Infrared photoluminescence spectra measurements using boxcar integrator in the active baseline subtraction mode

A photoluminescence (PL) measurement method using boxcar integration in the active baseline subtraction mode has been implemented. It allows for infrared PL measurements with a low duty cycle of the pump pulse, thereby minimizing the uncontrolled heating of the structure under study. The implemented...

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Bibliographic Details
Published in:Journal of physics. Conference series 2019-11, Vol.1400 (6), p.66035
Main Authors: Luferau, A I, Firsov, D D, Komkov, O S
Format: Article
Language:English
Subjects:
Boxcar integrators
Heating
Indium gallium arsenides
Infrared spectra
Measurement methods
Noise sensitivity
Photoluminescence
Physics
Signal to noise ratio
Subtraction
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Summary:A photoluminescence (PL) measurement method using boxcar integration in the active baseline subtraction mode has been implemented. It allows for infrared PL measurements with a low duty cycle of the pump pulse, thereby minimizing the uncontrolled heating of the structure under study. The implemented method was compared to phase-sensitive detection by signal-to-noise ratio of the resulting spectra, indicating its superior performance at low duty cycles. The decrease in uncontrolled heating of the structure under study was confirmed by observing a change in the ratio of temperature-sensitive PL peaks of a test InSb/InAs/InGaAs/InAlAs/GaAs nanoheterostructure.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1400/6/066035