Aging properties of high power laser diode arrays analyzed by Fourier-transform photocurrent measurements

Aging properties of high power laser diode arrays analyzed by Fourier-transform photocurrent measurements

We present the results on aging mechanisms acting in high-power laser diode arrays (LDAs) employing Fourier-transform (FT) spectroscopy. The FT spectrometer was used as an excitation source for performing photocurrent (PC) measurements in two sets of aged LDA samples. The PC spectra reveal both the...

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Veröffentlicht in:Applied physics letters 1997-10, Vol.71 (16), p.2233-2235
Hauptverfasser: Tomm, J. W., Jaeger, A., Bärwolff, A., Elsaesser, T., Gerhardt, A., Donecker, J.
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container_end_page 2235
container_issue 16
container_start_page 2233
container_title Applied physics letters
container_volume 71
creator Tomm, J. W.
Jaeger, A.
Bärwolff, A.
Elsaesser, T.
Gerhardt, A.
Donecker, J.
description We present the results on aging mechanisms acting in high-power laser diode arrays (LDAs) employing Fourier-transform (FT) spectroscopy. The FT spectrometer was used as an excitation source for performing photocurrent (PC) measurements in two sets of aged LDA samples. The PC spectra reveal both the evolution of a defect band located in the optically active layer as well as modifications of the interband part of the spectrum upon aging. Such changes represent sensitive quantitative measures of the aging status and provide insight into the microscopic changes of the device structure upon aging.
doi_str_mv 10.1063/1.120066
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title Aging properties of high power laser diode arrays analyzed by Fourier-transform photocurrent measurements
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