Intrinsic nonlinearity of the light–current characteristic of semiconductor lasers with a quantum-confined active region
- 16 September 2002
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 81 (12), 2154-2156
- https://doi.org/10.1063/1.1508171
Abstract
We describe a mechanism of nonlinearity of the light–current characteristic common to heterostructure lasers with a reduced-dimensionality active region. It arises from (i) noninstantaneous carrier capture into the active region and (ii) nonlinear (in the carrier density) recombination rate outside the active region. Because of (i), the carrier density outside the active region rises with injection current above threshold, and because of (ii), the useful fraction of current (that ends up as output light) decreases. We derive a universal closed-form expression for the internal differential quantum efficiency that holds true for quantum well, quantum wire, and quantum dot lasers.Keywords
This publication has 9 references indexed in Scilit:
- Tunneling-injection quantum-dot laser: ultrahigh temperature stabilityIEEE Journal of Quantum Electronics, 2001
- Longitudinal spatial hole burning in a quantum-dot laserIEEE Journal of Quantum Electronics, 2000
- Quantum-dot heterostructure lasersIEEE Journal of Selected Topics in Quantum Electronics, 2000
- The differential efficiency of quantum-well lasersIEEE Journal of Selected Topics in Quantum Electronics, 1997
- Inhomogeneous line broadening and the threshold current density of a semiconductor quantum dot laserSemiconductor Science and Technology, 1996
- Carrier capture time and its effect on the efficiency of quantum-well lasersIEEE Journal of Quantum Electronics, 1994
- Nonequilibrium effects in quantum well lasersApplied Physics Letters, 1992
- Estimation of carrier capture time of quantum-well lasers by spontaneous emission spectraApplied Physics Letters, 1992
- Multidimensional quantum well laser and temperature dependence of its threshold currentApplied Physics Letters, 1982