Acousto-electron interaction in InGaAsP/InP laser heterostructures

Area of Science:

• Optoelectronics
• Semiconductor Physics
• Acoustics

Background:

• Heterolaser devices are crucial for optical communications.
• Understanding the impact of external stimuli like strain on laser performance is vital.
• Surface acoustic waves can influence semiconductor device characteristics.

Purpose of the Study:

• To investigate the frequency modulation of heterolaser radiation under ultrasonic strain.
• To analyze the dynamic and static changes in spectral parameters due to alternating strain.
• To determine the dominant interaction mechanism in strained InGaAsP/InP laser heterostructures.

Main Methods:

• Experimental measurement of heterolaser frequency modulation under ultrasonic strain.
• Dynamic and static spectral analysis of laser parameters.
• Theoretical modeling and analysis of experimental data.
• Investigation of acousto-electron interaction.

Main Results:

• Frequency modulation of heterolaser radiation by ultrasonic strain was observed.
• Significant dynamic and static changes in spectral parameters were identified.
• A theoretical model was developed and validated against experimental data.
• Acousto-electron interaction was confirmed as the dominant mechanism for surface waves.

Conclusions:

• Ultrasonic strain effectively modulates heterolaser radiation frequency.
• The developed model accurately describes the observed spectral parameter changes.
• Acousto-electron interaction plays a key role in the behavior of InGaAsP/InP lasers under surface wave action.