Temperature dependence of the threshold current in gain-coupled distributed feedback lasers with periodically etched quantum wells: Mechanism for an appearance of infinite T0
Makino, T. ; Lu, H. ; Evans, J. D.
Woodbury, NY : American Institute of Physics (AIP)
Published 1996
Woodbury, NY : American Institute of Physics (AIP)
Published 1996
| ISSN: |
1077-3118
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|---|---|
| Source: |
AIP Digital Archive
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| Topics: |
Physics
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| Notes: |
A phenomenological model describing the temperature dependence of the threshold current of 1.3 μm gain-coupled distributed feedback (DFB) lasers with periodically etched strained-layer quantum wells is presented and compared to experimental results. The model can predict the minimum threshold current as a function of temperature (infinite T0), which has been observed experimentally. The mechanism for the appearance of this minimum is explained by the decrease of the detuning of the DFB-mode wavelength from the material gain-peak wavelength as the temperature increases. The condition for single-mode operation is also discussed with use of the effective gain of DFB laser structures. © 1996 American Institute of Physics.
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| Type of Medium: |
Electronic Resource
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| URL: |