Deep laser cooling of strontium atoms on 1 S 0 → 3 P 0 transition

نویسندگان

  • R Ya Ilenkov
  • A V Taichenachev
  • V I Yudin
  • O N Prudnikov
چکیده

Momentum distributions of strontium atoms are characterized by means of bimodal functional dependences, which properties depend on the laser field parameters. It is shown that ultracold fraction of atoms (T ≤ ħ/kB) can reach 60 %. The calculations are based on the quantum treatment of the problem with taking into account the recoil effect in full. The results can be used for ultradeep laser cooling of strontium atoms.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Laser cooling to quantum degeneracy.

We report on Bose-Einstein condensation in a gas of strontium atoms, using laser cooling as the only cooling mechanism. The condensate is formed within a sample that is continuously Doppler cooled to below 1  μK on a narrow-linewidth transition. The critical phase-space density for condensation is reached in a central region of the sample, in which atoms are rendered transparent for laser cooli...

متن کامل

Optical Clocks Based on Ultracold Neutral Strontium Atoms

Ultra-cold alkaline earth atoms show great promise as future optical frequency standards and as key components in optical atomic clocks. Atomic strontium is an exciting candidate for a future standard as the level structure provides multiple narrow clock transitions as well as means for efficient laser cooling to μK temperatures. A variety of measurement techniques are currently being explored ...

متن کامل

Deep sub-Doppler cooling of Mg in MOT formed by light waves with elliptical polarization

We study magneto-optical trap (MOT) of Mg atoms operating on the closed triplet P2→D3 ( = 383.3 nm) transition formed by the light waves with elliptical polarization (      configuration). Compare to well-known trap formed by light waves with circular polarization (+–– configuration) the suggested      configuration offer the lower subDoppler temperature for trapped Mg atoms, that ...

متن کامل

Laser sources for precision spectroscopy on atomic strontium.

We present a new laser setup designed for high-precision spectroscopy on laser cooled atomic strontium. The system, which is entirely based on semiconductor laser sources, delivers 200 mW at 461 nm for cooling and trapping atomic strontium from a thermal source, 4 mW at 497 nm for optical pumping from the metastable P23 state, 12 mW at 689 nm on linewidth less than 1 kHz for second-stage coolin...

متن کامل

Sisyphus Laser Cooling of a Polyatomic Molecule.

We perform magnetically assisted Sisyphus laser cooling of the triatomic free radical strontium monohydroxide (SrOH). This is achieved with principal optical cycling in the rotationally closed P(N^{''}=1) branch of either the X[over ˜]^{2}Σ^{+}(000)↔A[over ˜]^{2}Π_{1/2}(000) or the X[over ˜]^{2}Σ^{+}(000)↔B[over ˜]^{2}Σ^{+}(000) vibronic transitions. Molecules lost into the excited vibrational ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2016