Analysis and calibration of absorptive images of Bose-Einstein condensate at nonzero temperatures

Journal Article · Fri May 15 00:00:00 EDT 2009 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.3125051· OSTI ID:22053550

Szczepkowski, J ^[1]; Gartman, R; Zawada, M ^[2]; Witkowski, M ^[3]; Tracewski, L ^[4]; Gawlik, W ^[5]

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1. Institute of Physics, Pomeranian Academy, Arciszewskiego 22b, 76-200 Slupsk (Poland)
2. Institute of Physics, Nicolaus Copernicus University, GrudziaPdzka 5, 87-100 Torun (Poland)
3. Institute of Physics, University of Opole, Oleska 48, 45-052 Opole (Poland)
4. Institute of Experimental Physics, University of Wroclaw, Plac Maksa Borna 9, 50-204 Wroclaw (Poland)
5. Institute of Physics, Jagiellonian University, Reymonta 4, 30-059 Krakow (Poland)

We describe the method allowing quantitative interpretation of absorptive images of mixtures of Bose-Einstein condensate and thermal atoms which reduces possible systematic errors associated with evaluation of the contribution of each fraction and eliminates arbitrariness of most of the previous approaches. By using known temperature dependence of the BEC fraction, the analysis allows precise calibration of the fitting results. The developed method is verified in two different measurements and compares well with theoretical calculations and with measurements performed by another group.

• OSTI ID: 22053550
• Journal Information: Review of Scientific Instruments, Vol. 80, Issue 5; Other Information: (c) 2009 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ABSORPTION
ATOMS
BOSE-EINSTEIN CONDENSATION
CALIBRATION
COMPARATIVE EVALUATIONS
ERRORS
EXPERIMENTAL DATA
IMAGES
TEMPERATURE DEPENDENCE