Results 261 to 270 of about 10,650 (297)

Electro-optic frequency combs

Advances in Optics and Photonics, 2020
Frequency combs are optical spectra composed of a set of discrete equally spaced lines. Such spectra can be generated by diverse sources such as mode-locked lasers, resonators, or electro-optic modulators. This last possibility has shown a growing interest in the recent years for its advantageous features in providing high repetition rates, intrinsic ...
Parriaux, Alexandre, Hammani, Kamal, Millot, Guy   +2 more
openaire   +2 more sources

Characterization of the Frequency Stability of a Multibranch Optical Frequency Comb

IEEE Transactions on Instrumentation and Measurement, 2020
Presently, ultra-precise optical clocks’ comparisons can be performed easily using the optical frequency combs (OFCs) as a transfer oscillator. In this scheme, different OFC branches are usually used to enable optical clocks’ comparison at different wavelengths.
openaire   +1 more source

Optical frequency comb at NIM

Digest of the LEOS Summer Topical Meetings, 2005., 2005
Absolute measurement of stabilized lasers' optical frequency is an important subject in metrology. The traditional tool for establishing the llnk between Cs atomic frequency standard and an optical frequency is harmonic frequency chain ['I. But, such a harmonic frequency chain is very expensive to built and complicated to operate.
Z. Fang, T. Li
openaire   +1 more source

Accuracy of optical frequency comb generation in optical fiber

Optics Letters, 1999
We evaluated the accuracy of an optical frequency comb in optical fibers by measuring the frequency shift after a sideband from an electro-optic modulator had passed through the fiber. We found that a frequency drift of a few hertz was due largely to a variation in the ambient temperature that corresponded to an increase in the square root of the Allan
K, Imai, Y, Zhao, M, Kourogi, B, Widiyatmoko, M, Ohtsu   +4 more
openaire   +2 more sources

Applications of stabilized optical frequency combs

2013 American Control Conference, 2013
This paper will discuss optical frequency combs, techniques used for the stabilization of frequency combs and their applications.
openaire   +1 more source

Optical resonators for frequency combs

2006 Conference on Lasers and Electro-Optics and 2006 Quantum Electronics and Laser Science Conference, 2006
The development of high finesse resonators for broadband frequency combs enabled the extension of the versatile frequency comb technique into the extreme ultraviolet with all its implications. We describe new developments in this field.
Christoph Gohle, Maximilian Herrmann, Albert Schliesser, Alma Fernandez, Jens Rauschenberger, Bjorn Stein, Ronald Holzwarth, Thomas Udem, Theodor W. Hansch   +8 more
openaire   +1 more source

Characterization of an optical frequency comb using modified direct frequency comb spectroscopy

Applied Physics B, 2009
We introduce a method for determination of the absolute frequencies of comb lines within the optical frequency comb spectrum. The method utilizes the experimental and theoretical approach of the velocity selective optical pumping of the atomic ground state hyperfne levels induced by resonant pulse train excitation.
Skenderović, Hrvoje, Aumiler, Damir, Vdović, Silvije, Pichler, Goran, Vujičić, Nataša, Ban, Ticijana   +5 more
openaire   +2 more sources

Optical frequency metrology with optical lattice clocks and optical frequency combs

2012 Conference on Precision electromagnetic Measurements, 2012
Laser frequency stabilization and atom manipulation are important techniques for optical frequency metrology. We report on the development of an ytterbium (171Yb) and a strontium (87Sr) optical lattice clock at the National Metrology Institute of Japan (NMIJ). The result of absolute frequency measurement of the 171Yb lattice clock is shown.
Feng-Lei Hong, Masami Yasuda, Daisuke Akamatsu, Takuya Kohno, Kazumoto Hosaka, Hajime Inaba, Yoshiaki Nakajima, Atsushi Onae   +7 more
openaire   +1 more source

Arbitrary optical frequency synthesis traced to an optical frequency comb

SPIE Proceedings, 2016
An arbitrary optical frequency synthesizer with a broad tuning range and high frequency accuracy is presented. The system includes an external cavity diode laser (ECDL) as the output laser, an Erbium-doped optical frequency comb being a frequency reference, and a control module.
Zihang Cai, Weipeng Zhang, Honglei Yang, Yan Li, Haoyun Wei   +4 more
openaire   +1 more source

Comb Line Multiplication in an Integrated Optical Frequency Comb Generator

2019 24th OptoElectronics and Communications Conference (OECC) and 2019 International Conference on Photonics in Switching and Computing (PSC), 2019
We demonstrate frequency-comb tone multiplication in an InP photonic integrated comb generator made of cascaded modulators. Tone multiplication is achieved driving the dual-drive MZM on the chip with an RF signal and one submultiple.
Francesca Bontempi, Nicola Andriolli, Filippo Scotti, Marco Chiesa, Giampiero Contestabile   +4 more
openaire   +1 more source