Kinetic influences on void formation in epitaxially regrown GaAs-Based PCSELs

McKenzie, Adam F.; Kyaw, Aye M.; Gerrard, Neil D.; MacLaren, Donald A.; Hogg, Richard A.

doi:10.1016/j.jcrysgro.2022.126969

Cited by 7 publications

(1 citation statement)

References 22 publications

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“…Thanks to the symmetry of the unit cell, the two orthogonal X directions are equivalent and two of the lowest energy modes with the lowest thresholds, of course, retain the same symmetry. The symmetry between two orthogonal X-directions can be broken, for instance, due to known difference between regrowth rates on two 110 crystalline directions terminated with either group III or group V atoms [10]. Figure 4 plots calculated band structure of the photonic crystal with modified shape of the air pocket (right triangle with one of the legs of shorter length) in two orthogonal X-directions.…”

Section: Characterization Results and Discussionmentioning

confidence: 99%

Continuous wave room temperature operation of the GaSb-based photonic crystal surface emitting diode lasers

Shterengas,

Lee,

Liu

et al. 2024

Novel in-Plane Semiconductor Lasers XXIII

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We report on the continuous wave (CW) room temperature operation of epitaxially regrown monolithic GaSb-based photonic crystal surface emitting diode lasers (PCSEL) with ≈ λ 2 µm. The devices are based on laser heterostructure containing carrier stopper layer designed to inhibit electron leakage into buried photonic-crystal section. Atomic hydrogen cleaning of the nanopatterned surface followed by optimized epitaxial step resulted in highly uniform air-pocket-retaining regrowth. The increase of the number of air-pockets in unit cells of the buried photonic crystal layer led to enhancement of the PCSEL output power and improvement of the far field pattern The PCSELs with buried high-index-contrast photonic crystal utilizing four air-pockets per unit cell generated 30 mW of continuous wave power from 200 µm diameter aperture.

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Section: Characterization Results and Discussionmentioning

confidence: 99%