1、LetterVol.49,No.21/1 November 2024/Optics Letters6013Three-dimensional,multi-wavelength beamformation with integrated metasurface opticsfor Sr laser coolingSindhu Jammi,1,2Andrew R.Ferdinand,1,2Zheng Luo,1,2Zachary L.Newman,3Grisha Spektor,1,2Junyeob Song,4Okan Koksal,4Akash V.Rakholia,5William Lund

2、en,5Daniel Sheredy,5Parth B.Patel,5Martin M.Boyd,5Wenqi Zhu,4Amit Agrawal,4Travis C.Briles,1ANDScott B.Papp1,2,1Time and Frequency Division,National Institute of Standards and Technology,Boulder,Colorado 80305,USA2Department of Physics,University of Colorado,Boulder,Colorado 80309,USA3Octave Photoni

3、cs,Louisville,Colorado 80027,USA4Microsystems and Nanotechnology Division,National Institute of Standards and Technology,Gaithersburg,Maryland 20899,USA5Vector Atomic,Inc.,Pleasanton,California 94588,USA*scott.pappnist.govReceived 8 May 2024;revised 9 August 2024;accepted 16 September 2024;posted 17

4、 September 2024;published 17 October 2024We demonstrate the formation of a complex,multi-wavelength,three-dimensional laser beam configurationwith integrated metasurface(MS)optics.Our experimentssupport the development of a compact Sr optical-latticeclock,which leverages magneto-optical trapping at

5、461 nmand 689 nm without bulk free-space optics.We integratesix mm-scale metasurfaces on a fused silica substrate andilluminate them with light from optical fibers.The metasur-faces provide full control of beam pointing,divergence,andpolarization to create the laser configuration for a magneto-optic

6、al trap.We report the efficiency and integration of thevisiblelaserbeamconfiguration,demonstratingthesuitabil-ity of metasurface optics for atomic laser cooling.2024Optica Publishing Group.All rights,including for text and data mining(TDM),Artificial Intelligence(AI)training,and similar technologies