研究目的
Investigating the performance of a high-power pulsed semiconductor laser operating in the eye-safe spectral range with an asymmetric waveguide structure.
研究成果
The experimental results demonstrate that a laser with an asymmetric waveguide design and a bulk active layer located near the p-OCL, operating in the eye-safe wavelength range in the pulsed regime, is comparable or superior in performance to lasers with a Quantum Well active layer and a narrow symmetric waveguide design. Further optimization of the structure is expected to improve performance.
研究不足
The study focuses on pulsed operation and does not address continuous-wave performance. The spectral control of the laser output for specific applications like LIDAR may require additional components.
1：Experimental Design and Method Selection:
The laser was designed with an asymmetric waveguide structure and a bulk active layer positioned very close to the p-cladding to eliminate current-induced nonuniform carrier accumulation.
2：Sample Selection and Data Sources:
The semiconductor structure was grown by metalorganic vapor phase epitaxy (MOVPE).
3：List of Experimental Equipment and Materials:
The laser diode was driven with current pulses generated by an Avtech AVOZ-A3-B laser diode driver. The output power values were obtained using a Thorlabs S132C germanium photodiode sensor.
4：Experimental Procedures and Operational Workflow:
The laser diode was characterized by measuring the output power and optical spectra at various current levels.
5：Data Analysis Methods:
The performance of the laser was simulated based on theoretical calculations and compared with experimental results.
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