Articles with "surface gratings" as a keyword



Theoretical study of Bragg reflection waveguide laser structures with surface gratings for spontaneous parametric down conversion

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Published in 2025 at "Physica Scripta"

DOI: 10.1088/1402-4896/adc347

Abstract: Bragg reflection waveguides (BRW) enable the generation of photon pairs in non-birefringent AlGaAs through spontaneous parametric down conversion (SPDC). Furthermore, the development of an electrically driven laser source from a passive BRW by introducing a… read more here.

Keywords: surface gratings; parametric conversion; bragg reflection; conversion ... See more keywords

Simulation analysis of high-order high-duty-cycle surface gratings.

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Published in 2022 at "Applied optics"

DOI: 10.1364/ao.469387

Abstract: High-order surface grating distributed feedback lasers are known to operate with a fundamental mode, narrow linewidth, high power, and high slope efficiency. The adoption of high-order surface gratings can avoid epitaxial re-growth necessary for the… read more here.

Keywords: high order; duty cycle; duty; surface gratings ... See more keywords

Optimized surface gratings for high-speed polarization switching in spin-VCSELs.

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Published in 2025 at "Optics express"

DOI: 10.1364/oe.565522

Abstract: Vertical-cavity surface-emitting lasers are limited to 30-50 GHz in conventional intensity modulation. Polarization modulation offers a promising alternative, exploiting birefringence-induced oscillations at much higher frequencies. We use rigorous coupled-wave analysis to design monolithic surface gratings that… read more here.

Keywords: spin vcsels; surface gratings; surface; optimized surface ... See more keywords