Abstract
In this letter, we have fabricated the 1.3-μm Al0.20Ga 0.11In0.69As/Al0.30Ga0.26In 0.44As strain-compensated multiple-quantum-well laser diodes (LDs) with the GaInAsP and AlGaInAs graded-composition layers above the upper and below the lower cladding layers, respectively. This new LD structure exhibits a lower threshold current of 9 mA, a higher characteristic temperature of 80 K between 20 and 70°C, a little red-shift rate of 0.4 nm/°C and a higher relaxation frequency of 8.14 GHz at 80 mA and 20°C. Without coupling loss and damping factor, the 3 dB bandwidth of 13.1 GHz can be achieved. These characteristics are better than those LDs without the graded-composition layers.
| Original language | English |
|---|---|
| Pages (from-to) | L1507-L1508 |
| Journal | Japanese Journal of Applied Physics |
| Volume | 42 |
| Issue number | 12 B |
| DOIs | |
| State | Published - 15 12 2003 |
| Externally published | Yes |
Keywords
- AlGaInAs/InP
- Semiconductor lasers
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