Low-dimensional [110]-orientated lead chalcogenides for mid-infrared lasers

Zhisheng Shi; Xiaoling Lu; Fanghai Zhao; Amitava Majumdar; Dewali Ray; Roopa Singh; Swathi Bondili; Donghui Li; Shikha Jain

doi:10.1117/12.579294

29 December 2004 Low-dimensional [110]-orientated lead chalcogenides for mid-infrared lasers

Zhisheng Shi, Xiaoling Lu, Fanghai Zhao, Amitava Majumdar, Dewali Ray, Roopa Singh, Swathi Bondili, Donghui Li, Shikha Jain

Author Affiliations +

Proceedings Volume 5593, Nanosensing: Materials and Devices; (2004) https://doi.org/10.1117/12.579294
Event: Optics East, 2004, Philadelphia, Pennsylvania, United States

Abstract

Low dimensional lead salt structure such as quantum-well (QW) structure is proposed for the fabrication of opto-electronic devices. Among [100], [111], and [110] orientations, [110]-orientated QW structure offers the highest gain. Theoretical simulations of [110] QW Pb-salt edge-emitting lasers show a 70-degree temperature increase in continuous-wave (CW) operation compared to the conventional [100]-orientated lasers. With modestly reduced Auger recombination of low dimensional material and with improved heat dissipation for laser structure, CW operation with about 10 mW output powers at room temperature for PbSe QW laser is predicted. PbSe epitaxial layer and PbSe/PbSrSe QW structures were, for the first time, successfully grown on [110]-orientated BaF₂ substrate by molecular-beam-epitaxy (MBE). The linewidth of the rocking curve from high-resolution x-ray diffraction (HRXRD) measurement for PbSe thin film is 60 arcsec, which indicates high crystalline quality. The dislocation density estimated by the rocking curve is 1.18x10⁷ cm^-2. 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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Zhisheng Shi, Xiaoling Lu, Fanghai Zhao, Amitava Majumdar, Dewali Ray, Roopa Singh, Swathi Bondili, Donghui Li, and Shikha Jain "Low-dimensional [110]-orientated lead chalcogenides for mid-infrared lasers", Proc. SPIE 5593, Nanosensing: Materials and Devices, (29 December 2004); https://doi.org/10.1117/12.579294

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KEYWORDS

Quantum wells

Lead

Thin films

Optical simulations

Silicon

Continuous wave operation

Semiconductor lasers

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