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Single mode GaSb diode lasers for sensor applications in a long wavelength regime
Applied Optics
|November 2, 2017
Summary
New Gallium Antimonide (GaSb) laser diodes offer high power and single-mode emission for detecting important gases. These tunable lasers operate between 1.8 and 2.2 μm, overcoming limitations of Indium Phosphide (InP) lasers.
Area of Science:
- Optoelectronics
- Materials Science
- Spectroscopy
Background:
- The 1.8–3.5 μm wavelength range is crucial for detecting various gases in health, industry, and medicine.
- Indium Phosphide (InP) diode lasers show poor performance beyond approximately 2 μm, limiting applications in this spectral region.
Purpose of the Study:
- To develop tunable, high-power, single-mode laser diodes emitting in the 1.8–2.2 μm range.
- To address the limitations of existing laser technologies for sensitive gas detection.
Main Methods:
- Utilized the Gallium Antimonide (GaSb) material system for laser diode fabrication.
- Focused on achieving tunable, high-power, single-mode laser characteristics.
Main Results:
- Successfully developed GaSb-based laser diodes with emission in the 1.8–2.2 μm range.
- Demonstrated tunable, high-power, single-mode laser performance.
Conclusions:
- The developed GaSb laser diodes are suitable for sensitive gas detection in the 1.8–2.2 μm spectral region.
- These lasers overcome the performance limitations of InP lasers in this critical wavelength range.
