VCSEL polarization control for chip-scale atomic clocks.

Geib, Kent Martin ; Peake, Gregory Merwin ; Wendt, Joel Robert ; Serkland, Darwin Keith ; Keeler, Gordon Arthur

关键词: ATOMIC CLOCKS;    DESIGN;    FABRICATION;    SEMICONDUCTOR LASERS;    POLARIZATION;    PROCESS CONTROL;    MATHEMATICAL MODELS Vertical cavity surface-emitting lasers;    Atomic clocks.;    Polarization (Light)-Analysis.;   

DOI  :  10.2172/902214
RP-ID  :  SAND2007-0069
PID  :  OSTI ID: 902214
Others  :  TRN: US200717%%428

学科分类：工程和技术（综合）

美国|英语

来源: SciTech Connect

【 摘 要 】

Sandia National Laboratories and Mytek, LLC have collaborated to develop a monolithically-integrated vertical-cavity surface-emitting laser (VCSEL) assembly with controllable polarization states suitable for use in chip-scale atomic clocks. During the course of this work, a robust technique to provide polarization control was modeled and demonstrated. The technique uses deeply-etched surface gratings oriented at several different rotational angles to provide VCSEL polarization stability. A rigorous coupled-wave analysis (RCWA) model was used to optimize the design for high polarization selectivity and fabrication tolerance. The new approach to VCSEL polarization control may be useful in a number of defense and commercial applications, including chip-scale atomic clocks and other low-power atomic sensors.