Gain characteristics of gain-guided II–VI laser diodes
Yoshida, H. ; Gonno, Y. ; Nakano, K. ; Taniguchi, S. ; Hino, T. ; Ishibashi, A. ; Ikeda, M. ; Chuang, S. L. ; Hegarty, J.
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: |
We have studied the gain characteristics of gain-guided quantum well II–VI laser diodes by measuring the amplified spontaneous emission spectra under several pulsed conditions. The temperature rise during one current pulse affects the gain characteristics and the L-I characteristics. The net modal gain at constant peak current increases with the pulse width. The peak gain for long pulses shows a superlinear dependence on injection current. In this case, the L-I curve is very steep above threshold and sometimes shows an internal quantum efficiency of more than unity. This leads to an underestimation of the internal cavity loss giving a value inconsistent with the one obtained from the gain spectra. With short pulse currents (〈200 ns), the peak gain shows a weak sublinear dependence on injection current. The cavity losses obtained from the gain spectra and the L-I characteristics at short pulses are consistent. As a result, we obtain the intrinsic gain characteristics of gain-guided quantum well II–VI laser diodes. © 1996 American Institute of Physics.
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| Type of Medium: |
Electronic Resource
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| URL: |