High-power quantum-dot superluminescent tapered diode under CW operation
Optics Express
|May 5, 2019
Summary
Researchers developed a high-power quantum-dot superluminescent diode. This device achieves record output power and spectral density for continuous-wave operation, enabling advanced spectroscopy and optical communication applications.
Area of Science:
- Optoelectronics
- Quantum Dot Technology
Background:
- Superluminescent diodes (SLEDs) are crucial light sources for various applications.
- Existing SLEDs often face limitations in output power and spectral characteristics.
Purpose of the Study:
- To demonstrate a high-power quantum-dot superluminescent diode (QD-SLED) under continuous-wave (CW) operation.
- To achieve record-breaking output power and power spectral density in the 1.1–1.3 μm spectral region.
Main Methods:
- Fabrication of a two-section contact QD-SLED.
- Characterization of the device under CW operation, measuring output power and spectral bandwidth.
Main Results:
- Achieved a record output power of 137.5 mW.
- Demonstrated a record power spectral density of 6.5 mW/nm.
- Reported a 6-fold increase in performance compared to existing CW-operated SLEDs.
- Showcased wide tunability with a maximum bandwidth of 79 nm at 1.4 mW output power.
Conclusions:
- The developed QD-SLED offers unprecedented high-power CW operation.
- The device's tunability makes it suitable for diverse applications, including spectroscopy, imaging, sensing, and optical communications.
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