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Photoinduced current generated by subband gap optical pumping for the investigation of deep levels in semiconductor lasers (2001)

Zhao, Z. ; Su, C. B.

[S.l.] : American Institute of Physics (AIP)

Journal of Applied Physics 89 (2001), S. 226-230

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ISSN: 1089-7550

Source: AIP Digital Archive

Topics: Physics

Notes: It is shown that the measurement of photocurrents induced by optical pumping at subband gap wavelengths may be a useful technique for studying deep-level traps in semiconductor lasers. In this experiment a 1.3 μm wavelength laser is used to probe a 0.78 μm wavelength GaAs laser device. The trap density of a predegraded and postdegraded device was measured. The measurement indicates a significant increase in the trap density for the degraded device over the nondegraded device. Rate equations describing this excitation process are given and are shown to describe the experiment very well. © 2001 American Institute of Physics.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.1327602

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