Abstract
We report continuous-wave (CW) operation of an InAs/InGaAsP quantum-dot (QD) heterostructure laser diode (LD) with an output power of 1.1 W at room temperature. This is the first observation on the laser output over 1 W from InAs QD-LDs fabricated on InP substrates. Also, the high-power lasing emission was successfully achieved at up to 60 °C. The improvement in the lasing characteristics can be attributed to enhancement in modal gain of QD-LDs because of the increase in spatial carrier confinement around localized QD states by using a dot-in-a-well structure and a thin GaAs strain-modulating layer.
| Original language | English |
|---|---|
| Article number | 115815 |
| Journal | Laser Physics Letters |
| Volume | 11 |
| Issue number | 11 |
| DOIs | |
| State | Published - 2014.11.1 |
Keywords
- dot-in-a-well structure
- high-power laser diode
- InAs quantum dot
- strain-modulating layer
Quacquarelli Symonds(QS) Subject Topics
- Physics & Astronomy
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