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24 February 2020 894nm high orthogonal polarization suppression ratio vertical cavity surface emitting laser
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Abstract
Vertical-cavity surface-emitting lasers (VCSELs) with single-mode, single-polarization emission at a wavelength of 894.6 nm was demonstrated for miniaturized atomic clocks. Utilizing the direct-etched surface grating on the surface of VCSELs, the state of polarization of VCSELs was controlled and pinned over the whole current range. The Modal properties of VCSELs with grating structures was studied using a finite difference time domain (FDTD) method. We investigate modal loss behavior with respect to the variation of grating structural parameters for the optimization of VCSELs polarization characteristics.
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Ming Li, Qiuhua Wang, Pingping Qiu, Yiyang Xie, and Qiang Kan "894nm high orthogonal polarization suppression ratio vertical cavity surface emitting laser", Proc. SPIE 11300, Vertical-Cavity Surface-Emitting Lasers XXIV, 113000W (24 February 2020); https://doi.org/10.1117/12.2544281
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