Dynamics of change of the laser heterostructure spectral characteristics under alternating strain caused by
surface acoustic wave is investigated. The study of spectral distribution of the laser radiation intensity has been also
fulfilled to reveal the interaction mechanisms in the studied structures. The interaction models are offered and the
theoretical analysis of the obtained experimental data has been carried out. Is shown, that mainly acousto-electron
interaction determines surface acoustic wave effect on spectral parameters of InGaAsP/InP laser radiation.
Modulator base don the amorphous Si-Te acousto-optic cell and operating in the mid-IR region has been manufactured and tested using 3.3 micrometers diode laser based on InGaAsSb/InAsSbP double heterostructure. Amplitude modulation efficiency for the laser beam coming from the end of a As2S3 fiber appeared to be not less than 70 percent, allowing to use the cell in optical gas sensor applications.
Modulator based on the amorphous Si-Te acousto-optic cell and operating in the mid-IR region has been manufactured and tested using 3.3 micrometer diode laser based on InGaAsSb/InAsSbP double heterostructure. Amplitude modulation efficiency for the laser beam coming from the end of a As2S3 fiber appeared to be not less than 70% allowing to use the cell in optical gas sensor applications. Methane gas fiber optic sensing was demonstrated using temperature tuning of the laser diode emission in the 3.28 - 3.34 micrometer range.
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