Electrically-injected vertical-cavity surface-emitting lasers with post-supported high-contrast gratings

Jing Zhang; Chenxi Hao; Dieter Bimberg; Anjin Liu

doi:10.1117/12.2623587

9 March 2022 Electrically-injected vertical-cavity surface-emitting lasers with post-supported high-contrast gratings

Jing Zhang, Chenxi Hao, Dieter Bimberg, Anjin Liu

Author Affiliations +

Proceedings Volume PC12020, Vertical-Cavity Surface-Emitting Lasers XXVI; PC1202005 (2022) https://doi.org/10.1117/12.2623587
Event: SPIE OPTO, 2022, San Francisco, California, United States

Abstract

We experimentally demonstrate for the first time electrically-injected Vertical-Cavity Surface-Emitting Lasers (VCSELs) with post-supported high-contrast gratings (HCGs) at 940 nm. The HCG-VCSELs have two posts to support the air-suspended HCGs, being realized by simple fabrication without critical point drying. The HCGs can be released with a 100% yield in water or isopropanol. The HCG-VCSEL with a 4 μm × 8 μm oxide aperture achieves a low threshold current of 0.65 mA and a large side-mode suppression ratio of 43.6 dB under continuous-wave operation at 25 degrees. Theoretically, the relaxation resonance frequency of the HCG-VCSEL will increase by 16% compared with that of the conventional VCSEL with a λ/2 cavity. The data rate of 100 Gbps in the on-off keying modulation format for the HCG-VCSEL is expected.

Conference Presentation

Citation Download Citation

Jing Zhang, Chenxi Hao, Dieter Bimberg, and Anjin Liu "Electrically-injected vertical-cavity surface-emitting lasers with post-supported high-contrast gratings", Proc. SPIE PC12020, Vertical-Cavity Surface-Emitting Lasers XXVI, PC1202005 (9 March 2022); https://doi.org/10.1117/12.2623587

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