Laser frequency stabilization in sub-nanowatt level using nanofibers

Abstract

We introduce a novel scheme which combines conventional Doppler dichroic atomic vapor laser lock (DAVLL) and nanofiber techniques for realizing frequency stabilization with sub-nanowatt laser power. The dependences of DAVLL signal on the total incident power of probe light and the quantification magnetic field amplitude indicate that the power for frequency stabilization could be minimized to only 15 pW. To evaluate the frequency stability of the locked laser, we calculate the Allan standard deviation, which shows that the relative frequency stability could reach 10−10 level at 10 s. This frequency stabilization scheme paves the road for future quantum optical device integration.

Dark state atoms trapping in a magic-wavelength optical lattice near the nanofiber surface

“…In this respect, a tapered optical nanofiber provides an ideal platform. The strong confinement evanescent field near the nanofiber improves atom-light coupling and allows atomic trapping near the nanofiber surface [12][13][14] . In recent years, twocolor trappings including a state-insensitive nanofiber trap for atoms have been realized [15][16][17] .…”