Dispersion method of atmospheric distortion compensation of optical fields

1994 ◽  
Author(s):  
Aleksandr N. Sergushichev ◽  
Vadim V. Rud
Keyword(s):  
Dispersion Method ◽  
Optical Fields ◽  
Distortion Compensation ◽  
Atmospheric Distortion

Nonlinear phase-conjugate mirrors for atmospheric distortion compensation

1999 ◽  
Author(s):  
Nikolay A. Romanov ◽  
Aleksey A. Leshchev ◽  
Andrey Y. Rodionov ◽  
Victor E. Semenov ◽  
Vladimir E. Sherstobitov ◽  
...  
Keyword(s):  
Phase Conjugate ◽  
Distortion Compensation ◽  
Nonlinear Phase ◽  
Atmospheric Distortion

1-bit Feedforward Distortion Compensation Technology for Bandpass Delta-Sigma Modulation

2016 ◽  
Vol E99.B (5) ◽  
pp. 1087-1092 ◽  
Author(s):  
Takashi MAEHATA ◽  
Suguru KAMEDA ◽  
Noriharu SUEMATSU
Keyword(s):  
Distortion Compensation ◽  
Delta Sigma ◽  
Delta Sigma Modulation

scholarly journals Time Decay for Nonlinear Dissipative Schrödinger Equations in Optical Fields

2016 ◽  
Vol 2016 ◽  
pp. 1-7 ◽  
Author(s):  
Nakao Hayashi ◽  
Chunhua Li ◽  
Pavel I. Naumkin
Keyword(s):  
Lower Bound ◽  
Positive Root ◽  
Schrodinger Equations ◽  
Schrödinger Equations ◽  
Time Decay ◽  
Large Initial Data ◽  
Initial Value ◽  
Optical Fields ◽  
Gauge Invariant ◽  
Dissipative Condition

We consider the initial value problem for the nonlinear dissipative Schrödinger equations with a gauge invariant nonlinearityλup-1uof orderpn<p≤1+2/nfor arbitrarily large initial data, where the lower boundpnis a positive root ofn+2p2-6p-n=0forn≥2andp1=1+2forn=1.Our purpose is to extend the previous results for higher space dimensions concerningL2-time decay and to improve the lower bound ofpunder the same dissipative condition onλ∈C:Im⁡ λ<0andIm⁡ λ>p-1/2pRe λas in the previous works.

Single Molecules in Strong Optical Fields: A Variable-Temperature Molecular Junction Spectroscopy Setup

2021 ◽  
Author(s):  
Hai Bi ◽  
Chao Jing ◽  
Peter Hasch ◽  
Yuxiang Gong ◽  
Daniel Gerster ◽  
...  
Keyword(s):  
Variable Temperature ◽  
Single Molecules ◽  
Molecular Junction ◽  
Optical Fields

scholarly journals Microwave oscillator and frequency comb in a silicon optomechanical cavity with a full phononic bandgap

Nanophotonics ◽  
2020 ◽  
Vol 9 (11) ◽  
pp. 3535-3544 ◽  
Author(s):  
Laura Mercadé ◽  
Leopoldo L. Martín ◽  
Amadeu Griol ◽  
Daniel Navarro-Urrios ◽  
Alejandro Martínez
Keyword(s):  
Phase Noise ◽  
Frequency Comb ◽  
Microwave Oscillator ◽  
New Paradigm ◽  
Mechanical Motion ◽  
Optical Fields ◽  
Optical Resonance ◽  
Processing Elements ◽  
Low Weight ◽  
Harmonic Mixing

AbstractCavity optomechanics has recently emerged as a new paradigm enabling the manipulation of mechanical motion via optical fields tightly confined in deformable cavities. When driving an optomechanical (OM) crystal cavity with a laser blue-detuned with respect to the optical resonance, the mechanical motion is amplified, ultimately resulting in phonon lasing at MHz and even GHz frequencies. In this work, we show that a silicon OM crystal cavity performs as an OM microwave oscillator when pumped above the threshold for self-sustained OM oscillations. To this end, we use an OM cavity designed to have a breathing-like mechanical mode at 3.897 GHz in a full phononic bandgap. Our measurements show that the first harmonic of the detected signal displays a phase noise of ≈−100 dBc/Hz at 100 kHz. Stronger blue-detuned driving leads eventually to the formation of an OM frequency comb, whose lines are spaced by the mechanical frequency. We also measure the phase noise for higher-order harmonics and show that, unlike in Brillouin oscillators, the noise is increased as corresponding to classical harmonic mixing. Finally, we present real-time measurements of the comb waveform and show that it can be fitted to a theoretical model recently presented. Our results suggest that silicon OM cavities could be relevant processing elements in microwave photonics and optical RF processing, in particular in disciplines requiring low weight, compactness and fiber interconnection.

scholarly journals An improved distortion compensation approach for additive manufacturing using optically scanned data

2021 ◽  
Vol 16 (1) ◽  
pp. 1-13
Author(s):  
Shukri Afazov ◽  
Eleonora Semerdzhieva ◽  
Daniele Scrimieri ◽  
Ahmad Serjouei ◽  
Bekmurat Kairoshev ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
Distortion Compensation ◽  
Compensation Approach

Distortion Compensation Method on SC-FDE Modulation using for 42-GHz band UHDTV Wireless Camera

2021 ◽  
Author(s):  
Fumiya Yamagishi ◽  
Yoshifumi Matsusaki ◽  
Tomohiro Shimazaki ◽  
Takayuki Nakagawa ◽  
Naohiko Iai
Keyword(s):  
Compensation Method ◽  
Distortion Compensation
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