proposed TOF system achieves 10 fs instability level and opens new possibilities for precise measurements in nuclear physics such as an absolute calibration of magnetic spectrometers within accuracy 10 -4 -10 -5 .

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Section: Principles Of Operationmentioning

confidence: 99%

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confidence: 99%

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confidence: 99%

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Radio frequency phototube and optical clock: High resolution, high rate and highly stable single photon timing technique

Margaryan

2011

Nuclear Instruments and Methods in Physics Research Section A:

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“…In contrast, over recent times the stabilization of lasers to high finesse optical cavities has become a mature technology and reliable devices based around vibration-immune cavities show a fractional frequency stability (FFS) that is routinely about 1x10 -15 from 0.1s to 100s or better [3][4][5]. At the same time, femtosecond laser optical frequency combs have emerged as the ultimate low noise optical-to-microwave frequency divider delivering the potential for low noise microwave generation [6]. By combining an ultra-stable laser with this frequency division technique it should be possible to generate a signal with a phase noise performance that surpasses all existing microwave sources over a broad range of the Fourier spectrum.…”

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confidence: 99%

Ultra-low-noise microwave extraction from fiber-based optical frequency comb

et al. 2009

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In this letter we report on an all optical-fiber approach to the generation of ultra-low noise microwave signals. We make use of two erbium fiber mode-locked lasers phase locked to a common ultra stable laser source to generate an 11.55 GHz signal with an unprecedented relative phase noise of -111 dBc/Hz at 1 Hz from the carrier. The residual frequency instability of the microwave signals derived from the two optical frequency combs is below 2.3x10 -16 at 1s and about 4x10 -19 at 6.5x10 4 s (in 5Hz Bandwidth, three days continuous operation).

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“…The technology of optical frequency combs and their applications have developed rapidly over the past five years. Some recent reviews give good summaries of the field [11,[159][160][161][162]. In contrast to the harmonic optical frequency chains, the FLFC are fairly easy to operate, robust and reliable.…”

Section: Optical Frequency Metrologymentioning

confidence: 99%

Optical frequency/wavelength references

Hollberg¹,

Oates²,

Wilpers³

et al. 2005

J. Phys. B: At. Mol. Opt. Phys.

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For more than 100 years, optical atomic/molecular frequency references have played important roles in science and technology, and provide standards enabling precision measurements. Frequency-stable optical sources have been central to experimental tests of Einstein's relativity, and also serve to realize our base unit of length. The technology has evolved from atomic discharge lamps and interferometry, to narrow atomic resonances in laser-cooled atoms that are probed by frequency-stabilized cw lasers that in turn control optical frequency synthesizers (combs) based on ultra-fast mode-locked lasers. Recent technological advances have improved the performance of optical frequency references by almost four orders of magnitude in the last eight years. This has stimulated new enthusiasm for the development of optical atomic clocks, and allows new probes into nature, such as searches for time variation of fundamental constants and precision spectroscopy.

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Femtosecond Lasers for Optical Clocks and Low Noise Frequency Synthesis

Cited by 10 publications

References 108 publications

Radio frequency phototube and optical clock: High resolution, high rate and highly stable single photon timing technique

Radio frequency phototube and optical clock: High resolution, high rate and highly stable single photon timing technique

Ultra-low-noise microwave extraction from fiber-based optical frequency comb

Optical frequency/wavelength references

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