Results 21 to 30 of about 6,131,979 (297)

Robust optical injection locking to a 250 MHz frequency comb without narrow-band optical pre-filtering [PDF]

open access: yes, 2011
A semiconductor laser was injection locked to a single optical frequency comb mode with a dither-free phase locked loop.
Wu, D.S.   +3 more
core   +2 more sources

Femtosecond Optical Frequency Combs [PDF]

open access: yesThe European Physical Journal Special Topics, 2009
A laser frequency comb allows the conversion of the very rapid oscillations of visible light of some 100’s of THz down to frequencies that can be handled with conventional electronics. This capability has enabled the most precise laser spectroscopy experiments yet that allowed to test quantum electrodynamics, to determine fundamental constants and to ...
Udem, T., Holzwarth, R., Hänsch, T.
openaire   +2 more sources

Optical Frequency Comb Photoacoustic Spectroscopy [PDF]

open access: yes2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC), 2018
Optical frequency comb photoacoustic spectroscopy (OFC-PAS) is demonstrated for the first time for broadband high-resolution trace gas analysis in small sample volumes.
Ibrahim Sadiek   +4 more
openaire   +8 more sources

Theory of quadratic optical frequency combs [PDF]

open access: yes2016 18th International Conference on Transparent Optical Networks (ICTON), 2016
We present theoretical studies of optical frequency comb generation in dispersive quadratically nonlinear resonators. We introduce a mean field equation approach to model cavity enhanced second harmonic generation and find excellent agreement with recent experimental frequency comb observations. We also develop a more general approach based on a single
Tobias Hansson   +6 more
openaire   +6 more sources

A novel continuously variable angular vertical comb-drive with application in scanning micromirror [PDF]

open access: yes, 2013
An angular vertical comb-drive (AVC) with electrically controllable initial comb-offset is presented in the context of a single crystalline silicon scanning micromirror.
Lì, Lì L.   +3 more
core   +4 more sources

Optical pump assisted broadband terahertz frequency comb

open access: yesAIP Advances, 2021
A broadband terahertz (THz) frequency comb assisted by an optical pump in THz quantum cascade lasers (QCLs) is investigated theoretically and numerically through a Maxwell–Bloch model combined with the coupled wave theory.
Kai Wang   +5 more
doaj   +1 more source

Recent advances in ultrafast optical parametric oscillator frequency combs [PDF]

open access: yes, 2014
We discuss recent advances in the stabilization and application of femtosecond frequency combs based on optical parametric oscillators (OPOs) pumped by femtosecond lasers at 800 and 1060 nm.
Reid, Derryck T.; id_orcid   +2 more
core   +1 more source

The Optimization of Cold Rubidium Atom Two-Photon Transition Excitation with an Erbium-Fiber Optical Frequency Comb

open access: yesApplied Sciences, 2019
We demonstrated the observation of cold rubidium atom two-photon transition excitation by a fiber optical frequency comb. In addition to this, we optimized the repetition rate of optical frequency comb to enhance two-photon intensity by controlling ...
Haoyuan Lu, Jianxiao Leng, Jianye Zhao
doaj   +1 more source

Simple method for mid-infrared optical frequency comb generation with dynamic offset frequency tuning

open access: yesAPL Photonics, 2021
We present a simple method for fully stabilized mid-infrared optical frequency comb generation based on single-pass femtosecond optical parametric generation that is seeded by a continuous-wave laser.
Mikhail Roiz   +3 more
doaj   +1 more source

Hook-and-Loop laser fastening of an optical frequency comb to a strongly driven two-level quantum system

open access: yesResults in Physics, 2022
In order to control the state of a two-level quantum system (e.g. the spin state of an ion qubit), optical frequency combs perform a two-photon stimulated Raman process through stimulated absorption from one comb tooth and stimulated emission into ...
Gilbert Reinisch
doaj   +1 more source

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