Observation of Anomalous Dispersion of Adsorbed Films by Ellipsometry

1956 ◽  
Vol 24 (5) ◽  
pp. 1108-1108 ◽  
Author(s):  
L. S. Bartell
Keyword(s):  
Anomalous Dispersion ◽  
Adsorbed Films

Linewidth and anomalous dispersion of ultrasound in glasses

1977 ◽  
Vol 38 (1) ◽  
pp. 69-78 ◽  
Author(s):  
A. Bachellerie ◽  
P. Doussineau ◽  
A. Levelut ◽  
T.-T. Ta
Keyword(s):  
Anomalous Dispersion

Resonant Supercontinuum Generation in Normal and Anomalous Dispersion

2020 ◽  
Author(s):  
M. H. Anderson ◽  
R. Bouchand ◽  
J. Liu ◽  
G. Lihachev ◽  
W. Weng ◽  
...  
Keyword(s):  
Supercontinuum Generation ◽  
Anomalous Dispersion

scholarly journals Supercontinuum generation in photonic crystal fibers infiltrated with tetrachloroethylene

2021 ◽  
Vol 53 (4) ◽  
Author(s):  
Hieu Van Le ◽  
Van Thuy Hoang ◽  
Hue Thi Nguyen ◽  
Van Cao Long ◽  
Ryszard Buczynski ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Lattice Constant ◽  
Wavelength Range ◽  
Pump Pulse ◽  
Filling Factor ◽  
Photonic Crystal Fibers ◽  
Fused Silica ◽  
Anomalous Dispersion ◽  
Central Wavelength ◽  
Crystal Fibers

AbstractThis study proposes a photonic crystal fiber made of fused silica glass, with the core infiltrated with tetrachloroethylene (C2Cl4) as a new source of supercontinuum (SC) spectrum. We studied numerically the guiding properties of the several different fiber structures in terms of characteristic dispersion, mode area, and attenuation of the fundamental mode. Based on the results, the structural geometries of three C2Cl4-core photonic crystal fibers were optimized in order to support the broadband SC generations. The first fiber structure with lattice constant 1.5 μm and filling factor 0.4 operates in all-normal dispersion. The SC with a broadened spectral bandwidth of 0.8–2 μm is generated by a pump pulse with a central wavelength of 1.56 μm, 90 fs duration and energy of 1.5 nJ. The second proposed structure, with lattice constant 4.0 μm and filling factor 0.45, performs an anomalous dispersion for wavelengths longer than 1.55 μm. With the same pump pulse as the first fiber, we obtained the coherence SC spectrum in an anomalous dispersion range with wavelength range from 1 to 2 μm. Meanwhile, the third selected fiber (lattice constant 1.5 μm, filling factor 0.55) has two zero dispersion wavelengths at 1.04 μm and 1.82 μm. The octave-spanning of the SC spectrum formed in this fiber was achieved in the wavelength range of 0.7–2.4 μm with an input pulse whose optical properties are 1.03 μm wavelength, 120 fs duration and energy of 2 nJ. Those fibers would be good candidates for all-fiber SC sources as cost-effective alternatives to glass core fibers.

Anomalous dispersion, differential gain, and dispersion of the α-factor in InGaAs/AlGaAs/GaAs strained quantum-well semiconductor lasers

2000 ◽  
Vol 34 (10) ◽  
pp. 1207-1213 ◽  
Author(s):  
A. P. Bogatov ◽  
A. E. Boltaseva ◽  
A. E. Drakin ◽  
M. A. Belkin ◽  
V. P. Konyaev
Keyword(s):  
Quantum Well ◽  
Semiconductor Lasers ◽  
Anomalous Dispersion ◽  
Differential Gain ◽  
Strained Quantum Well
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