Continuous wave blue lasing in III-nitride nanobeam cavity on silicon.
basic_science · Level V
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- Record sourced from PubMed, PMID 25584901.
- Also identified by DOI 10.1021/nl504432d.
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Abstract
III-V photonics on silicon is an active and promising research area. Here, we demonstrate room-temperature (RT) lasing in short-wavelength III-nitride photonic crystal nanobeam cavities grown on silicon featuring a single InGaN quantum well (QW). In the low-absorption QW region, high quality factors in excess of 10(4) are measured, while RT blue lasing under continuous-wave optical pumping is reported in the high-absorption wavelength range, hence the high QW gain region. Lasing characteristics are well accounted for by the large spontaneous emission coupling factor (β > 0.8) inherent to the nanobeam geometry and the large InGaN QW material gain. Our work illustrates the high potential of III-nitrides on silicon for the realization of low power nanophotonic devices with a reduced footprint that would be of prime interest for fundamental light-matter interaction studies and a variety of lab-on-a-chip applications including biophotonics.