scholarly journals Antireflection coated semiconductor laser amplifier for Bose-Einstein condensation experiments

AIP Advances ◽  
2018 ◽  
Vol 8 (9) ◽  
pp. 095020
Author(s):  
Saurabh Pandey ◽  
Hector Mas ◽  
Giannis Drougakis ◽  
Kostas G. Mavrakis ◽  
Mikis Mylonakis ◽  
...  
Keyword(s):  
Semiconductor Laser ◽  
Einstein Condensation ◽  
Laser Amplifier ◽  
Bose Einstein Condensation ◽  
Bose Einstein ◽  
Semiconductor Laser Amplifier

Systems with Condensates and Pairing

2018 ◽  
Author(s):  
Klaus Morawetz
Keyword(s):  
Critical Parameters ◽  
Einstein Condensation ◽  
Cooper Pairs ◽  
Pair Breaking ◽  
Systematic Theory ◽  
Bose Einstein Condensation ◽  
T Matrix ◽  
The Stability ◽  
Bose Einstein

The Bose–Einstein condensation and appearance of superfluidity and superconductivity are introduced from basic phenomena. A systematic theory based on the asymmetric expansion of chapter 11 is shown to correct the T-matrix from unphysical multiple-scattering events. The resulting generalised Soven scheme provides the Beliaev equations for Boson’s and the Nambu–Gorkov equations for fermions without the usage of anomalous and non-conserving propagators. This systematic theory allows calculating the fluctuations above and below the critical parameters. Gap equations and Bogoliubov–DeGennes equations are derived from this theory. Interacting Bose systems with finite temperatures are discussed with successively better approximations ranging from Bogoliubov and Popov up to corrected T-matrices. For superconductivity, the asymmetric theory leading to the corrected T-matrix allows for establishing the stability of the condensate and decides correctly about the pair-breaking mechanisms in contrast to conventional approaches. The relation between the correlated density from nonlocal kinetic theory and the density of Cooper pairs is shown.

Polarisation insensitive, 25 dB gain semiconductor laser amplifier without antireflection coatings

1996 ◽  
Vol 32 (19) ◽  
pp. 1835 ◽  
Author(s):  
A.E. Kelly ◽  
I.F. Lealman ◽  
L.J. Rivers ◽  
S.D. Perrin ◽  
M. Silver
Keyword(s):  
Semiconductor Laser ◽  
Antireflection Coatings ◽  
Laser Amplifier ◽  
Semiconductor Laser Amplifier

scholarly journals Bose Einstein condensation in a magnetic double-well potential

2003 ◽  
Vol 5 (2) ◽  
pp. S119-S123 ◽  
Author(s):  
T G Tiecke ◽  
M Kemmann ◽  
Ch Buggle ◽  
I Shvarchuck ◽  
W von Klitzing ◽  
...  
Keyword(s):  
Einstein Condensation ◽  
Bose Einstein Condensation ◽  
Bose Einstein ◽  
Double Well Potential

Bose-Einstein condensation of large numbers of atoms in a magnetic time-averaged orbiting potential trap

1998 ◽  
Vol 57 (6) ◽  
pp. R4114-R4117 ◽  
Author(s):  
D. J. Han ◽  
R. H. Wynar ◽  
Ph. Courteille ◽  
D. J. Heinzen
Keyword(s):  
Einstein Condensation ◽  
Bose Einstein Condensation ◽  
Large Numbers ◽  
Potential Trap ◽  
Bose Einstein
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