Abstract
We investigate the possibility of interconduction band gain without global inversion by engineering the conduction band effective masses so that the upper lasing subband has an effective mass considerably smaller than the lower lasing subband that could not be obtained in conventional III-V materials. We recover the expected dispersive gain shape for similar masses and contrasting results if the effective masses characterizing the relevant subbands are very different.
Original language | British English |
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Article number | 061101 |
Journal | Applied Physics Letters |
Volume | 98 |
Issue number | 6 |
DOIs | |
State | Published - 7 Feb 2011 |