Laboratory of Cold Atoms Near Surfaces

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Doctoral promotion of Dobrosława Bartoszek-Bober

Doctoral promotion of Dobrosława Bartoszek-Bober took place on the 3rd of March 2014 in Collegium Novum – the main building of the Jagiellonian University (foto by Krzysztof Magda).


Doctoral promotion of Dobrosławy Bartoszek-Bober

 

SciFun in our laboratory

SciFun visited our Faculty and our laboratory (several seconds starting from 1:15)

 

Ph.D. degree of Dobrosława Bartoszek-Bober

Congratulations to Dobrosława Bartoszek-Bober on receiving her Ph.D. degree!

DBB Ph.D. defense

5th of December 2013

 

Article in Optical Engineering

The article Construction and performance of an optical phase and frequency lock of diode lasers (T. Kawalec, D. Bartoszek-Bober) was published in Optical Engineering 52, 126105 (2013).

The technique of the laser frequency (phase) tunable stabilization is one of the main concernes in every atomic physics laboratory. Cheap and easy to use modern radio chips allow to construct simple and efficient optical phase locked loop (OPLLs). This manuscript deals with the OPLLs for external grating diode lasers used to stabilize their relative frequency to an external reference signal. In particular the following issues are discussed:

  1. the performance of the optical phase lock loop based on integrated PLL chips,
  2. the stable interference pattern between two different lasers, showing quantitatively the stability of the phase lock loop,
  3. an example of a very simple frequency lock realized with an all-in-one radio chip,
  4. practical tips facilitating the construction of the optical phase lock for atomic physics.

T. Kawalec, D. Bartoszek-Bober, “Construction and performance of an optical phase and frequency lock of diode lasers,” Optical Engineering, Ed. Ronald G. Driggers, 52(12), 126105, (2013)

article ::: DOI

Copyright 2013 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.

 

Article in Photonics Letters of Poland

The article titled Magnetic trapping on an atom chip (D. Bartoszek-Bober, R. Panaś, T. Kawalec) was published in Photonics Letters of Poland 5, 109 (2013). The article reviews briefly the rapidly evolving field of so-called atom chips for neutral atoms. Emphasis is placed on magnetic microtraps – on-chip Ioffe-Pritchard and dimple trap issue is covered in some detail. The experimental setup for cooling and trapping 87Rb atoms is also presented together with some early results of on-chip magnetic trapping.

 

Phases of Venus

Venus is an inferior planet from Earth. Depending on the relative positions of Earth and Venus, the observer on Earth sees the surface of the planet illuminated by the Sun to a variable extent. This phenomenon is called phases of Venus and is quite similar to the lunar phases. Here we present three pictures of Venus taken in December 2013. The camera was as usually amateur Lumix FZ45.

Phases of Venus

Left: stack of 15 pictures, exposure time 1/125 s, FNumber 5.2, ISO 400, optical zoom 24x, digital “zoom” 4x, tripod, 15:15 UTC.

Middle: stack of 12 pictures, exposure time 1/640 s, FNumber 5.2, ISO 100, optical zoom 24x, digital “zoom” 4x, tripod, 15:15 UTC.

Right: stack of 16 pictures, exposure time 1/1300 s, FNumber 5.2, ISO 100, optical zoom 24x, digital “zoom” 4x, no tripod, 14:30 UTC.

Pictures of Jupiter, Saturn, Moon, Sunspots and other objects are presented here.

Last Updated on Sunday, 05 January 2014 21:45
 


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