[110] Orientated lead salt midinfrared lasers

Shi, Z.; Lv, X.; Zhao, F.; Majumdar, A.; Ray, D.; Singh, R.; Yan, X. J.
October 2004
Applied Physics Letters;10/11/2004, Vol. 85 Issue 15, p2999
Academic Journal
A Lead salt midinfrared quantum-well (QW) laser on [110] orientation is proposed. Theoretical simulations of [110] QW edge-emitting lasers show a 70° temperature increase in continuous-wave operation compared to the conventional [100]-orientated lasers. This is because the gain on [100]-orientated QW structure is significantly increased. Among [100], [111], and [110] orientations, [110]-orientated QW structure offers the highest gain. PbSe/PbSrSe QW structures were successfully grown on [110]-orientated BaF2 substrate by molecular-beam-epitaxy (MBE). Photoluminescence intensity of [110]-orientated samples was twice as high as that on [111]-orientated BaF2 substrates from the same MBE run.


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