IEEE Photonics Technology Letters
Coherent Dual-Frequency Emission of a Vertical External-Cavity Semiconductor Laser at the Cesium ${\rm D}_{2}$ Line
Fabiola A. Camargo, Jessica Barrientos, Ghaya Baili, Loïc Morvan, Daniel Dolfi, David Holleville, Stéphane Guérandel, Isabelle Sagnes, Patrick Georges, Gaëlle Lucas-Leclin