Abstract
We herein report a simultaneous frequency stabilization of two 780-nm external cavity diode lasers using a precision wavelength meter (WLM). The laser lock performance is characterized by the Allan deviation measurement in which we find at an averaging time of 1000 s. We also obtain spectral profiles through a heterodyne spectroscopy, identifying the contribution of white and flicker noises to the laser linewidth. The frequency drift of the WLM is measured to be about 2.0(4) MHz over 36 h. Utilizing the two lasers as a cooling and repumping field, we demonstrate a magneto-optical trap of Rb atoms near a high-finesse optical cavity. Our laser stabilization technique operates at broad wavelength range without a radio frequency element.
Highlights
Laser frequency stabilization is of fundamental importance in various areas of optical and physical sciences [1,2]
2 i =1 where i indicates the data index, yi is the recorded frequency in the wavelength meter (WLM), and N is the total number of data points
Similar feature is observed for external cavity diode lasers (ECDLs) 2 (Figure 2b)
Summary
In many instances of quantum optics and quantum information, it is indispensable to stabilize the laser frequency within a range narrower than a target atomic or cavity linewidth, in order to trap and cool atoms [4,5,6] and ions [7], or to probe cavity modes of a high-Q resonator [8,9]. To this end, a standard approach is to employ the well-known Pound–Drever–Hall (PDH) method [10]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
