Abstract
An optically pumped vertical-cavity surface-emitting laser with an electrically conducting n-type distributed Bragg reflector was achieved at 374.9 nm. An epitaxially grown 40-pair n-type AlGaN/GaN distributed Bragg reflector was used as the bottom mirror, while the top mirror was formed by a dielectric distributed Bragg reflector composed of seven pairs of HfO2/SiO2. A numerical simulation for the optical mode clearly demonstrated that a high confinement factor was achieved and the threshold pumping power density at room temperature was measured as 1.64 MW/cm2. The achieved optically pumped laser demonstrates the potential of utilizing an n-type distributed Bragg reflector for surface-emitting optical devices.
Original language | English (US) |
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Article number | 111002 |
Journal | Applied Physics Express |
Volume | 9 |
Issue number | 11 |
DOIs | |
State | Published - Nov 2016 |
ASJC Scopus subject areas
- General Engineering
- General Physics and Astronomy