AI Article Synopsis
- A novel nonpolar GaN-based vertical-cavity surface-emitting laser (VCSEL) was developed featuring a nanoporous bottom distributed Bragg reflector (DBR) for improved performance at room temperature under continuous-wave (CW) optical pumping.! -
- The nanoporous design allows for the growth of high-reflectance DBRs while maintaining essential conductivity, crucial for the high efficiency of VCSELs.! -
- The laser operates at a wavelength of 462 nm with a low threshold power density of around 5 kW/cm and displays consistent emission polarization in the a-direction across various locations.!
Article Abstract
A nonpolar GaN-based vertical-cavity surface-emitting laser (VCSEL) using nanoporous bottom epitaxial distributed Bragg reflector (DBR) is demonstrated at room temperature (RT) under continuous-wave (CW) optical pumping. The porous layers enable the epitaxial growth of lattice-matched high-reflectance DBRs without sacrificing the conductive properties needed for high-performance VCSELs. The 2-λ cavity VCSEL reported here employs a hybrid design with top dielectric DBR and bottom nanoporous DBR. Single longitudinal mode lasing is observed at 462 nm with a threshold power density of ~5 kW/cm and a FWHM of ~0.12 nm. The emission polarization was pinned in the a-direction at all measured locations.
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| http://dx.doi.org/10.1364/OE.27.009495 | DOI Listing |
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View Article and Find Full Text PDFArticle Synopsis
- A novel nonpolar GaN-based vertical-cavity surface-emitting laser (VCSEL) was developed featuring a nanoporous bottom distributed Bragg reflector (DBR) for improved performance at room temperature under continuous-wave (CW) optical pumping.! -
- The nanoporous design allows for the growth of high-reflectance DBRs while maintaining essential conductivity, crucial for the high efficiency of VCSELs.! -
- The laser operates at a wavelength of 462 nm with a low threshold power density of around 5 kW/cm and displays consistent emission polarization in the a-direction across various locations.!
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