Abstract
Microcavity laser design and performance optimization requires a quantitative knowledge of the cavity optical losses. A generalized method using sub-threshold spectral measurements matched to model calculations is demonstrated to determine optical loss in microcavity lasers. Cold-cavity spectral characteristics are used to extract the size-dependent optical loss for small diameter oxide-confined vertical-cavity surface emitting lasers. For oxide aperture diameters less than 4 μm, the oxide scattering loss can be greater than 10 cm-1, similar to the typical values of free carrier absorption loss.
Original language | English (US) |
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Article number | 101103 |
Journal | Applied Physics Letters |
Volume | 104 |
Issue number | 10 |
DOIs | |
State | Published - Mar 10 2014 |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)