Sub-Doppler cooling in grey molasses - second life for laser cooling techniques

Seminar
Speaker
Lev Khaykovich
Date
06/11/2013 - 14:00Add to Calendar 2013-11-06 14:00:00 2013-11-06 14:00:00 Sub-Doppler cooling in grey molasses - second life for laser cooling techniques In the early days of laser cooling of atomic gases, unexpectedly low temperatures were discovered in different laboratories across the world. A new cooling mechanism, called Sisyphus cooling, proposed by J. Dalibard and C. Cohen-Tannoudji, explained these findings and led later to Nobel Prize in physics awarded to C. Cohen-Tannoudji in 1997. Unfortunately, this elegant mechanism doesn’t apply for all atomic species used in ultracold atoms experiments. However, last year a beautiful extension of Sisyphus cooling has been realized exactly for those unfortunate species for which the usual mechanism fails to work. In my talk I will describe the mechanism, called “grey molasses”, and show the experimental results. 9th floor of the nanotechnology building המחלקה לפיזיקה physics.dept@mail.biu.ac.il Asia/Jerusalem public
Place
9th floor of the nanotechnology building
Abstract

In the early days of laser cooling of atomic gases, unexpectedly low temperatures were discovered in different laboratories across the world. A new cooling mechanism, called Sisyphus cooling, proposed by J. Dalibard and C. Cohen-Tannoudji, explained these findings and led later to Nobel Prize in physics awarded to C. Cohen-Tannoudji in 1997. Unfortunately, this elegant mechanism doesn’t apply for all atomic species used in ultracold atoms experiments. However, last year a beautiful extension of Sisyphus cooling has been realized exactly for those unfortunate species for which the usual mechanism fails to work. In my talk I will describe the mechanism, called “grey molasses”, and show the experimental results.

תאריך עדכון אחרון : 31/10/2013