Time-dependent population inversion gratings in laser frequency combs
نویسندگان
چکیده
منابع مشابه
Terahertz laser frequency combs
The development of optical frequency combs has had a revolutionary impact on high-precision metrology and spectroscopy, and the development was recognized with a Nobel Prize in 2005. At visible and near-infrared frequencies, the combs are often formed based on mode-locked lasers whose periodic pulse trains in the time domain naturally lead to frequency combs from the duality relation in Fourier...
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A direct measurement of the universe's expansion history could be made by observing in real time the evolution of the cosmological redshift of distant objects. However, this would require measurements of Doppler velocity drifts of approximately 1 centimeter per second per year, and astronomical spectrographs have not yet been calibrated to this tolerance. We demonstrated the first use of a lase...
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YANG YANG,* DAVID BURGHOFF, DARREN J. HAYTON, JIAN-RONG GAO, JOHN L. RENO, AND QING HU Department of Electrical Engineering and Computer Science, Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA SRON Netherlands Institute for Space Research, 9747 AD, Groningen, The Netherlands Kavli Institute of NanoScience, Delft University of Techn...
متن کاملFiber-laser frequency combs with subhertz relative linewidths.
We investigate the comb linewidths of self-referenced, fiber-laser-based frequency combs by measuring the heterodyne beat signal between two independent frequency combs that are phase locked to a common cw optical reference. We demonstrate that the optical comb lines can exhibit instrument-limited, subhertz relative linewidths across the comb spectra from 1200 to 1720 nm with a residual integra...
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We demonstrate that femtosecond laser frequency combs (FLFCs) can have a subhertz linewidth across their entire emission spectra when they are phase locked to a reference laser with a similarly narrow linewidth. Correspondingly, the coherence time of the comb components relative to the reference laser can be of the order of a few seconds. Thus we are able to detect high-contrast spectral interf...
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ژورنال
عنوان ژورنال: Optica
سال: 2018
ISSN: 2334-2536
DOI: 10.1364/optica.5.000475