Abstract
We have fabricated the first electrically-pumped vertical-cavity surface-emitting lasers (VCSEL's) which use oxide-based distributed Bragg reflectors (DBR's) on both sides of the gain region. They require a third the epitaxial growth time of VCSEL's with semiconductor DBR's. We obtain threshold currents as low as 160 μA in VCSEL's with an active area of 8 μm × 8 μm using a two quantum well InGaAs-GaAs active region. By etching away mirror pairs from the top reflector, quantum efficiencies as high as 61% are attained, while still maintaining a low threshold current of 290 μA.
| Original language | English |
|---|---|
| Pages (from-to) | 310-312 |
| Number of pages | 3 |
| Journal | IEEE Photonics Technology Letters |
| Volume | 8 |
| Issue number | 3 |
| DOIs | |
| State | Published - 1996.03 |
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