Laser frequency stabilization and large detuning by Doppler-free dichroic lock technique: Application to atom cooling

Pramana

H S Rawat¹  S C Mehendale¹  S P Ram¹  S R Mishra¹  V B Tiwari1¹  S Singh¹ 

[1] Laser Physics Division, Centre for Advanced Technology, Indore 452 013, India$$

关键词: Diode laser;    frequency stabilization;    laser atom cooling;    magneto-optic trap.;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

We present results of a study of frequency stabilization of a diode laser (𝜆 = 780 nm) using the Doppler-free dichroic lock (DFDL) technique and its use for laser cooling of atoms. Quantitative measurements of frequency stability were performed and the Allan variance was found to be 6.9 × 10−11 for an averaging time of 10 s. The frequency-stabilized diode laser was used to obtain the trapping beams for a magneto-optic trap (MOT) for Rb atoms. Using the DFDL technique, the laser frequency could be locked over a wide range and this enabled measurement of detuning dependence of the number and temperature of cold atoms using a relatively simple experimental set-up.

【 授权许可】

Unknown