Results 181 to 190 of about 51,588 (218)

Demonstration of a tunable non-Hermitian nonlinear microwave dimer. [PDF]

open access: yesNat Commun
Salcedo-Gallo JS   +8 more
europepmc   +1 more source

Pseudo mode-locking

Conference on Lasers and Electro-Optics, 2020
A new mode-locking mechanism is discussed that solely relies on four-wave mixing and does not require a saturable absorber. This mechanism explains a number of previously reported peculiar findings of self-modelocking and comb formation.
Günter Steinmeyer   +3 more
openaire   +2 more sources

Mode locking in tokamaks [PDF]

open access: possibleNuclear Fusion, 1990
The theory of non-linear tearing modes has been extended to include the effects of rotation and interaction with a resistive wall. The time dependent solution of the resulting equations shows a spatial locking of the mode similar to that observed in tokamak experiments.
J.A. Wesson, M. F. F. Nave
openaire   +1 more source

Noise of mode-locked lasers

IEEE Journal of Quantum Electronics, 1993
A theory of noise in mode-locked lasers is developed that applies to additive pulse mode-locked and Kerr lens mode-locked systems. Equations of motion are derived for pulse energy, carrier linewidth, frequency pulling, and timing jitter. The effect of gain fluctuations, mirror vibrations, and index fluctuations are determined.
HAUS H. A., MECOZZI, ANTONIO
openaire   +3 more sources

Mode-locked lasers

Optical Engineering, 1992
A review of various types of active and passive mode-locked lasers is presented. Theoretical and experimental aspects of mode locking are covered. Stabilization schemes used in mode-locked laser systems are described. Techniques used in the measurement of the time duration of the ultrashort pulses and the uses of high-power, low-power, and picosecond ...
U. C. Joshi   +2 more
openaire   +2 more sources

Mode locking in quasicrystals

Physical Review B, 1989
Possible modulated structures of icosahedral quasicrystals are investigated. The modulated phases are regarded as lower symmetric phases where the global icosahedral symmetry of quasicrystals is broken due to mode locking of phason degrees of freedom. With the help of group theory, nonvanishing phason fields are calculated for all the possible symmetry
openaire   +3 more sources

Mode-Locked Superfluorescence [PDF]

open access: possible, 1989
We report on the theory and experimental verification of a new type of laser. Traditional lasers are operated in a region where the output bandwidth is of the order of the small-signal gain bandwidth. Instead, we report on mode-locked laser operation with a bandwidth that is much larger than the small-signal gain bandwidth.
Rainer Leonhardt   +4 more
openaire   +1 more source

Spatiotemporal Mode-Locking

Conference on Lasers and Electro-Optics, 2018
We describe, through multiple theoretical and experimental realizations, spatiotemporal mode-locking (STML), the most general form of self-organization in optical oscillators. We discuss qualitatively new kinds of mode-locking, and routes to ultrahigh power, compact lasers.
Wright, Logan G.   +2 more
openaire   +3 more sources

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