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year 27, Issue 2 (ICOP & ICPET 2021 2021)
ICOP & ICPET _ INPC _ ICOFS 2021, 27(2): 486-489 |
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Yousefi M, Akbari M, Shahidani S, Salehi Nezam Abadi J, Sobhkhiz Vayghan N. Effect of stochastic laser phase and amplitude fluctuations on Doppler cooling of strontium atom. ICOP & ICPET _ INPC _ ICOFS 2021; 27 (2) :486-489
URL: http://opsi.ir/article-1-2409-en.html
URL: http://opsi.ir/article-1-2409-en.html
Masoud Yousefi *1 
, Mohsen Akbari1 , Sareh Shahidani1 , Javad Salehi Nezam Abadi1 , Nader Sobhkhiz Vayghan1
, Mohsen Akbari1 , Sareh Shahidani1 , Javad Salehi Nezam Abadi1 , Nader Sobhkhiz Vayghan1
1- Atom Optics Group, Iranian Center for Quantum Technologies (ICQTs), Tehran, Iran
Abstract: (860 Views)
In this paper, the effects of stochastic laser phase and amplitude fluctuations on the Doppler cooling and trapping of strontium atom are theoretically investigated by detail. relevant physical quantities in the laser cooling, such as radiative pressure force, damping coefficient and minimum achievable temperature are analytically explored with respect to both amplitude and frequency fluctuations of the laser. The results show that, with increasing of the stochastic fluctuations, the magnitude of the radiative force, thus the maximum amount of damping coefficient and consequently the cooling efficiency will decrease so that the effect of amplitude fluctuations is stronger than the laser linewidth variations. Furthermore, temperature deviate severely from Doppler theory predictions, implying that these fluctuations are significant additional heating mechanisms.
Keywords: Doppler laser cooling, radiative pressure force, strontium atom, laser phase and amplitude fluctuations
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