Fabrication and performance of blue GaN-based vertical-cavity surface emitting laser employing AlN∕GaN and Ta2O5∕SiO2 distributed Bragg reflector
GaN-based vertical-cavity surface emitting laser with 3 λ cavity and hybrid mirrors, consisting of the 25 pairs AlN∕GaN dielectric Bragg reflector and the 8 pairs Ta2O5∕SiO2, was fabricated. The laser action was achieved under the optical pumping at room temperature with a threshold pumping energy d...
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Veröffentlicht in: | Applied physics letters 2005-08, Vol.87 (8) |
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Hauptverfasser: | , , , , , , , , , , , |
Format: | Artikel |
Sprache: | eng |
Online-Zugang: | Volltext |
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Zusammenfassung: | GaN-based vertical-cavity surface emitting laser with 3 λ cavity and hybrid mirrors, consisting of the 25 pairs AlN∕GaN dielectric Bragg reflector and the 8 pairs Ta2O5∕SiO2, was fabricated. The laser action was achieved under the optical pumping at room temperature with a threshold pumping energy density of about 53mJ∕cm2. The laser emits 448 nm blue wavelength with a linewidth of 0.25 nm and the laser beam has a degree of polarization of about 84%. |
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ISSN: | 0003-6951 1077-3118 |
DOI: | 10.1063/1.2032598 |