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Functional connectome harmonics capture early brain organization and maturity in neonates

Rosberg A, Mariani Wigley I, Barron A, Suuronen I, Merisaari H, Pulli EP, Luotonen S, Li R, Bano W, Jolly A, Audah HK, Hashempour N, Vartiainen E, Karlsson H, Karlsson L, Bethlehem RA, Seidlitz J, Vohryzek J, Cabral J, Batalle D, Kringelbach ML, Atasoy S, Tuulari JJ.   +22 more
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Harmonic Mode Locking of Dual-Wavelength Mode-Locked All-Fiber Laser

Lecture Notes in Electrical Engineering, 2021
We report the experimental observation of harmonic mode locking of a dual-wavelength all-fiber laser with different repetition rates. Dual-wavelength mode locking with individual fundamental repetition rates could be generated in the laser. By adjusting the intracavity polarization controller, harmonic mode locking of both wavelengths can be generated,
Xiaosheng Xiao, Bo Cao
exaly   +2 more sources

AM and high-harmonic FM laser mode locking

Applied Optics, 1997
We demonstrate a new technique of active mode locking that combines amplitude-modulated (AM) mode locking at the cavity fundamental repetition rate with frequency-modulated (FM) mode locking at a high harmonic. This method combines the advantages of pulse shortening by high-harmonic mode locking while preserving the higher peak powers available at the ...
Corey V. Bennett, B H Kolner
exaly   +3 more sources

Harmonic mode locking of bound solitons

Optics Letters, 2015
We systematically investigate the passive harmonic mode locking (HML) of the bound states of two solitons in a fiber laser that has been mode locked by nonlinear polarization rotation (NPR). The experiment shows that the stable HML state of the bound solitons (BSs) with a fixed and discrete separation is obtained.
Zhiqiang, Wang, Li, Zhan, Asif, Majeed, Zhixin, Zou   +3 more
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Critical behavior of a passively mode-locked laser: rational harmonic mode locking

Optics Letters, 2007
The critical behavior of passive mode locking has been demonstrated in a figure-eight fiber laser that performs rational harmonic mode locking (RHML). On both the repetition rate and the pulse amplitude distribution, the observed pulse trains near the threshold exhibit the same regulations as the rational harmonic mode-locked ones.
Li, Zhan, Zhaochang, Gu, Jianwen, Zhang, Yuxing, Xia   +3 more
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AlGaInAs mode-locked lasers for ultrashort pulse harmonic mode locking

2011 13th International Conference on Transparent Optical Networks, 2011
Monolithic AlInGaAs compound-cavity lasers for harmonic ML at multi-GHz frequencies have been fabricated and assessed. Optical pulses of ∶ 1 ps long at 160 GHz have been obtained. The optimal cavity and reflector design has been investigated experimentally and theoretically.
Lianping Hou, Eugene A. Avrutin, Rafal Dylewicz, Mohsin Haji, Bocang Qiu, A. Catrina Bryce   +5 more
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Mechanism of harmonic mode locking of the regeneratively mode-locked laser diode

2004 IEEE 19th International Semiconductor Laser Conference, 2004. Conference Digest., 2005
It was found that the harmonic frequency optical injection locking of the regeneratively mode-locked laser diode occurs through the difference frequency component generation. Synchronization with up to 320-GHz input was also confirmed.
T. Ohno, T. Ito, K. Yoshino, H. Ito
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Harmonic mode-locking of asynchronous dual-wavelength pulses in mode-locked all-fiber lasers

Optics Communications, 2020
Abstract We report the observation of various harmonic mode-locking (HML) of a dual-wavelength all-fiber laser mode-locked with different repetition rates, and show the stability of the repetition rate difference. Interestingly, a state of second-order HML at both wavelengths is achieved.
Xiaosheng Xiao
exaly   +2 more sources