Abstract
The temporal coherence functions of InGaAs-GaAs quantum-dot (QD) and InAs-InGaAlAs quantum-dash (Qdash) superluminescent diodes (SLDs) and broadband laser diodes (BLDs) are reported. Using an optical fiber-based spectral interferometer, the fabricated devices were shown to yield low coherence lengths of 4.00-12.29 μm and 33.48-74.56 μm for SLD and BLD devices, respectively. In addition, there were negligible secondary coherencies indicating that these devices have the potential for use in low coherent interferometric systems.
Original language | English (US) |
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Pages (from-to) | 694-696 |
Number of pages | 3 |
Journal | IEEE Photonics Technology Letters |
Volume | 21 |
Issue number | 11 |
DOIs | |
State | Published - Jun 1 2009 |
Externally published | Yes |
Keywords
- Quantum-dash (Qdash)
- Quantum-dot (QD)
- Semiconductor laser
- Superluminescent diode (SLD)
- Temporal coherence
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Electrical and Electronic Engineering