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Finite-Difference Time-Domain Simulation of Mid- and Far-Infrared Quantum Cascade Lasers

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Tamošiūnas V., Kancleris Ž., Dagys M., Simniškis R., Tamošsiūnienė M., Valušis G., Strasser G., Unterrainer K.

Acta Physica Polonica A

2005

vol. 107

issue 1

179-183

We present simulations of mid- and far-infrared quantum cascade lasers operating with/without external magnetic field. Maxwell-Bloch solver based on the finite-difference time-domain method was used in our investigation. Reduction of the far-infrared quantum cascade laser emission intensity is associated with increased optical losses in highly doped layers when magnetic field is changed from 4.2 T to 6.2 T. A simulated emission spectrum of mid-infrared disc-shaped quantum cascade laser with 60μm radius is consistent with the experimentally observed irregular spacing between quantum cascade laser emission lines.

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1 Acta Physica Polonica A

1 2005

1 Dagys M.

1 Kancleris Ž.

1 Simniškis R.

1 Strasser G.

1 Tamošiūnas V.

1 Tamošsiūnienė M.

1 Unterrainer K.

1 Valušis G.

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Finite-Difference Time-Domain Simulation of Mid- and Far-Infrared Quantum Cascade Lasers